v5.0.1

fix(ziptools,gziptools): Use fflate synchronous APIs for ZIP and GZIP operations for Deno compatibility; add TEntryFilter type and small docs/tests cleanup
v5.0.0
2025-11-25 13:37:27 +00:00 · 2025-11-25 13:37:27 +00:00 · 2025-11-25 12:32:13 +00:00 · 2025-11-25 12:32:13 +00:00 · 2025-11-25 11:59:11 +00:00 · 2025-11-25 11:59:11 +00:00
33 changed files with 16594 additions and 4210 deletions
--- a/.gitea/workflows/default_nottags.yaml
+++ b/.gitea/workflows/default_nottags.yaml
@@ -6,8 +6,8 @@ on:
      - '**'

 env:
-  IMAGE: registry.gitlab.com/hosttoday/ht-docker-node:npmci
-  NPMCI_COMPUTED_REPOURL: https://${{gitea.repository_owner}}:${{secrets.GITEA_TOKEN}}@gitea.lossless.digital/${{gitea.repository}}.git
+  IMAGE: code.foss.global/host.today/ht-docker-node:npmci
+  NPMCI_COMPUTED_REPOURL: https://${{gitea.repository_owner}}:${{secrets.GITEA_TOKEN}}@/${{gitea.repository}}.git
  NPMCI_TOKEN_NPM: ${{secrets.NPMCI_TOKEN_NPM}}
  NPMCI_TOKEN_NPM2: ${{secrets.NPMCI_TOKEN_NPM2}}
  NPMCI_GIT_GITHUBTOKEN: ${{secrets.NPMCI_GIT_GITHUBTOKEN}}
@@ -26,7 +26,7 @@ jobs:
      - name: Install pnpm and npmci
        run: |
          pnpm install -g pnpm
-          pnpm install -g @shipzone/npmci
+          pnpm install -g @ship.zone/npmci

      - name: Run npm prepare
        run: npmci npm prepare
--- a/.gitea/workflows/default_tags.yaml
+++ b/.gitea/workflows/default_tags.yaml
@@ -6,8 +6,8 @@ on:
      - '*'

 env:
-  IMAGE: registry.gitlab.com/hosttoday/ht-docker-node:npmci
-  NPMCI_COMPUTED_REPOURL: https://${{gitea.repository_owner}}:${{secrets.GITEA_TOKEN}}@gitea.lossless.digital/${{gitea.repository}}.git
+  IMAGE: code.foss.global/host.today/ht-docker-node:npmci
+  NPMCI_COMPUTED_REPOURL: https://${{gitea.repository_owner}}:${{secrets.GITEA_TOKEN}}@/${{gitea.repository}}.git
  NPMCI_TOKEN_NPM: ${{secrets.NPMCI_TOKEN_NPM}}
  NPMCI_TOKEN_NPM2: ${{secrets.NPMCI_TOKEN_NPM2}}
  NPMCI_GIT_GITHUBTOKEN: ${{secrets.NPMCI_GIT_GITHUBTOKEN}}
@@ -26,7 +26,7 @@ jobs:
      - name: Prepare
        run: |
          pnpm install -g pnpm
-          pnpm install -g @shipzone/npmci
+          pnpm install -g @ship.zone/npmci
          npmci npm prepare

      - name: Audit production dependencies
@@ -54,7 +54,7 @@ jobs:
      - name: Prepare
        run: |
          pnpm install -g pnpm
-          pnpm install -g @shipzone/npmci
+          pnpm install -g @ship.zone/npmci
          npmci npm prepare

      - name: Test stable
@@ -82,7 +82,7 @@ jobs:
      - name: Prepare
        run: |
          pnpm install -g pnpm
-          pnpm install -g @shipzone/npmci
+          pnpm install -g @ship.zone/npmci
          npmci npm prepare

      - name: Release
@@ -104,7 +104,7 @@ jobs:
      - name: Prepare
        run: |
          pnpm install -g pnpm
-          pnpm install -g @shipzone/npmci
+          pnpm install -g @ship.zone/npmci
          npmci npm prepare

      - name: Code quality
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,6 @@
 # artifacts
 coverage/
 public/
-pages/

 # installs
 node_modules/
@@ -17,4 +16,8 @@ node_modules/
 dist/
 dist_*/

-# custom
+# AI
+.claude/
+.serena/
+
+#------# custom
--- a/changelog.md
+++ b/changelog.md
@@ -0,0 +1,145 @@
+# Changelog
+
+## 2025-11-25 - 5.0.1 - fix(ziptools,gziptools)
+Use fflate synchronous APIs for ZIP and GZIP operations for Deno compatibility; add TEntryFilter type and small docs/tests cleanup
+
+- Replace fflate async APIs (zip, unzip, gzip, gunzip with callbacks) with synchronous counterparts (zipSync, unzipSync, gzipSync, gunzipSync) to avoid Web Worker issues in Deno
+- ZipCompressionStream.finalize now uses fflate.zipSync and emits compressed Buffer synchronously
+- GzipTools.compress / decompress now delegate to compressSync / decompressSync for cross-runtime compatibility
+- ZipTools.createZip and ZipTools.extractZip now use zipSync/unzipSync and return Buffers
+- Add TEntryFilter type to ts/interfaces.ts for fluent API entry filtering
+- Minor readme.hints.md updates and small whitespace tidy in tests
+
+## 2025-11-25 - 5.0.0 - BREAKING CHANGE(SmartArchive)
+Refactor public API: rename factory/extraction methods, introduce typed interfaces and improved compression tools
+
+- Renamed SmartArchive factory methods: fromArchiveUrl -> fromUrl, fromArchiveFile -> fromFile, fromArchiveStream -> fromStream; added fromBuffer helper.
+- Renamed extraction APIs: exportToFs -> extractToDirectory and exportToStreamOfStreamFiles -> extractToStream; stream-based helpers updated accordingly.
+- Export surface reorganized (ts/index.ts): core interfaces and errors are exported and new modules (bzip2tools, archiveanalyzer) are publicly available.
+- Introduced strong TypeScript types (ts/interfaces.ts) and centralized error types (ts/errors.ts) including Bzip2Error and BZIP2_ERROR_CODES.
+- Refactored format implementations and stream transforms: GzipTools/GzipCompressionTransform/GzipDecompressionTransform, ZipTools (ZipCompressionStream, ZipDecompressionTransform), TarTools improvements.
+- BZIP2 implementation improvements: new bit iterator (IBitReader), clearer error handling and streaming unbzip2 transform.
+- Updated tests to use the new APIs and method names.
+- Breaking change: public API method names and some class/transform names have changed — this requires code updates for consumers.
+
+## 2025-11-25 - 4.2.4 - fix(plugins)
+Migrate filesystem usage to Node fs/fsPromises and upgrade smartfile to v13; add listFileTree helper and update tests
+
+- Bumped dependency @push.rocks/smartfile to ^13.0.0 and removed unused dependency `through`
+- Replaced usages of smartfile.fs and smartfile.fsStream with Node native fs and fs/promises (createReadStream/createWriteStream, mkdir({recursive:true}), stat, readFile)
+- Added plugins.listFileTree helper (recursive directory lister) and used it in TarTools.packDirectory and tests
+- Updated SmartArchive.exportToFs to use plugins.fs and plugins.fsPromises for directory creation and file writes
+- Updated TarTools to use plugins.fs.createReadStream and plugins.fsPromises.stat when packing directories
+- Converted/updated tests to a Node/Deno-friendly test file (test.node+deno.ts) and switched test helpers to use fsPromises
+- Added readme.hints.md with migration notes for Smartfile v13 and architecture/dependency notes
+
+## 2025-11-25 - 4.2.3 - fix(build)
+Upgrade dev tooling: bump @git.zone/tsbuild, @git.zone/tsrun and @git.zone/tstest versions
+
+- Bump @git.zone/tsbuild from ^2.6.6 to ^3.1.0
+- Bump @git.zone/tsrun from ^1.3.3 to ^2.0.0
+- Bump @git.zone/tstest from ^2.3.4 to ^3.1.3
+
+## 2025-08-18 - 4.2.2 - fix(smartarchive)
+Improve tar entry streaming handling and add in-memory gzip/tgz tests
+
+- Fix tar entry handling: properly consume directory entries (resume stream) and wait for entry end before continuing to next header
+- Wrap tar file entries with a PassThrough so extracted StreamFile instances can be consumed while the tar extractor continues
+- Handle nested archives correctly by piping resultStream -> decompressionStream -> analyzer -> unpacker, avoiding premature end signals
+- Add and expand tests in test/test.gzip.ts: verify package.json and TS/license files after extraction, add in-memory gzip extraction test, and add real tgz-in-memory download+extraction test
+- Minor logging improvements for tar extraction flow
+
+## 2025-08-18 - 4.2.1 - fix(gzip)
+Improve gzip streaming decompression, archive analysis and unpacking; add gzip tests
+
+- Add a streaming DecompressGunzipTransform using fflate.Gunzip with proper _flush handling to support chunked gzip input and avoid buffering issues.
+- Refactor ArchiveAnalyzer: introduce IAnalyzedResult, getAnalyzedStream(), and getDecompressionStream() to better detect mime types and wire appropriate decompression streams (gzip, zip, bzip2, tar).
+- Use SmartRequest response streams converted via stream.Readable.fromWeb for URL sources in SmartArchive.getArchiveStream() to improve remote archive handling.
+- Improve nested archive unpacking and SmartArchive export pipeline: more robust tar/zip handling, consistent SmartDuplex usage and backpressure handling.
+- Enhance exportToFs: ensure directories, improved logging for relative paths, and safer write-stream wiring.
+- Add comprehensive gzip-focused tests (test/test.gzip.ts) covering file extraction, stream extraction, header filename handling, large files, and a real-world tgz-from-URL extraction scenario.
+
+## 2025-08-18 - 4.2.0 - feat(classes.smartarchive)
+Support URL streams, recursive archive unpacking and filesystem export; improve ZIP/GZIP/BZIP2 robustness; CI and package metadata updates
+
+- Add exportToFs(targetDir, fileName?) to write extracted StreamFile objects to the filesystem (ensures directories, logs relative paths, waits for write completion).
+- Implement exportToStreamOfStreamFiles with recursive unpacking pipeline that handles application/x-tar (tar-stream Extract), application/zip (fflate Unzip), nested archives and StreamIntake for StreamFile results.
+- Enhance getArchiveStream() to support URL/web streams (SmartRequest) and return Node Readable streams for remote archives.
+- Make ZIP decompression more robust: accept ArrayBuffer-like chunks, coerce to Buffer before pushing to fflate.Unzip, and ensure SmartDuplex handling of results.
+- Fixes and improvements to bzip2/gzip/tar tool implementations (various bug/formatting fixes, safer CRC and stream handling).
+- Update CI workflows to use new registry image and adjust npmci install path; minor .gitignore additions.
+- Package metadata tweaks: bugs URL and homepage updated, packageManager/pnpm fields adjusted.
+- Documentation/readme expanded and polished with quick start, examples and API reference updates.
+- Small test and plugin export cleanups (formatting and trailing commas removed/added).
+- TypeScript/formatting fixes across many files (consistent casing, trailing commas, typings, tsconfig additions).
+
+## 2025-08-18 - 4.1.0 - feat(classes.smartarchive)
+
+Support URL web streams, add recursive archive unpacking and filesystem export, and improve ZIP decompression robustness
+
+- ts/classes.smartarchive.ts: add exportToFs(targetDir, fileName?) to write extracted StreamFile objects to the filesystem (ensures directories, logs relative paths, waits for write completion).
+- ts/classes.smartarchive.ts: implement exportToStreamOfStreamFiles with recursive unpacking pipeline that handles application/x-tar (tar-stream Extract), application/zip (fflate unzip), nested archives and StreamIntake for StreamFile results.
+- ts/classes.smartarchive.ts: improve getArchiveStream() for URL sources by using SmartRequest.create().url(...).get() and converting the returned Web stream into a Node Readable stream.
+- ts/classes.ziptools.ts: make ZIP decompression writeFunction more robust — accept non-Buffer chunks, coerce to Buffer before pushing to fflate.Unzip, and loosen the writeFunction typing to handle incoming ArrayBuffer-like data.
+
+## 2024-10-13 - 4.0.39 - fix(core)
+
+Fix dependencies and update documentation.
+
+- Ensure package uses the latest dependencies
+- Reviewed and grouped imports in TypeScript files
+- Updated readme with advanced usage examples
+
+## 2024-10-13 - 4.0.38 - fix(dependencies)
+
+Update dependencies to latest versions
+
+- Updated @push.rocks/smartfile to version 11.0.21
+- Updated @push.rocks/smartpromise to version 4.0.4
+- Updated @push.rocks/smartstream to version 3.0.46
+- Updated @push.rocks/smarturl to version 3.1.0
+- Updated file-type to version 19.5.0
+- Updated @git.zone/tsbuild to version 2.1.84
+- Updated @git.zone/tsrun to version 1.2.49
+- Updated @push.rocks/tapbundle to version 5.3.0
+
+## 2024-06-08 - 4.0.24 to 4.0.37 - Fixes and Updates
+
+Core updates and bug fixes were implemented in versions 4.0.24 through 4.0.37.
+
+- Repeated core updates and fixes applied consistently across multiple versions.
+
+## 2024-06-06 - 4.0.22 to 4.0.23 - Descriptions and Fixes Updates
+
+Efforts to update documentation and core features.
+
+- "update description" in 4.0.22
+- Updates to `tsconfig` and `npmextra.json` were performed.
+- Ongoing core fixes.
+
+## 2023-11-06 - 4.0.0 - Major Update with Breaking Changes
+
+Introduction of significant updates and breaking changes.
+
+- Transition to new version 4.0.0 with core updates.
+- Break in compatibility due to major structural changes with core functionalities.
+
+## 2023-07-11 - 3.0.6 - Organizational Changes
+
+Structural reorganization and updates to the organization schema.
+
+- Switch to new organizational schema implemented.
+
+## 2022-04-04 - 3.0.0 - Build Updates and Breaking Changes
+
+Major build update introducing breaking changes.
+
+- Introduction of ESM structure with breaking changes.
+
+## 2016-01-18 - 0.0.0 to 1.0.0 - Initial Development and Launch
+
+Initial software development and establishment of core features.
+
+- Project set-up including Travis CI integration.
+- Launch of the first full version with code restructuring.
+- Added callback support.
--- a/deno.lock
+++ b/deno.lock
--- a/dist_ts/index.d.ts
+++ b/dist_ts/index.d.ts
@@ -1 +1,8 @@
+export * from './interfaces.js';
+export * from './errors.js';
 export * from './classes.smartarchive.js';
+export * from './classes.tartools.js';
+export * from './classes.ziptools.js';
+export * from './classes.gziptools.js';
+export * from './classes.bzip2tools.js';
+export * from './classes.archiveanalyzer.js';
--- a/dist_ts/index.js
+++ b/dist_ts/index.js
@@ -1,2 +1,13 @@
+// Core types and errors
+export * from './interfaces.js';
+export * from './errors.js';
+// Main archive class
 export * from './classes.smartarchive.js';
-//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiaW5kZXguanMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyIuLi90cy9pbmRleC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSxjQUFjLDJCQUEyQixDQUFDIn0=
+// Format-specific tools
+export * from './classes.tartools.js';
+export * from './classes.ziptools.js';
+export * from './classes.gziptools.js';
+export * from './classes.bzip2tools.js';
+// Archive analysis
+export * from './classes.archiveanalyzer.js';
+//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiaW5kZXguanMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyIuLi90cy9pbmRleC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSx3QkFBd0I7QUFDeEIsY0FBYyxpQkFBaUIsQ0FBQztBQUNoQyxjQUFjLGFBQWEsQ0FBQztBQUU1QixxQkFBcUI7QUFDckIsY0FBYywyQkFBMkIsQ0FBQztBQUUxQyx3QkFBd0I7QUFDeEIsY0FBYyx1QkFBdUIsQ0FBQztBQUN0QyxjQUFjLHVCQUF1QixDQUFDO0FBQ3RDLGNBQWMsd0JBQXdCLENBQUM7QUFDdkMsY0FBYyx5QkFBeUIsQ0FBQztBQUV4QyxtQkFBbUI7QUFDbkIsY0FBYyw4QkFBOEIsQ0FBQyJ9
--- a/npmextra.json
+++ b/npmextra.json
@@ -18,12 +18,16 @@
        "decompression",
        "zip",
        "tar",
+        "gzip",
        "bzip2",
-        "gzip"
+        "file extraction",
+        "file creation",
+        "data analysis",
+        "file stream"
      ]
    }
  },
  "tsdoc": {
    "legal": "\n## License and Legal Information\n\nThis repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository. \n\n**Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.\n\n### Trademarks\n\nThis project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH and are not included within the scope of the MIT license granted herein. Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines, and any usage must be approved in writing by Task Venture Capital GmbH.\n\n### Company Information\n\nTask Venture Capital GmbH  \nRegistered at District court Bremen HRB 35230 HB, Germany\n\nFor any legal inquiries or if you require further information, please contact us via email at hello@task.vc.\n\nBy using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.\n"
  }
-}
+}
--- a/package.json
+++ b/package.json
@@ -1,12 +1,12 @@
 {
  "name": "@push.rocks/smartarchive",
-  "version": "4.0.25",
+  "version": "5.0.1",
  "description": "A library for working with archive files, providing utilities for compressing and decompressing data.",
  "main": "dist_ts/index.js",
  "typings": "dist_ts/index.d.ts",
  "type": "module",
  "scripts": {
-    "test": "(tstest test/ --web)",
+    "test": "(tstest test/ --verbose)",
    "build": "tsbuild  --web --allowimplicitany",
    "buildDocs": "tsdoc"
  },
@@ -17,30 +17,28 @@
  "author": "Lossless GmbH",
  "license": "MIT",
  "bugs": {
-    "url": "https://github.com/pushrocks/smartarchive/issues"
+    "url": "https://code.foss.global/push.rocks/smartarchive/issues"
  },
-  "homepage": "https://code.foss.global/push.rocks/smartarchive",
+  "homepage": "https://code.foss.global/push.rocks/smartarchive#readme",
  "dependencies": {
    "@push.rocks/smartdelay": "^3.0.5",
-    "@push.rocks/smartfile": "^11.0.20",
-    "@push.rocks/smartpath": "^5.0.18",
-    "@push.rocks/smartpromise": "^4.0.3",
-    "@push.rocks/smartrequest": "^2.0.22",
-    "@push.rocks/smartrx": "^3.0.7",
-    "@push.rocks/smartstream": "^3.0.44",
+    "@push.rocks/smartfile": "^13.0.0",
+    "@push.rocks/smartpath": "^6.0.0",
+    "@push.rocks/smartpromise": "^4.2.3",
+    "@push.rocks/smartrequest": "^4.2.2",
+    "@push.rocks/smartrx": "^3.0.10",
+    "@push.rocks/smartstream": "^3.2.5",
    "@push.rocks/smartunique": "^3.0.9",
-    "@push.rocks/smarturl": "^3.0.7",
-    "@types/tar-stream": "^3.1.3",
+    "@push.rocks/smarturl": "^3.1.0",
+    "@types/tar-stream": "^3.1.4",
    "fflate": "^0.8.2",
-    "file-type": "^19.0.0",
-    "tar-stream": "^3.1.7",
-    "through": "^2.3.8"
+    "file-type": "^21.0.0",
+    "tar-stream": "^3.1.7"
  },
  "devDependencies": {
-    "@git.zone/tsbuild": "^2.1.80",
-    "@git.zone/tsrun": "^1.2.44",
-    "@git.zone/tstest": "^1.0.90",
-    "@push.rocks/tapbundle": "^5.0.23"
+    "@git.zone/tsbuild": "^3.1.0",
+    "@git.zone/tsrun": "^2.0.0",
+    "@git.zone/tstest": "^3.1.3"
  },
  "private": false,
  "files": [
@@ -64,7 +62,15 @@
    "decompression",
    "zip",
    "tar",
+    "gzip",
    "bzip2",
-    "gzip"
-  ]
+    "file extraction",
+    "file creation",
+    "data analysis",
+    "file stream"
+  ],
+  "packageManager": "pnpm@10.14.0+sha512.ad27a79641b49c3e481a16a805baa71817a04bbe06a38d17e60e2eaee83f6a146c6a688125f5792e48dd5ba30e7da52a5cda4c3992b9ccf333f9ce223af84748",
+  "pnpm": {
+    "overrides": {}
+  }
 }
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@@ -0,0 +1,4 @@
+onlyBuiltDependencies:
+  - esbuild
+  - mongodb-memory-server
+  - puppeteer
--- a/readme.hints.md
+++ b/readme.hints.md
@@ -1 +1,84 @@
- 
+# Smartarchive Development Hints
+
+## Architecture Overview
+
+`@push.rocks/smartarchive` uses a **fluent builder pattern** for all archive operations. The main entry point is `SmartArchive.create()` which returns a builder instance.
+
+### Two Operating Modes
+
+1. **Extraction Mode** - Triggered by `.url()`, `.file()`, `.stream()`, or `.buffer()`
+2. **Creation Mode** - Triggered by `.format()` or `.entry()`
+
+Modes are mutually exclusive - you cannot mix extraction and creation methods in the same chain.
+
+## Key Classes
+
+- **SmartArchive** - Main class with fluent API for all operations
+- **TarTools** - TAR-specific operations (pack/extract)
+- **ZipTools** - ZIP-specific operations using fflate
+- **GzipTools** - GZIP compression/decompression using fflate
+- **Bzip2Tools** - BZIP2 decompression (extract only, no creation)
+- **ArchiveAnalyzer** - Format detection via magic bytes
+
+## Dependencies
+
+- **fflate** - Pure JS compression for ZIP/GZIP (works in browser)
+- **tar-stream** - TAR archive handling
+- **file-type** - MIME type detection via magic bytes
+- **@push.rocks/smartfile** - SmartFile and StreamFile classes
+
+## API Changes (v5.0.0)
+
+The v5.0.0 release introduced a complete API refactor:
+
+### Old API (deprecated)
+```typescript
+// Old static factory methods - NO LONGER EXIST
+await SmartArchive.fromUrl(url);
+await SmartArchive.fromFile(path);
+await SmartArchive.fromDirectory(path, options);
+```
+
+### New Fluent API
+```typescript
+// Current fluent builder pattern
+await SmartArchive.create()
+  .url(url)
+  .extract(targetDir);
+
+await SmartArchive.create()
+  .format('tar.gz')
+  .directory(path)
+  .toFile(outputPath);
+```
+
+## Migration Notes (from v4.x)
+
+### Smartfile v13 Changes
+Smartfile v13 removed filesystem operations. Replacements:
+- `smartfile.fs.ensureDir(path)` → `fsPromises.mkdir(path, { recursive: true })`
+- `smartfile.fs.stat(path)` → `fsPromises.stat(path)`
+- `smartfile.fs.toReadStream(path)` → `fs.createReadStream(path)`
+
+### Still using from smartfile
+- `SmartFile` class (in-memory file representation)
+- `StreamFile` class (streaming file handling)
+
+## Testing
+
+```bash
+pnpm test              # Run all tests
+tstest test/test.node+deno.ts --verbose  # Run specific test
+```
+
+Tests use a Verdaccio registry URL (`verdaccio.lossless.digital`) for test archives.
+
+## Key Files
+
+- `ts/classes.smartarchive.ts` - Main SmartArchive class with fluent API
+- `ts/classes.tartools.ts` - TAR operations
+- `ts/classes.ziptools.ts` - ZIP operations
+- `ts/classes.gziptools.ts` - GZIP operations
+- `ts/classes.bzip2tools.ts` - BZIP2 decompression
+- `ts/classes.archiveanalyzer.ts` - Format detection
+- `ts/interfaces.ts` - Type definitions
--- a/readme.md
+++ b/readme.md
@@ -1,98 +1,530 @@
-# @push.rocks/smartarchive
-work with archives
+# @push.rocks/smartarchive 📦

-## Install
+A powerful, streaming-first archive manipulation library with a fluent builder API. Works seamlessly in Node.js and Deno.

-To install `@push.rocks/smartarchive`, you need to use npm or yarn. Run either of the following commands in your project directory:
+## Issue Reporting and Security

-```shell
-npm install @push.rocks/smartarchive --save
-```
+For reporting bugs, issues, or security vulnerabilities, please visit [community.foss.global/](https://community.foss.global/). This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a [code.foss.global/](https://code.foss.global/) account to submit Pull Requests directly.

-or if you prefer yarn:
+## Features 🚀

-```shell
+- 📁 **Multi-format support** – Handle `.zip`, `.tar`, `.tar.gz`, `.tgz`, `.gz`, and `.bz2` archives
+- 🌊 **Streaming-first architecture** – Process large archives without memory constraints
+- ✨ **Fluent builder API** – Chain methods for readable, expressive code
+- 🎯 **Smart detection** – Automatically identifies archive types via magic bytes
+- ⚡ **High performance** – Built on `tar-stream` and `fflate` for speed
+- 🔧 **Flexible I/O** – Work with files, URLs, streams, and buffers seamlessly
+- 🛠️ **Modern TypeScript** – Full type safety and excellent IDE support
+- 🔄 **Dual-mode operation** – Extract existing archives OR create new ones
+- 🦕 **Cross-runtime** – Works in both Node.js and Deno environments
+
+## Installation 📥
+
+```bash
+# Using pnpm (recommended)
+pnpm add @push.rocks/smartarchive
+
+# Using npm
+npm install @push.rocks/smartarchive
+
+# Using yarn
 yarn add @push.rocks/smartarchive
 ```

-This will add `@push.rocks/smartarchive` to your project's dependencies.
+## Quick Start 🎯

-## Usage
-
-`@push.rocks/smartarchive` is a powerful module designed to simplify the process of working with archive files such as zip, tar, gzip, and more. It provides an easy-to-use API for extracting, creating, and analyzing archives, making it an ideal choice for projects that require manipulation of archive files.
-
-### Getting Started
-
-First, import `SmartArchive` from `@push.rocks/smartarchive` using ESM syntax:
+### Extract an archive from URL

 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Extract a .tar.gz archive from a URL directly to the filesystem
+await SmartArchive.create()
+  .url('https://registry.npmjs.org/some-package/-/some-package-1.0.0.tgz')
+  .extract('./extracted');
 ```

-### Extracting Archive Files
-
-To extract an archive file, you can use `SmartArchive.fromArchiveUrl`, `SmartArchive.fromArchiveFile`, or `SmartArchive.fromArchiveStream` methods depending on the source of your archive. Here's an example of extracting an archive from a URL:
+### Create an archive from entries

 ```typescript
-async function extractArchiveFromURL() {
-  const url = 'https://example.com/archive.zip';
-  const targetDir = '/path/to/extract';
+import { SmartArchive } from '@push.rocks/smartarchive';

-  const archive = await SmartArchive.fromArchiveUrl(url);
-  await archive.exportToFs(targetDir);
+// Create a tar.gz archive with files
+await SmartArchive.create()
+  .format('tar.gz')
+  .compression(6)
+  .entry('config.json', JSON.stringify({ name: 'myapp' }))
+  .entry('readme.txt', 'Hello World!')
+  .toFile('./backup.tar.gz');
+```

-  console.log('Archive extracted successfully.');
+### Extract with filtering and path manipulation
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Extract only JSON files, stripping the first path component
+await SmartArchive.create()
+  .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz')
+  .stripComponents(1)           // Remove 'package/' prefix
+  .include(/\.json$/)           // Only extract JSON files
+  .extract('./node_modules/lodash');
+```
+
+## Core Concepts 💡
+
+### Fluent Builder Pattern
+
+`SmartArchive` uses a fluent builder pattern where you chain methods to configure the operation:
+
+```typescript
+SmartArchive.create()     // Start a new builder
+  .source(...)            // Configure source (extraction mode)
+  .options(...)           // Set options
+  .terminal()             // Execute the operation
+```
+
+### Two Operating Modes
+
+**Extraction Mode** - Load an existing archive and extract/analyze it:
+```typescript
+SmartArchive.create()
+  .url('...')        // or .file(), .stream(), .buffer()
+  .extract('./out')  // or .toSmartFiles(), .list(), etc.
+```
+
+**Creation Mode** - Build a new archive from entries:
+```typescript
+SmartArchive.create()
+  .format('tar.gz')  // Set output format
+  .entry(...)        // Add files
+  .toFile('./out.tar.gz')  // or .toBuffer(), .toStream()
+```
+
+> ⚠️ **Note:** You cannot mix extraction and creation methods in the same chain.
+
+## API Reference 📚
+
+### Source Methods (Extraction Mode)
+
+| Method | Description |
+|--------|-------------|
+| `.url(url)` | Load archive from a URL |
+| `.file(path)` | Load archive from local filesystem |
+| `.stream(readable)` | Load archive from any Node.js readable stream |
+| `.buffer(buffer)` | Load archive from an in-memory Buffer |
+
+### Creation Methods (Creation Mode)
+
+| Method | Description |
+|--------|-------------|
+| `.format(fmt)` | Set output format: `'tar'`, `'tar.gz'`, `'tgz'`, `'zip'`, `'gz'` |
+| `.compression(level)` | Set compression level (0-9, default: 6) |
+| `.entry(path, content)` | Add a file entry (string or Buffer content) |
+| `.entries(array)` | Add multiple entries at once |
+| `.directory(path, archiveBase?)` | Add entire directory contents |
+| `.addSmartFile(file, path?)` | Add a SmartFile instance |
+| `.addStreamFile(file, path?)` | Add a StreamFile instance |
+
+### Filter Methods (Both Modes)
+
+| Method | Description |
+|--------|-------------|
+| `.filter(predicate)` | Filter entries with custom function |
+| `.include(pattern)` | Only include entries matching regex/string pattern |
+| `.exclude(pattern)` | Exclude entries matching regex/string pattern |
+
+### Extraction Options
+
+| Method | Description |
+|--------|-------------|
+| `.stripComponents(n)` | Strip N leading path components |
+| `.overwrite(bool)` | Overwrite existing files (default: false) |
+| `.fileName(name)` | Set output filename for single-file archives (gz, bz2) |
+
+### Terminal Methods (Extraction)
+
+| Method | Returns | Description |
+|--------|---------|-------------|
+| `.extract(targetDir)` | `Promise<void>` | Extract to filesystem directory |
+| `.toStreamFiles()` | `Promise<StreamIntake<StreamFile>>` | Get stream of StreamFile objects |
+| `.toSmartFiles()` | `Promise<SmartFile[]>` | Get in-memory SmartFile array |
+| `.extractFile(path)` | `Promise<SmartFile \| null>` | Extract single file by path |
+| `.list()` | `Promise<IArchiveEntryInfo[]>` | List all entries |
+| `.analyze()` | `Promise<IArchiveInfo>` | Get archive metadata |
+| `.hasFile(path)` | `Promise<boolean>` | Check if file exists |
+
+### Terminal Methods (Creation)
+
+| Method | Returns | Description |
+|--------|---------|-------------|
+| `.build()` | `Promise<SmartArchive>` | Build the archive (implicit in other terminals) |
+| `.toBuffer()` | `Promise<Buffer>` | Get archive as Buffer |
+| `.toFile(path)` | `Promise<void>` | Write archive to disk |
+| `.toStream()` | `Promise<Readable>` | Get raw archive stream |
+
+## Usage Examples 🔨
+
+### Download and extract npm packages
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+const pkg = await SmartArchive.create()
+  .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz');
+
+// Quick inspection of package.json
+const pkgJson = await pkg.extractFile('package/package.json');
+if (pkgJson) {
+  const metadata = JSON.parse(pkgJson.contents.toString());
+  console.log(`Package: ${metadata.name}@${metadata.version}`);
+}
+
+// Full extraction with path normalization
+await SmartArchive.create()
+  .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz')
+  .stripComponents(1)
+  .extract('./node_modules/lodash');
+```
+
+### Create ZIP archive
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+await SmartArchive.create()
+  .format('zip')
+  .compression(9)
+  .entry('report.txt', 'Monthly sales report...')
+  .entry('data/figures.json', JSON.stringify({ revenue: 10000 }))
+  .entry('images/logo.png', pngBuffer)
+  .toFile('./report-bundle.zip');
+```
+
+### Create TAR.GZ from directory
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+await SmartArchive.create()
+  .format('tar.gz')
+  .compression(9)
+  .directory('./src', 'source')  // Archive ./src as 'source/' in archive
+  .toFile('./project-backup.tar.gz');
+```
+
+### Stream-based extraction
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+const fileStream = await SmartArchive.create()
+  .file('./large-archive.tar.gz')
+  .toStreamFiles();
+
+fileStream.on('data', async (streamFile) => {
+  console.log(`Processing: ${streamFile.relativeFilePath}`);
+
+  if (streamFile.relativeFilePath.endsWith('.json')) {
+    const content = await streamFile.getContentAsBuffer();
+    const data = JSON.parse(content.toString());
+    // Process JSON data...
+  }
+});
+
+fileStream.on('end', () => {
+  console.log('Extraction complete');
+});
+```
+
+### Filter specific file types
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Extract only TypeScript files
+const tsFiles = await SmartArchive.create()
+  .url('https://example.com/project.tar.gz')
+  .include(/\.ts$/)
+  .exclude(/node_modules/)
+  .toSmartFiles();
+
+for (const file of tsFiles) {
+  console.log(`${file.relative}: ${file.contents.length} bytes`);
 }
 ```

-### Creating Archive Files
-
-Creating archive files such as zip or tar.gz is straightforward with `smartarchive`. At the moment, you'll prepare the contents programmatically and then compress them. Detailed support for creating archives will be covered in future updates.
-
-### Analyzing Archive Files
-
-Analyzing the content of archives without extracting them can be useful in various scenarios, such as when you need to inspect the archive's content before deciding to extract it. Here's how you might analyze an archive:
+### Analyze archive without extraction

 ```typescript
-async function analyzeArchive() {
-  const url = 'https://example.com/archive.zip';
-  
-  const archive = await SmartArchive.fromArchiveUrl(url);
-  const analysisResult = await archive.analyzeContent();
-  
-  console.log(analysisResult); // Outputs details about the archive content
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+const archive = SmartArchive.create()
+  .file('./unknown-archive.tar.gz');
+
+// Get format info
+const info = await archive.analyze();
+console.log(`Format: ${info.format}`);
+console.log(`Compressed: ${info.isCompressed}`);
+
+// List contents
+const entries = await archive.list();
+for (const entry of entries) {
+  console.log(`${entry.path} (${entry.isDirectory ? 'dir' : 'file'})`);
+}
+
+// Check for specific file
+if (await archive.hasFile('package.json')) {
+  const pkgFile = await archive.extractFile('package.json');
+  console.log(pkgFile?.contents.toString());
 }
 ```

-Note: Replace `analyzeContent` with the appropriate method calls as per your implementation or update, as `smartarchive` provides foundational classes and methods for interaction with archive files but does not directly implement an `analyzeContent` method by default.
-
-### Stream Operations
-
-`smartarchive` offers streaming operations, allowing you to work with large archives efficiently. Here's an example of using streams to extract an archive:
+### Working with GZIP files

 ```typescript
-import { createReadStream, createWriteStream } from 'fs';
+import { SmartArchive, GzipTools } from '@push.rocks/smartarchive';

-async function extractArchiveUsingStream() {
-  const archiveStream = createReadStream('/path/to/archive.zip');
-  const archive = await SmartArchive.fromArchiveStream(archiveStream);
-  const extractionStream = await archive.exportToStreamOfStreamFiles();
-  
-  extractionStream.pipe(createWriteStream('/path/to/destination'));
+// Decompress a .gz file
+await SmartArchive.create()
+  .file('./data.json.gz')
+  .fileName('data.json')  // Specify output name (gzip doesn't store filename)
+  .extract('./decompressed');
+
+// Use GzipTools directly for compression/decompression
+const gzipTools = new GzipTools();
+
+// Compress a buffer
+const compressed = await gzipTools.compress(Buffer.from('Hello World'), 9);
+const decompressed = await gzipTools.decompress(compressed);
+
+// Synchronous operations
+const compressedSync = gzipTools.compressSync(inputBuffer, 6);
+const decompressedSync = gzipTools.decompressSync(compressedSync);
+
+// Streaming
+const compressStream = gzipTools.getCompressionStream(6);
+const decompressStream = gzipTools.getDecompressionStream();
+
+createReadStream('./input.txt')
+  .pipe(compressStream)
+  .pipe(createWriteStream('./output.gz'));
+```
+
+### Working with TAR archives directly
+
+```typescript
+import { TarTools } from '@push.rocks/smartarchive';
+
+const tarTools = new TarTools();
+
+// Create a TAR archive manually
+const pack = await tarTools.getPackStream();
+
+await tarTools.addFileToPack(pack, {
+  fileName: 'hello.txt',
+  content: 'Hello, World!'
+});
+
+await tarTools.addFileToPack(pack, {
+  fileName: 'data.json',
+  content: Buffer.from(JSON.stringify({ foo: 'bar' }))
+});
+
+pack.finalize();
+pack.pipe(createWriteStream('./output.tar'));
+
+// Pack a directory to TAR.GZ buffer
+const tgzBuffer = await tarTools.packDirectoryToTarGz('./src', 6);
+
+// Pack a directory to TAR.GZ stream
+const tgzStream = await tarTools.packDirectoryToTarGzStream('./src');
+```
+
+### Working with ZIP archives directly
+
+```typescript
+import { ZipTools } from '@push.rocks/smartarchive';
+
+const zipTools = new ZipTools();
+
+// Create a ZIP archive from entries
+const zipBuffer = await zipTools.createZip([
+  { archivePath: 'readme.txt', content: 'Hello!' },
+  { archivePath: 'data.bin', content: Buffer.from([0x00, 0x01, 0x02]) }
+], 6);
+
+// Extract a ZIP buffer
+const entries = await zipTools.extractZip(zipBuffer);
+for (const entry of entries) {
+  console.log(`${entry.path}: ${entry.content.length} bytes`);
 }
 ```

-### Conclusion
+### In-memory round-trip

-`@push.rocks/smartarchive` simplifies the process of working with various archive formats in JavaScript and TypeScript projects. By providing an easy-to-use API for common archive operations, it enables developers to integrate archive manipulation features into their applications efficiently.
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';

-Remember, the examples provided here are to give you a starting point. Depending on your specific use case, you may need to adjust these examples to fit your project's requirements. Always refer to the latest documentation for the most current information and methods available in `@push.rocks/smartarchive`.
+// Create archive in memory
+const archive = await SmartArchive.create()
+  .format('tar.gz')
+  .entry('config.json', JSON.stringify({ version: '1.0.0' }))
+  .build();

-For more information and API references, check the official [`@push.rocks/smartarchive` GitHub repository](https://github.com/pushrocks/smartarchive).
+const buffer = await archive.toBuffer();
+
+// Extract from buffer
+const files = await SmartArchive.create()
+  .buffer(buffer)
+  .toSmartFiles();
+
+for (const file of files) {
+  console.log(`${file.relative}: ${file.contents.toString()}`);
+}
+```
+
+## Real-World Use Cases 🌍
+
+### CI/CD: Download & Extract Build Artifacts
+
+```typescript
+const artifacts = await SmartArchive.create()
+  .url(`${CI_SERVER}/artifacts/build-${BUILD_ID}.zip`)
+  .stripComponents(1)
+  .extract('./dist');
+```
+
+### Backup System
+
+```typescript
+// Create backup
+await SmartArchive.create()
+  .format('tar.gz')
+  .compression(9)
+  .directory('./data')
+  .toFile(`./backups/backup-${Date.now()}.tar.gz`);
+
+// Restore backup
+await SmartArchive.create()
+  .file('./backups/backup-latest.tar.gz')
+  .extract('/restore/location');
+```
+
+### Bundle files for HTTP download
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Express/Fastify handler
+app.get('/download-bundle', async (req, res) => {
+  const buffer = await SmartArchive.create()
+    .format('zip')
+    .entry('report.pdf', pdfBuffer)
+    .entry('data.xlsx', excelBuffer)
+    .entry('images/chart.png', chartBuffer)
+    .toBuffer();
+
+  res.setHeader('Content-Type', 'application/zip');
+  res.setHeader('Content-Disposition', 'attachment; filename=report-bundle.zip');
+  res.send(buffer);
+});
+```
+
+### Data Pipeline: Process Compressed Datasets
+
+```typescript
+const fileStream = await SmartArchive.create()
+  .url('https://data.source/dataset.tar.gz')
+  .toStreamFiles();
+
+fileStream.on('data', async (file) => {
+  if (file.relativeFilePath.endsWith('.csv')) {
+    const content = await file.getContentAsBuffer();
+    // Stream CSV processing...
+  }
+});
+```
+
+## Supported Formats 📋
+
+| Format | Extension(s) | Extract | Create |
+|--------|--------------|---------|--------|
+| TAR | `.tar` | ✅ | ✅ |
+| TAR.GZ / TGZ | `.tar.gz`, `.tgz` | ✅ | ✅ |
+| ZIP | `.zip` | ✅ | ✅ |
+| GZIP | `.gz` | ✅ | ✅ |
+| BZIP2 | `.bz2` | ✅ | ❌ |
+
+## Type Definitions
+
+```typescript
+// Supported archive formats
+type TArchiveFormat = 'tar' | 'tar.gz' | 'tgz' | 'zip' | 'gz' | 'bz2';
+
+// Compression level (0 = none, 9 = maximum)
+type TCompressionLevel = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
+
+// Entry for creating archives
+interface IArchiveEntry {
+  archivePath: string;
+  content: string | Buffer | Readable | SmartFile | StreamFile;
+  size?: number;
+  mode?: number;
+  mtime?: Date;
+}
+
+// Information about an archive entry
+interface IArchiveEntryInfo {
+  path: string;
+  size: number;
+  isDirectory: boolean;
+  isFile: boolean;
+  mtime?: Date;
+  mode?: number;
+}
+
+// Archive analysis result
+interface IArchiveInfo {
+  format: TArchiveFormat | null;
+  isCompressed: boolean;
+  isArchive: boolean;
+  entries?: IArchiveEntryInfo[];
+}
+```
+
+## Performance Tips 🏎️
+
+1. **Use streaming for large files** – `.toStreamFiles()` processes entries one at a time without loading the entire archive
+2. **Provide byte lengths when known** – When using TarTools directly, provide `byteLength` for better performance
+3. **Choose appropriate compression** – Use 1-3 for speed, 6 (default) for balance, 9 for maximum compression
+4. **Filter early** – Use `.include()`/`.exclude()` to skip unwanted entries before processing
+
+## Error Handling 🛡️
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+try {
+  await SmartArchive.create()
+    .url('https://example.com/file.zip')
+    .extract('./output');
+} catch (error) {
+  if (error.message.includes('No source configured')) {
+    console.error('Forgot to specify source');
+  } else if (error.message.includes('No format specified')) {
+    console.error('Forgot to set format for creation');
+  } else if (error.message.includes('extraction mode')) {
+    console.error('Cannot mix extraction and creation methods');
+  } else {
+    console.error('Archive operation failed:', error.message);
+  }
+}
+```

 ## License and Legal Information

-This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository. 
+This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository.

 **Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.

@@ -100,9 +532,13 @@ This repository contains open-source code that is licensed under the MIT License

 This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH and are not included within the scope of the MIT license granted herein. Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines, and any usage must be approved in writing by Task Venture Capital GmbH.

+### Issue Reporting and Security
+
+For reporting bugs, issues, or security vulnerabilities, please visit [community.foss.global/](https://community.foss.global/). This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a [code.foss.global/](https://code.foss.global/) account to submit Pull Requests directly.
+
 ### Company Information

-Task Venture Capital GmbH  
+Task Venture Capital GmbH
 Registered at District court Bremen HRB 35230 HB, Germany

 For any legal inquiries or if you require further information, please contact us via email at hello@task.vc.
--- a/test/plugins.ts
+++ b/test/plugins.ts
@@ -1,13 +1,33 @@
-import * as path from 'path';
+import * as path from 'node:path';
+import * as fs from 'node:fs';
+import * as fsPromises from 'node:fs/promises';
 import * as smartpath from '@push.rocks/smartpath';
 import * as smartfile from '@push.rocks/smartfile';
 import * as smartrequest from '@push.rocks/smartrequest';
 import * as smartstream from '@push.rocks/smartstream';

-export {
-  path,
-  smartpath,
-  smartfile,
-  smartrequest,
-  smartstream,
+export { path, fs, fsPromises, smartpath, smartfile, smartrequest, smartstream };
+
+/**
+ * List files in a directory recursively, returning relative paths
+ */
+export async function listFileTree(dirPath: string, _pattern: string = '**/*'): Promise<string[]> {
+  const results: string[] = [];
+
+  async function walkDir(currentPath: string, relativePath: string = '') {
+    const entries = await fsPromises.readdir(currentPath, { withFileTypes: true });
+    for (const entry of entries) {
+      const entryRelPath = relativePath ? path.join(relativePath, entry.name) : entry.name;
+      const entryFullPath = path.join(currentPath, entry.name);
+
+      if (entry.isDirectory()) {
+        await walkDir(entryFullPath, entryRelPath);
+      } else if (entry.isFile()) {
+        results.push(entryRelPath);
+      }
+    }
+  }
+
+  await walkDir(dirPath);
+  return results;
 }
--- a/test/test.gzip.node+deno.ts
+++ b/test/test.gzip.node+deno.ts
@@ -0,0 +1,382 @@
+import { tap, expect } from '@git.zone/tstest/tapbundle';
+import * as plugins from './plugins.js';
+import * as smartarchive from '../ts/index.js';
+
+const testPaths = {
+  nogitDir: plugins.path.join(
+    plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
+    '../.nogit/',
+  ),
+  gzipTestDir: plugins.path.join(
+    plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
+    '../.nogit/gzip-test',
+  ),
+};
+
+tap.preTask('should prepare test directories', async () => {
+  await plugins.fsPromises.mkdir(testPaths.gzipTestDir, { recursive: true });
+});
+
+tap.test('should create and extract a gzip file', async () => {
+  // Create test data
+  const testContent = 'This is a test file for gzip compression and decompression.\n'.repeat(100);
+  const testFileName = 'test-file.txt';
+  const gzipFileName = 'test-file.txt.gz';
+
+  // Write the original file
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.gzipTestDir, testFileName),
+    testContent
+  );
+
+  // Create gzip compressed version using fflate directly
+  const fflate = await import('fflate');
+  const compressed = fflate.gzipSync(Buffer.from(testContent));
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName),
+    Buffer.from(compressed)
+  );
+
+  // Now test extraction using SmartArchive fluent API
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'extracted');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .file(plugins.path.join(testPaths.gzipTestDir, gzipFileName))
+    .fileName('test-file.txt')
+    .extract(extractPath);
+
+  // Read the extracted file
+  const extractedContent = await plugins.fsPromises.readFile(
+    plugins.path.join(extractPath, 'test-file.txt'),
+    'utf8'
+  );
+
+  // Verify the content matches
+  expect(extractedContent).toEqual(testContent);
+});
+
+tap.test('should handle gzip stream extraction', async () => {
+  // Create test data
+  const testContent = 'Stream test data for gzip\n'.repeat(50);
+  const gzipFileName = 'stream-test.txt.gz';
+
+  // Create gzip compressed version
+  const fflate = await import('fflate');
+  const compressed = fflate.gzipSync(Buffer.from(testContent));
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName),
+    Buffer.from(compressed)
+  );
+
+  // Create a read stream for the gzip file
+  const gzipStream = plugins.fs.createReadStream(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName)
+  );
+
+  // Test extraction using SmartArchive from stream with fluent API
+  const streamFiles: any[] = [];
+  const resultStream = await smartarchive.SmartArchive.create()
+    .stream(gzipStream)
+    .toStreamFiles();
+
+  await new Promise<void>((resolve, reject) => {
+    resultStream.on('data', (streamFile) => {
+      streamFiles.push(streamFile);
+    });
+    resultStream.on('end', resolve);
+    resultStream.on('error', reject);
+  });
+
+  // Verify we got the expected file
+  expect(streamFiles.length).toBeGreaterThan(0);
+
+  // Read content from the stream file
+  if (streamFiles[0]) {
+    const chunks: Buffer[] = [];
+    const readStream = await streamFiles[0].createReadStream();
+    await new Promise<void>((resolve, reject) => {
+      readStream.on('data', (chunk: Buffer) => chunks.push(chunk));
+      readStream.on('end', resolve);
+      readStream.on('error', reject);
+    });
+
+    const extractedContent = Buffer.concat(chunks).toString();
+    expect(extractedContent).toEqual(testContent);
+  }
+});
+
+tap.test('should handle gzip files with original filename in header', async () => {
+  // Test with a real-world gzip file that includes filename in header
+  const testContent = 'File with name in gzip header\n'.repeat(30);
+  const gzipFileName = 'compressed.gz';
+
+  // Create a proper gzip with filename header using Node's zlib
+  const zlib = await import('node:zlib');
+  const gzipBuffer = await new Promise<Buffer>((resolve, reject) => {
+    zlib.gzip(Buffer.from(testContent), {
+      level: 9,
+    }, (err, result) => {
+      if (err) reject(err);
+      else resolve(result);
+    });
+  });
+
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName),
+    gzipBuffer
+  );
+
+  // Test extraction with fluent API
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'header-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .file(plugins.path.join(testPaths.gzipTestDir, gzipFileName))
+    .fileName('compressed.txt')
+    .extract(extractPath);
+
+  // Check if file was extracted (name might be derived from archive name)
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  expect(files.length).toBeGreaterThan(0);
+
+  // Read and verify content
+  const extractedFile = files[0];
+  const extractedContent = await plugins.fsPromises.readFile(
+    plugins.path.join(extractPath, extractedFile || 'compressed.txt'),
+    'utf8'
+  );
+  expect(extractedContent).toEqual(testContent);
+});
+
+tap.test('should handle large gzip files', async () => {
+  // Create a larger test file
+  const largeContent = 'x'.repeat(1024 * 1024); // 1MB of 'x' characters
+  const gzipFileName = 'large-file.txt.gz';
+
+  // Compress the large file
+  const fflate = await import('fflate');
+  const compressed = fflate.gzipSync(Buffer.from(largeContent));
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName),
+    Buffer.from(compressed)
+  );
+
+  // Test extraction with fluent API
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'large-extracted');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .file(plugins.path.join(testPaths.gzipTestDir, gzipFileName))
+    .fileName('large-file.txt')
+    .extract(extractPath);
+
+  // Verify the extracted content
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  expect(files.length).toBeGreaterThan(0);
+
+  const extractedContent = await plugins.fsPromises.readFile(
+    plugins.path.join(extractPath, files[0] || 'large-file.txt'),
+    'utf8'
+  );
+  expect(extractedContent.length).toEqual(largeContent.length);
+  expect(extractedContent).toEqual(largeContent);
+});
+
+tap.test('should handle real-world multi-chunk gzip from URL', async () => {
+  // Test with a real tgz file that will be processed in multiple chunks
+  const testUrl = 'https://registry.npmjs.org/@push.rocks/smartfile/-/smartfile-11.2.7.tgz';
+
+  // Download and extract the archive with fluent API
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'real-world-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .url(testUrl)
+    .extract(extractPath);
+
+  // Verify extraction worked
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  expect(files.length).toBeGreaterThan(0);
+
+  // Check for expected package structure
+  const hasPackageJson = files.some(f => f.includes('package.json'));
+  expect(hasPackageJson).toBeTrue();
+
+  // Read and verify package.json content
+  const packageJsonPath = files.find(f => f.includes('package.json'));
+  if (packageJsonPath) {
+    const packageJsonContent = await plugins.fsPromises.readFile(
+      plugins.path.join(extractPath, packageJsonPath),
+      'utf8'
+    );
+    const packageJson = JSON.parse(packageJsonContent);
+    expect(packageJson.name).toEqual('@push.rocks/smartfile');
+    expect(packageJson.version).toEqual('11.2.7');
+  }
+
+  // Read and verify a TypeScript file
+  const tsFilePath = files.find(f => f.endsWith('.ts'));
+  if (tsFilePath) {
+    const tsFileContent = await plugins.fsPromises.readFile(
+      plugins.path.join(extractPath, tsFilePath),
+      'utf8'
+    );
+    // TypeScript files should have content
+    expect(tsFileContent.length).toBeGreaterThan(10);
+    console.log(`  ✓ TypeScript file ${tsFilePath} has ${tsFileContent.length} bytes`);
+  }
+
+  // Read and verify license file
+  const licensePath = files.find(f => f.includes('license'));
+  if (licensePath) {
+    const licenseContent = await plugins.fsPromises.readFile(
+      plugins.path.join(extractPath, licensePath),
+      'utf8'
+    );
+    expect(licenseContent).toContain('MIT');
+  }
+
+  // Verify we can read multiple files without corruption
+  const readableFiles = files.filter(f =>
+    f.endsWith('.json') || f.endsWith('.md') || f.endsWith('.ts') || f.endsWith('.js')
+  ).slice(0, 5); // Test first 5 readable files
+
+  for (const file of readableFiles) {
+    const content = await plugins.fsPromises.readFile(
+      plugins.path.join(extractPath, file),
+      'utf8'
+    );
+    expect(content).toBeDefined();
+    expect(content.length).toBeGreaterThan(0);
+    console.log(`  ✓ Successfully read ${file} (${content.length} bytes)`);
+  }
+});
+
+tap.test('should handle gzip extraction fully in memory', async () => {
+  // Create test data in memory
+  const testContent = 'This is test data for in-memory gzip processing\n'.repeat(100);
+
+  // Compress using fflate in memory
+  const fflate = await import('fflate');
+  const compressed = fflate.gzipSync(Buffer.from(testContent));
+
+  // Process through SmartArchive without touching filesystem using fluent API
+  const streamFiles: plugins.smartfile.StreamFile[] = [];
+  const resultStream = await smartarchive.SmartArchive.create()
+    .buffer(Buffer.from(compressed))
+    .toStreamFiles();
+
+  await new Promise<void>((resolve, reject) => {
+    resultStream.on('data', (streamFile: plugins.smartfile.StreamFile) => {
+      streamFiles.push(streamFile);
+    });
+    resultStream.on('end', resolve);
+    resultStream.on('error', reject);
+  });
+
+  // Verify we got a file
+  expect(streamFiles.length).toBeGreaterThan(0);
+
+  // Read the content from memory without filesystem
+  const firstFile = streamFiles[0];
+  const chunks: Buffer[] = [];
+  const readStream = await firstFile.createReadStream();
+
+  await new Promise<void>((resolve, reject) => {
+    readStream.on('data', (chunk: Buffer) => chunks.push(chunk));
+    readStream.on('end', resolve);
+    readStream.on('error', reject);
+  });
+
+  const extractedContent = Buffer.concat(chunks).toString();
+  expect(extractedContent).toEqual(testContent);
+  console.log(`  ✓ In-memory extraction successful (${extractedContent.length} bytes)`);
+});
+
+tap.test('should handle real tgz file fully in memory', async (tools) => {
+  await tools.timeout(10000); // Set 10 second timeout
+  // Download tgz file into memory
+  const response = await plugins.smartrequest.SmartRequest.create()
+    .url('https://registry.npmjs.org/@push.rocks/smartfile/-/smartfile-11.2.7.tgz')
+    .get();
+
+  const tgzBuffer = Buffer.from(await response.arrayBuffer());
+  console.log(`  Downloaded ${tgzBuffer.length} bytes into memory`);
+
+  // Process through SmartArchive in memory with fluent API
+  const streamFiles: plugins.smartfile.StreamFile[] = [];
+  const resultStream = await smartarchive.SmartArchive.create()
+    .buffer(tgzBuffer)
+    .toStreamFiles();
+
+  await new Promise<void>((resolve, reject) => {
+    let timeout: NodeJS.Timeout;
+
+    const cleanup = () => {
+      clearTimeout(timeout);
+    };
+
+    timeout = setTimeout(() => {
+      cleanup();
+      resolve(); // Resolve after timeout if stream doesn't end
+    }, 5000);
+
+    resultStream.on('data', (streamFile: plugins.smartfile.StreamFile) => {
+      streamFiles.push(streamFile);
+    });
+
+    resultStream.on('end', () => {
+      cleanup();
+      resolve();
+    });
+
+    resultStream.on('error', (err) => {
+      cleanup();
+      reject(err);
+    });
+  });
+
+  console.log(`  Extracted ${streamFiles.length} files in memory`);
+  // At minimum we should have extracted something
+  expect(streamFiles.length).toBeGreaterThan(0);
+
+  // Find and read package.json from memory
+  const packageJsonFile = streamFiles.find(f => f.relativeFilePath?.includes('package.json'));
+
+  if (packageJsonFile) {
+    const chunks: Buffer[] = [];
+    const readStream = await packageJsonFile.createReadStream();
+
+    await new Promise<void>((resolve, reject) => {
+      readStream.on('data', (chunk: Buffer) => chunks.push(chunk));
+      readStream.on('end', resolve);
+      readStream.on('error', reject);
+    });
+
+    const packageJsonContent = Buffer.concat(chunks).toString();
+    const packageJson = JSON.parse(packageJsonContent);
+    expect(packageJson.name).toEqual('@push.rocks/smartfile');
+    expect(packageJson.version).toEqual('11.2.7');
+    console.log(`  ✓ Read package.json from memory: ${packageJson.name}@${packageJson.version}`);
+  }
+
+  // Read a few more files to verify integrity
+  const filesToCheck = streamFiles.slice(0, 3);
+  for (const file of filesToCheck) {
+    const chunks: Buffer[] = [];
+    const readStream = await file.createReadStream();
+
+    await new Promise<void>((resolve, reject) => {
+      readStream.on('data', (chunk: Buffer) => chunks.push(chunk));
+      readStream.on('end', resolve);
+      readStream.on('error', reject);
+    });
+
+    const content = Buffer.concat(chunks);
+    expect(content.length).toBeGreaterThan(0);
+    console.log(`  ✓ Read ${file.relativeFilePath} from memory (${content.length} bytes)`);
+  }
+});
+
+export default tap.start();
--- a/test/test.node+deno.ts
+++ b/test/test.node+deno.ts
@@ -0,0 +1,240 @@
+import { tap, expect } from '@git.zone/tstest/tapbundle';
+
+import * as plugins from './plugins.js';
+
+const testPaths = {
+  nogitDir: plugins.path.join(
+    plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
+    '../.nogit/',
+  ),
+  remoteDir: plugins.path.join(
+    plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
+    '../.nogit/remote',
+  ),
+};
+
+import * as smartarchive from '../ts/index.js';
+
+tap.preTask('should prepare .nogit dir', async () => {
+  await plugins.fsPromises.mkdir(testPaths.remoteDir, { recursive: true });
+});
+
+tap.preTask('should prepare downloads', async (tools) => {
+  const response = await plugins.smartrequest.SmartRequest.create()
+    .url(
+      'https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz',
+    )
+    .get();
+  const downloadedFile: Buffer = Buffer.from(await response.arrayBuffer());
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.nogitDir, 'test.tgz'),
+    downloadedFile,
+  );
+});
+
+tap.test('should extract existing files on disk using fluent API', async () => {
+  await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .extract(testPaths.nogitDir);
+});
+
+tap.test('should extract from file using fluent API', async () => {
+  const extractPath = plugins.path.join(testPaths.nogitDir, 'from-file-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .file(plugins.path.join(testPaths.nogitDir, 'test.tgz'))
+    .extract(extractPath);
+
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  expect(files.length).toBeGreaterThan(0);
+});
+
+tap.test('should extract with stripComponents using fluent API', async () => {
+  const extractPath = plugins.path.join(testPaths.nogitDir, 'strip-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .stripComponents(1)
+    .extract(extractPath);
+
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  expect(files.length).toBeGreaterThan(0);
+  // Files should not have 'package/' prefix
+  const hasPackagePrefix = files.some(f => f.startsWith('package/'));
+  expect(hasPackagePrefix).toBeFalse();
+});
+
+tap.test('should extract with filter using fluent API', async () => {
+  const extractPath = plugins.path.join(testPaths.nogitDir, 'filter-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .filter(entry => entry.path.endsWith('.json'))
+    .extract(extractPath);
+
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  // All extracted files should be JSON
+  for (const file of files) {
+    expect(file.endsWith('.json')).toBeTrue();
+  }
+});
+
+tap.test('should list archive entries using fluent API', async () => {
+  const entries = await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .list();
+
+  expect(entries.length).toBeGreaterThan(0);
+  const hasPackageJson = entries.some(e => e.path.includes('package.json'));
+  expect(hasPackageJson).toBeTrue();
+});
+
+tap.test('should create archive using fluent API', async () => {
+  const archive = await smartarchive.SmartArchive.create()
+    .format('tar.gz')
+    .compression(9)
+    .entry('hello.txt', 'Hello World!')
+    .entry('config.json', JSON.stringify({ name: 'test', version: '1.0.0' }));
+
+  expect(archive).toBeInstanceOf(smartarchive.SmartArchive);
+
+  const buffer = await archive.toBuffer();
+  expect(buffer.length).toBeGreaterThan(0);
+});
+
+tap.test('should create and write archive to file using fluent API', async () => {
+  const outputPath = plugins.path.join(testPaths.nogitDir, 'created-archive.tar.gz');
+
+  await smartarchive.SmartArchive.create()
+    .format('tar.gz')
+    .entry('readme.txt', 'This is a test archive')
+    .entry('data/info.json', JSON.stringify({ created: new Date().toISOString() }))
+    .toFile(outputPath);
+
+  // Verify file was created
+  const stats = await plugins.fsPromises.stat(outputPath);
+  expect(stats.size).toBeGreaterThan(0);
+
+  // Verify we can extract it
+  const extractPath = plugins.path.join(testPaths.nogitDir, 'verify-created');
+  await smartarchive.SmartArchive.create()
+    .file(outputPath)
+    .extract(extractPath);
+
+  const files = await plugins.listFileTree(extractPath, '**/*');
+  expect(files).toContain('readme.txt');
+});
+
+tap.test('should create ZIP archive using fluent API', async () => {
+  const outputPath = plugins.path.join(testPaths.nogitDir, 'created-archive.zip');
+
+  await smartarchive.SmartArchive.create()
+    .format('zip')
+    .entry('file1.txt', 'Content 1')
+    .entry('file2.txt', 'Content 2')
+    .toFile(outputPath);
+
+  // Verify file was created
+  const stats = await plugins.fsPromises.stat(outputPath);
+  expect(stats.size).toBeGreaterThan(0);
+});
+
+tap.test('should extract to SmartFiles using fluent API', async () => {
+  const smartFiles = await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .toSmartFiles();
+
+  expect(smartFiles.length).toBeGreaterThan(0);
+
+  const packageJson = smartFiles.find(f => f.relative.includes('package.json'));
+  expect(packageJson).toBeDefined();
+});
+
+tap.test('should analyze archive using fluent API', async () => {
+  const info = await smartarchive.SmartArchive.create()
+    .file(plugins.path.join(testPaths.nogitDir, 'test.tgz'))
+    .analyze();
+
+  expect(info.isArchive).toBeTrue();
+  expect(info.isCompressed).toBeTrue();
+  expect(info.format).toEqual('gz');
+});
+
+tap.test('should check if file exists in archive using fluent API', async () => {
+  const hasPackageJson = await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .hasFile('package.json');
+
+  expect(hasPackageJson).toBeTrue();
+});
+
+tap.test('should extract single file using fluent API', async () => {
+  const packageJson = await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .extractFile('package.json');
+
+  expect(packageJson).toBeDefined();
+  expect(packageJson!.contents.toString()).toContain('websetup');
+});
+
+tap.test('should handle include/exclude patterns', async () => {
+  const smartFiles = await smartarchive.SmartArchive.create()
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
+    .include(/\.json$/)
+    .toSmartFiles();
+
+  expect(smartFiles.length).toBeGreaterThan(0);
+  for (const file of smartFiles) {
+    expect(file.relative.endsWith('.json')).toBeTrue();
+  }
+});
+
+tap.test('should throw error when mixing modes', async () => {
+  let threw = false;
+  try {
+    smartarchive.SmartArchive.create()
+      .url('https://example.com/archive.tgz')
+      .entry('file.txt', 'content'); // This should throw
+  } catch (e) {
+    threw = true;
+    expect((e as Error).message).toContain('extraction mode');
+  }
+  expect(threw).toBeTrue();
+});
+
+tap.test('should throw error when no source configured', async () => {
+  let threw = false;
+  try {
+    await smartarchive.SmartArchive.create().extract('./output');
+  } catch (e) {
+    threw = true;
+    expect((e as Error).message).toContain('No source configured');
+  }
+  expect(threw).toBeTrue();
+});
+
+tap.test('should throw error when no format configured', async () => {
+  let threw = false;
+  try {
+    await smartarchive.SmartArchive.create()
+      .entry('file.txt', 'content')
+      .toBuffer();
+  } catch (e) {
+    threw = true;
+    expect((e as Error).message).toContain('No format specified');
+  }
+  expect(threw).toBeTrue();
+});
+
+tap.skip.test('should extract a b2zip', async () => {
+  const dataUrl =
+    'https://daten.offeneregister.de/de_companies_ocdata.jsonl.bz2';
+  await smartarchive.SmartArchive.create()
+    .url(dataUrl)
+    .extract(plugins.path.join(testPaths.nogitDir, 'de_companies_ocdata.jsonl'));
+});
+
+export default tap.start();
--- a/test/test.ts
+++ b/test/test.ts
@@ -1,50 +0,0 @@
-import { tap, expect } from '@push.rocks/tapbundle';
-
-import * as plugins from './plugins.js';
-
-const testPaths = {
-  nogitDir: plugins.path.join(
-    plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
-    '../.nogit/'
-  ),
-  remoteDir: plugins.path.join(
-    plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
-    '../.nogit/remote'
-  ),
-};
-
-import * as smartarchive from '../ts/index.js';
-
-tap.preTask('should prepare .nogit dir', async () => {
-  await plugins.smartfile.fs.ensureDir(testPaths.remoteDir);
-});
-
-tap.preTask('should prepare downloads', async (tools) => {
-  const downloadedFile: Buffer = (
-    await plugins.smartrequest.getBinary(
-      'https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz'
-    )
-  ).body;
-  await plugins.smartfile.memory.toFs(
-    downloadedFile,
-    plugins.path.join(testPaths.nogitDir, 'test.tgz')
-  );
-});
-
-tap.test('should extract existing files on disk', async () => {
-  const testSmartarchive = await smartarchive.SmartArchive.fromArchiveUrl(
-    'https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz'
-  );
-  await testSmartarchive.exportToFs(testPaths.nogitDir);
-});
-
-tap.skip.test('should extract a b2zip', async () => {
-  const dataUrl = 'https://daten.offeneregister.de/de_companies_ocdata.jsonl.bz2';
-  const testArchive = await smartarchive.SmartArchive.fromArchiveUrl(dataUrl);
-    await testArchive.exportToFs(
-      plugins.path.join(testPaths.nogitDir, 'de_companies_ocdata.jsonl'),
-      'data.jsonl',
-    );
-})
-
-await tap.start();
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -1,8 +1,8 @@
 /**
- * autocreated commitinfo by @pushrocks/commitinfo
+ * autocreated commitinfo by @push.rocks/commitinfo
 */
 export const commitinfo = {
  name: '@push.rocks/smartarchive',
-  version: '4.0.25',
+  version: '5.0.1',
  description: 'A library for working with archive files, providing utilities for compressing and decompressing data.'
 }
--- a/ts/bzip2/bititerator.ts
+++ b/ts/bzip2/bititerator.ts
@@ -1,41 +1,60 @@
-var BITMASK = [0, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF];
+import type { IBitReader } from '../interfaces.js';

-// returns a function that reads bits.
-// takes a buffer iterator as input
-export function bitIterator(nextBuffer: () => Buffer) {
-    var bit = 0, byte = 0;
-    var bytes = nextBuffer();
-    var f = function(n) {
-        if (n === null && bit != 0) {  // align to byte boundary
-            bit = 0
-            byte++;
-            return;
-        }
-        var result = 0;
-        while(n > 0) {
-            if (byte >= bytes.length) {
-                byte = 0;
-                bytes = nextBuffer();
-            }
-            var left = 8 - bit;
-            if (bit === 0 && n > 0)
-                // @ts-ignore
-                f.bytesRead++;
-            if (n >= left) {
-                result <<= left;
-                result |= (BITMASK[left] & bytes[byte++]);
-                bit = 0;
-                n -= left;
-            } else {
-                result <<= n;
-                result |= ((bytes[byte] & (BITMASK[n] << (8 - n - bit))) >> (8 - n - bit));
-                bit += n;
-                n = 0;
-            }
-        }
-        return result;
-    };
-    // @ts-ignore
-    f.bytesRead = 0;
-    return f;
-};
+const BITMASK = [0, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff] as const;
+
+/**
+ * Creates a bit reader function for BZIP2 decompression.
+ * Takes a buffer iterator as input and returns a function that reads bits.
+ */
+export function bitIterator(nextBuffer: () => Buffer): IBitReader {
+  let bit = 0;
+  let byte = 0;
+  let bytes = nextBuffer();
+  let _bytesRead = 0;
+
+  const reader = function (n: number | null): number | void {
+    if (n === null && bit !== 0) {
+      // align to byte boundary
+      bit = 0;
+      byte++;
+      return;
+    }
+
+    let result = 0;
+    let remaining = n as number;
+
+    while (remaining > 0) {
+      if (byte >= bytes.length) {
+        byte = 0;
+        bytes = nextBuffer();
+      }
+
+      const left = 8 - bit;
+
+      if (bit === 0 && remaining > 0) {
+        _bytesRead++;
+      }
+
+      if (remaining >= left) {
+        result <<= left;
+        result |= BITMASK[left] & bytes[byte++];
+        bit = 0;
+        remaining -= left;
+      } else {
+        result <<= remaining;
+        result |= (bytes[byte] & (BITMASK[remaining] << (8 - remaining - bit))) >> (8 - remaining - bit);
+        bit += remaining;
+        remaining = 0;
+      }
+    }
+
+    return result;
+  } as IBitReader;
+
+  Object.defineProperty(reader, 'bytesRead', {
+    get: () => _bytesRead,
+    enumerable: true,
+  });
+
+  return reader;
+}
--- a/ts/bzip2/bzip2.ts
+++ b/ts/bzip2/bzip2.ts
@@ -1,335 +1,449 @@
-export class Bzip2Error extends Error {
-  public name: string = 'Bzip2Error';
-  public message: string;
-  public stack = (new Error()).stack;
+import { Bzip2Error, BZIP2_ERROR_CODES } from '../errors.js';
+import type { IBitReader, IHuffmanGroup } from '../interfaces.js';

-  constructor(messageArg: string) {
-    super();
-    this.message = messageArg;
-  }
+// Re-export Bzip2Error for backward compatibility
+export { Bzip2Error };
+
+/**
+ * Throw a BZIP2 error with proper error code
+ */
+function throwError(message: string, code: string = BZIP2_ERROR_CODES.INVALID_BLOCK_DATA): never {
+  throw new Bzip2Error(message, code);
 }

-var messageArg = {
-  Error: function(message) {throw new Bzip2Error(message);}
-};
-
+/**
+ * BZIP2 decompression implementation
+ */
 export class Bzip2 {
-  public Bzip2Error = Bzip2Error;
-  public crcTable =
-  [
-   0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,
-   0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
-   0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
-   0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
-   0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,
-   0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
-   0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,
-   0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
-   0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
-   0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
-   0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,
-   0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
-   0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,
-   0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
-   0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
-   0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
-   0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,
-   0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
-   0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
-   0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
-   0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
-   0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
-   0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,
-   0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
-   0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,
-   0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
-   0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
-   0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
-   0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
-   0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
-   0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,
-   0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
-   0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
-   0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
-   0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,
-   0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
-   0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,
-   0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
-   0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
-   0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
-   0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,
-   0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
-   0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,
-   0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
-   0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
-   0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
-   0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,
-   0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
-   0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
-   0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
-   0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
-   0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
-   0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,
-   0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
-   0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,
-   0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
-   0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
-   0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
-   0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
-   0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
-   0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,
-   0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
-   0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
-   0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
+  // CRC32 lookup table for BZIP2
+  public readonly crcTable: readonly number[] = [
+    0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
+    0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
+    0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
+    0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
+    0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
+    0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
+    0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
+    0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
+    0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
+    0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
+    0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
+    0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
+    0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
+    0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
+    0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
+    0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
+    0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
+    0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
+    0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
+    0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
+    0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
+    0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
+    0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
+    0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
+    0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
+    0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
+    0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
+    0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
+    0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
+    0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
+    0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
+    0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
+    0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
+    0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
+    0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
+    0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
+    0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
+    0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
+    0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
+    0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
+    0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
+    0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
+    0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4,
  ];

-  array = function(bytes) {
-    var bit = 0, byte = 0;
-    var BITMASK = [0, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF ];
-    return function(n) {
-        var result = 0;
-        while(n > 0) {
-            var left = 8 - bit;
-            if (n >= left) {
-                result <<= left;
-                result |= (BITMASK[left] & bytes[byte++]);
-                bit = 0;
-                n -= left;
-            } else {
-                result <<= n;
-                result |= ((bytes[byte] & (BITMASK[n] << (8 - n - bit))) >> (8 - n - bit));
-                bit += n;
-                n = 0;
-            }
+  // State arrays initialized in header()
+  private byteCount!: Int32Array;
+  private symToByte!: Uint8Array;
+  private mtfSymbol!: Int32Array;
+  private selectors!: Uint8Array;
+
+  /**
+   * Create a bit reader from a byte array
+   */
+  array(bytes: Uint8Array | Buffer): (n: number) => number {
+    let bit = 0;
+    let byte = 0;
+    const BITMASK = [0, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff];
+
+    return function (n: number): number {
+      let result = 0;
+      while (n > 0) {
+        const left = 8 - bit;
+        if (n >= left) {
+          result <<= left;
+          result |= BITMASK[left] & bytes[byte++];
+          bit = 0;
+          n -= left;
+        } else {
+          result <<= n;
+          result |= (bytes[byte] & (BITMASK[n] << (8 - n - bit))) >> (8 - n - bit);
+          bit += n;
+          n = 0;
        }
-        return result;
-    }
+      }
+      return result;
+    };
  }

-  simple = function(srcbuffer, stream) {
-    var bits = this.array(srcbuffer);
-    var size = this.header(bits);
-    var ret = false;
-    var bufsize = 100000 * size;
-    var buf = new Int32Array(bufsize);
-    
+  /**
+   * Simple decompression from a buffer
+   */
+  simple(srcbuffer: Uint8Array | Buffer, stream: (byte: number) => void): void {
+    const bits = this.array(srcbuffer);
+    const size = this.header(bits as IBitReader);
+    let ret: number | null = 0;
+    const bufsize = 100000 * size;
+    const buf = new Int32Array(bufsize);
+
    do {
-        ret = this.decompress(bits, stream, buf, bufsize);        
-    } while(!ret);
+      ret = this.decompress(bits as IBitReader, stream, buf, bufsize, ret);
+    } while (ret !== null);
  }

-  header = function(bits) {
+  /**
+   * Parse BZIP2 header and return block size
+   */
+  header(bits: IBitReader): number {
    this.byteCount = new Int32Array(256);
    this.symToByte = new Uint8Array(256);
    this.mtfSymbol = new Int32Array(256);
    this.selectors = new Uint8Array(0x8000);
-  
-    if (bits(8*3) != 4348520) messageArg.Error("No magic number found");
-  
-    var i = bits(8) - 48;
-    if (i < 1 || i > 9) messageArg.Error("Not a BZIP archive");
-    return i;
-  };

-  decompress = function(bits, stream, buf, bufsize, streamCRC) {
-    var MAX_HUFCODE_BITS = 20;
-    var MAX_SYMBOLS = 258;
-    var SYMBOL_RUNA = 0;
-    var SYMBOL_RUNB = 1;
-    var GROUP_SIZE = 50;
-    var crc = 0 ^ (-1);
-    
-    for(var h = '', i = 0; i < 6; i++) h += bits(8).toString(16);
-    if (h == "177245385090") {
-      var finalCRC = bits(32)|0;
-      if (finalCRC !== streamCRC) messageArg.Error("Error in bzip2: crc32 do not match");
-      // align stream to byte
+    if (bits(8 * 3) !== 4348520) {
+      throwError('No BZIP2 magic number found at start of stream', BZIP2_ERROR_CODES.NO_MAGIC_NUMBER);
+    }
+
+    const blockSize = (bits(8) as number) - 48;
+    if (blockSize < 1 || blockSize > 9) {
+      throwError('Invalid BZIP2 archive: block size must be 1-9', BZIP2_ERROR_CODES.INVALID_ARCHIVE);
+    }
+    return blockSize;
+  }
+
+  /**
+   * Decompress a BZIP2 block
+   */
+  decompress(
+    bits: IBitReader,
+    stream: (byte: number) => void,
+    buf: Int32Array,
+    bufsize: number,
+    streamCRC?: number | null
+  ): number | null {
+    const MAX_HUFCODE_BITS = 20;
+    const MAX_SYMBOLS = 258;
+    const SYMBOL_RUNA = 0;
+    const SYMBOL_RUNB = 1;
+    const GROUP_SIZE = 50;
+    let crc = 0 ^ -1;
+
+    // Read block header
+    let headerHex = '';
+    for (let i = 0; i < 6; i++) {
+      headerHex += (bits(8) as number).toString(16);
+    }
+
+    // Check for end-of-stream marker
+    if (headerHex === '177245385090') {
+      const finalCRC = bits(32) as number | 0;
+      if (finalCRC !== streamCRC) {
+        throwError('CRC32 mismatch: stream checksum verification failed', BZIP2_ERROR_CODES.CRC_MISMATCH);
+      }
+      // Align stream to byte boundary
      bits(null);
-      return null; // reset streamCRC for next call
+      return null;
    }
-    if (h != "314159265359") messageArg.Error("eek not valid bzip data");
-    var crcblock = bits(32)|0; // CRC code
-    if (bits(1)) messageArg.Error("unsupported obsolete version");
-    var origPtr = bits(24);
-    if (origPtr > bufsize) messageArg.Error("Initial position larger than buffer size");
-    var t = bits(16);
-    var symTotal = 0;
-    for (i = 0; i < 16; i++) {
-        if (t & (1 << (15 - i))) {
-            var k = bits(16);
-            for(j = 0; j < 16; j++) {
-                if (k & (1 << (15 - j))) {
-                    this.symToByte[symTotal++] = (16 * i) + j;
-                }
-            }
-        }
+
+    // Verify block signature (pi digits)
+    if (headerHex !== '314159265359') {
+      throwError('Invalid block header: expected pi signature (0x314159265359)', BZIP2_ERROR_CODES.INVALID_BLOCK_DATA);
    }
-  
-    var groupCount = bits(3);
-    if (groupCount < 2 || groupCount > 6) messageArg.Error("another error");
-    var nSelectors = bits(15);
-    if (nSelectors == 0) messageArg.Error("meh");
-    for(var i = 0; i < groupCount; i++) this.mtfSymbol[i] = i;
-  
-    for(var i = 0; i < nSelectors; i++) {
-        for(var j = 0; bits(1); j++) if (j >= groupCount) messageArg.Error("whoops another error");
-        var uc = this.mtfSymbol[j];
-        for(var k: any = j-1; k>=0; k--) {
-            this.mtfSymbol[k+1] = this.mtfSymbol[k];
-        }
-        this.mtfSymbol[0] = uc;
-        this.selectors[i] = uc;
+
+    const crcblock = bits(32) as number | 0;
+
+    if (bits(1)) {
+      throwError('Unsupported obsolete BZIP2 format version', BZIP2_ERROR_CODES.INVALID_ARCHIVE);
    }
-  
-    var symCount = symTotal + 2;
-    var groups = [];
-    var length = new Uint8Array(MAX_SYMBOLS),
-    temp = new Uint16Array(MAX_HUFCODE_BITS+1);
-  
-    var hufGroup;
-  
-    for(var j = 0; j < groupCount; j++) {
-        t = bits(5); //lengths
-        for(var i = 0; i < symCount; i++) {
-            while(true){
-                if (t < 1 || t > MAX_HUFCODE_BITS) messageArg.Error("I gave up a while ago on writing error messages");
-                if (!bits(1)) break;
-                if (!bits(1)) t++;
-                else t--;
-            }
-            length[i] = t;
-        }
-        var  minLen,  maxLen;
-        minLen = maxLen = length[0];
-        for(var i = 1; i < symCount; i++) {
-            if (length[i] > maxLen) maxLen = length[i];
-            else if (length[i] < minLen) minLen = length[i];
-        }
-        hufGroup = groups[j] = {};
-        hufGroup.permute = new Int32Array(MAX_SYMBOLS);
-        hufGroup.limit = new Int32Array(MAX_HUFCODE_BITS + 1);
-        hufGroup.base = new Int32Array(MAX_HUFCODE_BITS + 1);
-  
-        hufGroup.minLen = minLen;
-        hufGroup.maxLen = maxLen;
-        var base = hufGroup.base;
-        var limit = hufGroup.limit;
-        var pp = 0;
-        for(var i: number = minLen; i <= maxLen; i++)
-        for(var t: any = 0; t < symCount; t++)
-        if (length[t] == i) hufGroup.permute[pp++] = t;
-        for(i = minLen; i <= maxLen; i++) temp[i] = limit[i] = 0;
-        for(i = 0; i < symCount; i++) temp[length[i]]++;
-        pp = t = 0;
-        for(i = minLen; i < maxLen; i++) {
-            pp += temp[i];
-            limit[i] = pp - 1;
-            pp <<= 1;
-            base[i+1] = pp - (t += temp[i]);
-        }
-        limit[maxLen] = pp + temp[maxLen] - 1;
-        base[minLen] = 0;
+
+    const origPtr = bits(24) as number;
+    if (origPtr > bufsize) {
+      throwError('Initial position larger than buffer size', BZIP2_ERROR_CODES.BUFFER_OVERFLOW);
    }
-  
-    for(var i = 0; i < 256; i++) { 
-        this.mtfSymbol[i] = i;
-        this.byteCount[i] = 0;
+
+    // Read symbol map
+    let symbolMapBits = bits(16) as number;
+    let symTotal = 0;
+    for (let i = 0; i < 16; i++) {
+      if (symbolMapBits & (1 << (15 - i))) {
+        const subMap = bits(16) as number;
+        for (let j = 0; j < 16; j++) {
+          if (subMap & (1 << (15 - j))) {
+            this.symToByte[symTotal++] = 16 * i + j;
+          }
+        }
+      }
    }
-    var runPos, count, symCount: number, selector;
-    runPos = count = symCount = selector = 0;    
-    while(true) {
-        if (!(symCount--)) {
-            symCount = GROUP_SIZE - 1;
-            if (selector >= nSelectors) messageArg.Error("meow i'm a kitty, that's an error");
-            hufGroup = groups[this.selectors[selector++]];
-            base = hufGroup.base;
-            limit = hufGroup.limit;
-        }
-        i = hufGroup.minLen;
-        j = bits(i);
-        while(true) {
-            if (i > hufGroup.maxLen) messageArg.Error("rawr i'm a dinosaur");
-            if (j <= limit[i]) break;
-            i++;
-            j = (j << 1) | bits(1);
-        }
-        j -= base[i];
-        if (j < 0 || j >= MAX_SYMBOLS) messageArg.Error("moo i'm a cow");
-        var nextSym = hufGroup.permute[j];
-        if (nextSym == SYMBOL_RUNA || nextSym == SYMBOL_RUNB) {
-            if (!runPos){
-                runPos = 1;
-                t = 0;
-            }
-            if (nextSym == SYMBOL_RUNA) t += runPos;
-            else t += 2 * runPos;
-            runPos <<= 1;
-            continue;
-        }
-        if (runPos) {
-            runPos = 0;
-            if (count + t > bufsize) messageArg.Error("Boom.");
-            uc = this.symToByte[this.mtfSymbol[0]];
-            this.byteCount[uc] += t;
-            while(t--) buf[count++] = uc;
-        }
-        if (nextSym > symTotal) break;
-        if (count >= bufsize) messageArg.Error("I can't think of anything. Error");
-        i = nextSym - 1;
-        uc = this.mtfSymbol[i];
-        for(var k: any = i-1; k>=0; k--) {
-            this.mtfSymbol[k+1] = this.mtfSymbol[k];
-        }
-        this.mtfSymbol[0] = uc
-        uc = this.symToByte[uc];
-        this.byteCount[uc]++;
-        buf[count++] = uc;
+
+    // Read Huffman groups
+    const groupCount = bits(3) as number;
+    if (groupCount < 2 || groupCount > 6) {
+      throwError('Invalid group count: must be between 2 and 6', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
    }
-    if (origPtr < 0 || origPtr >= count) messageArg.Error("I'm a monkey and I'm throwing something at someone, namely you");
-    var j = 0;
-    for(var i = 0; i < 256; i++) {
-        k = j + this.byteCount[i];
-        this.byteCount[i] = j;
-        j = k;
+
+    const nSelectors = bits(15) as number;
+    if (nSelectors === 0) {
+      throwError('Invalid selector count: cannot be zero', BZIP2_ERROR_CODES.INVALID_SELECTOR);
    }
-    for(var i = 0; i < count; i++) {
-        uc = buf[i] & 0xff;
-        buf[this.byteCount[uc]] |= (i << 8);
-        this.byteCount[uc]++;
+
+    // Initialize MTF symbol array
+    for (let i = 0; i < groupCount; i++) {
+      this.mtfSymbol[i] = i;
    }
-    var pos = 0, current = 0, run = 0;
+
+    // Read selectors using MTF decoding
+    for (let i = 0; i < nSelectors; i++) {
+      let j = 0;
+      while (bits(1)) {
+        j++;
+        if (j >= groupCount) {
+          throwError('Invalid MTF index: exceeds group count', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
+        }
+      }
+      const uc = this.mtfSymbol[j];
+      for (let k = j - 1; k >= 0; k--) {
+        this.mtfSymbol[k + 1] = this.mtfSymbol[k];
+      }
+      this.mtfSymbol[0] = uc;
+      this.selectors[i] = uc;
+    }
+
+    // Build Huffman tables
+    const symCount = symTotal + 2;
+    const groups: IHuffmanGroup[] = [];
+    const length = new Uint8Array(MAX_SYMBOLS);
+    const temp = new Uint16Array(MAX_HUFCODE_BITS + 1);
+
+    for (let j = 0; j < groupCount; j++) {
+      let t = bits(5) as number;
+      for (let i = 0; i < symCount; i++) {
+        while (true) {
+          if (t < 1 || t > MAX_HUFCODE_BITS) {
+            throwError('Invalid Huffman code length: must be between 1 and 20', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
+          }
+          if (!bits(1)) break;
+          if (!bits(1)) t++;
+          else t--;
+        }
+        length[i] = t;
+      }
+
+      let minLen = length[0];
+      let maxLen = length[0];
+      for (let i = 1; i < symCount; i++) {
+        if (length[i] > maxLen) maxLen = length[i];
+        else if (length[i] < minLen) minLen = length[i];
+      }
+
+      const hufGroup: IHuffmanGroup = {
+        permute: new Int32Array(MAX_SYMBOLS),
+        limit: new Int32Array(MAX_HUFCODE_BITS + 1),
+        base: new Int32Array(MAX_HUFCODE_BITS + 1),
+        minLen,
+        maxLen,
+      };
+      groups[j] = hufGroup;
+
+      const base = hufGroup.base;
+      const limit = hufGroup.limit;
+
+      let pp = 0;
+      for (let i = minLen; i <= maxLen; i++) {
+        for (let t = 0; t < symCount; t++) {
+          if (length[t] === i) hufGroup.permute[pp++] = t;
+        }
+      }
+
+      for (let i = minLen; i <= maxLen; i++) {
+        temp[i] = 0;
+        limit[i] = 0;
+      }
+      for (let i = 0; i < symCount; i++) {
+        temp[length[i]]++;
+      }
+
+      pp = 0;
+      let tt = 0;
+      for (let i = minLen; i < maxLen; i++) {
+        pp += temp[i];
+        limit[i] = pp - 1;
+        pp <<= 1;
+        base[i + 1] = pp - (tt += temp[i]);
+      }
+      limit[maxLen] = pp + temp[maxLen] - 1;
+      base[minLen] = 0;
+    }
+
+    // Initialize for decoding
+    for (let i = 0; i < 256; i++) {
+      this.mtfSymbol[i] = i;
+      this.byteCount[i] = 0;
+    }
+
+    let runPos = 0;
+    let count = 0;
+    let symCountRemaining = 0;
+    let selector = 0;
+    let hufGroup = groups[0];
+    let base = hufGroup.base;
+    let limit = hufGroup.limit;
+
+    // Main decoding loop
+    while (true) {
+      if (!symCountRemaining--) {
+        symCountRemaining = GROUP_SIZE - 1;
+        if (selector >= nSelectors) {
+          throwError('Invalid selector index: exceeds available groups', BZIP2_ERROR_CODES.INVALID_SELECTOR);
+        }
+        hufGroup = groups[this.selectors[selector++]];
+        base = hufGroup.base;
+        limit = hufGroup.limit;
+      }
+
+      let i = hufGroup.minLen;
+      let j = bits(i) as number;
+
+      while (true) {
+        if (i > hufGroup.maxLen) {
+          throwError('Huffman decoding error: bit length exceeds maximum allowed', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
+        }
+        if (j <= limit[i]) break;
+        i++;
+        j = (j << 1) | (bits(1) as number);
+      }
+
+      j -= base[i];
+      if (j < 0 || j >= MAX_SYMBOLS) {
+        throwError('Symbol index out of bounds during Huffman decoding', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
+      }
+
+      const nextSym = hufGroup.permute[j];
+
+      if (nextSym === SYMBOL_RUNA || nextSym === SYMBOL_RUNB) {
+        if (!runPos) {
+          runPos = 1;
+          j = 0;
+        }
+        if (nextSym === SYMBOL_RUNA) j += runPos;
+        else j += 2 * runPos;
+        runPos <<= 1;
+        continue;
+      }
+
+      if (runPos) {
+        runPos = 0;
+        const runLength = j;
+        if (count + runLength > bufsize) {
+          throwError('Run-length overflow: decoded run exceeds buffer capacity', BZIP2_ERROR_CODES.BUFFER_OVERFLOW);
+        }
+        const uc = this.symToByte[this.mtfSymbol[0]];
+        this.byteCount[uc] += runLength;
+        for (let t = 0; t < runLength; t++) {
+          buf[count++] = uc;
+        }
+      }
+
+      if (nextSym > symTotal) break;
+
+      if (count >= bufsize) {
+        throwError('Buffer overflow: decoded data exceeds buffer capacity', BZIP2_ERROR_CODES.BUFFER_OVERFLOW);
+      }
+
+      const mtfIndex = nextSym - 1;
+      const uc = this.mtfSymbol[mtfIndex];
+      for (let k = mtfIndex - 1; k >= 0; k--) {
+        this.mtfSymbol[k + 1] = this.mtfSymbol[k];
+      }
+      this.mtfSymbol[0] = uc;
+      const decodedByte = this.symToByte[uc];
+      this.byteCount[decodedByte]++;
+      buf[count++] = decodedByte;
+    }
+
+    if (origPtr < 0 || origPtr >= count) {
+      throwError('Invalid original pointer: position outside decoded block', BZIP2_ERROR_CODES.INVALID_POSITION);
+    }
+
+    // Inverse BWT transform
+    let j = 0;
+    for (let i = 0; i < 256; i++) {
+      const k = j + this.byteCount[i];
+      this.byteCount[i] = j;
+      j = k;
+    }
+
+    for (let i = 0; i < count; i++) {
+      const uc = buf[i] & 0xff;
+      buf[this.byteCount[uc]] |= i << 8;
+      this.byteCount[uc]++;
+    }
+
+    // Output decoded data
+    let pos = 0;
+    let current = 0;
+    let run = 0;
+
    if (count) {
-        pos = buf[origPtr];
-        current = (pos & 0xff);
-        pos >>= 8;
-        run = -1;
+      pos = buf[origPtr];
+      current = pos & 0xff;
+      pos >>= 8;
+      run = -1;
    }
-    count = count;
-    var copies, previous, outbyte;
-    while(count) {
-        count--;
-        previous = current;
-        pos = buf[pos];
-        current = pos & 0xff;
-        pos >>= 8;
-        if (run++ == 3) {
-            copies = current;
-            outbyte = previous;
-            current = -1;
-        } else {
-            copies = 1;
-            outbyte = current;
-        }
-        while(copies--) {
-            crc = ((crc << 8) ^ this.crcTable[((crc>>24) ^ outbyte) & 0xFF])&0xFFFFFFFF; // crc32
-            stream(outbyte);
-        }
-        if (current != previous) run = 0;
+
+    let remaining = count;
+    while (remaining) {
+      remaining--;
+      const previous = current;
+      pos = buf[pos];
+      current = pos & 0xff;
+      pos >>= 8;
+
+      let copies: number;
+      let outbyte: number;
+
+      if (run++ === 3) {
+        copies = current;
+        outbyte = previous;
+        current = -1;
+      } else {
+        copies = 1;
+        outbyte = current;
+      }
+
+      while (copies--) {
+        crc = ((crc << 8) ^ this.crcTable[((crc >> 24) ^ outbyte) & 0xff]) & 0xffffffff;
+        stream(outbyte);
+      }
+
+      if (current !== previous) run = 0;
    }
-  
-    crc = (crc ^ (-1)) >>> 0;
-    if ((crc|0) != (crcblock|0)) messageArg.Error("Error in bzip2: crc32 do not match");
-    streamCRC = (crc ^ ((streamCRC << 1) | (streamCRC >>> 31))) & 0xFFFFFFFF;
-    return streamCRC;
-  };
-};
+
+    crc = (crc ^ -1) >>> 0;
+    if ((crc | 0) !== (crcblock | 0)) {
+      throwError('CRC32 mismatch: block checksum verification failed', BZIP2_ERROR_CODES.CRC_MISMATCH);
+    }
+
+    const newStreamCRC = (crc ^ (((streamCRC || 0) << 1) | ((streamCRC || 0) >>> 31))) & 0xffffffff;
+    return newStreamCRC;
+  }
+}
--- a/ts/bzip2/index.ts
+++ b/ts/bzip2/index.ts
@@ -1,45 +1,53 @@
 import * as plugins from '../plugins.js';
+import { Bzip2Error, BZIP2_ERROR_CODES } from '../errors.js';
+import type { IBitReader } from '../interfaces.js';

 import { Bzip2 } from './bzip2.js';
 import { bitIterator } from './bititerator.js';

-export function unbzip2Stream() {
+/**
+ * Creates a streaming BZIP2 decompression transform
+ */
+export function unbzip2Stream(): plugins.smartstream.SmartDuplex<Buffer, Buffer> {
  const bzip2Instance = new Bzip2();
-  var bufferQueue = [];
-  var hasBytes = 0;
-  var blockSize = 0;
-  var broken = false;
-  var done = false;
-  var bitReader = null;
-  var streamCRC = null;
+  const bufferQueue: Buffer[] = [];
+  let hasBytes = 0;
+  let blockSize = 0;
+  let broken = false;
+  let bitReader: IBitReader | null = null;
+  let streamCRC: number | null = null;

-  function decompressBlock() {
+  function decompressBlock(): Buffer | undefined {
    if (!blockSize) {
-      blockSize = bzip2Instance.header(bitReader);
+      blockSize = bzip2Instance.header(bitReader!);
      streamCRC = 0;
-    } else {
-      var bufsize = 100000 * blockSize;
-      var buf = new Int32Array(bufsize);
-
-      var chunk = [];
-      var f = function (b) {
-        chunk.push(b);
-      };
-
-      streamCRC = bzip2Instance.decompress(bitReader, f, buf, bufsize, streamCRC);
-      if (streamCRC === null) {
-        // reset for next bzip2 header
-        blockSize = 0;
-        return;
-      } else {
-        return Buffer.from(chunk);
-      }
+      return undefined;
    }
+
+    const bufsize = 100000 * blockSize;
+    const buf = new Int32Array(bufsize);
+    const chunk: number[] = [];
+
+    const outputFunc = (b: number): void => {
+      chunk.push(b);
+    };
+
+    streamCRC = bzip2Instance.decompress(bitReader!, outputFunc, buf, bufsize, streamCRC);
+
+    if (streamCRC === null) {
+      // Reset for next bzip2 header
+      blockSize = 0;
+      return undefined;
+    }
+
+    return Buffer.from(chunk);
  }

-  var outlength = 0;
-  const decompressAndPush = async () => {
-    if (broken) return;
+  let outlength = 0;
+
+  const decompressAndPush = async (): Promise<Buffer | undefined> => {
+    if (broken) return undefined;
+
    try {
      const resultChunk = decompressBlock();
      if (resultChunk) {
@@ -47,37 +55,39 @@ export function unbzip2Stream() {
      }
      return resultChunk;
    } catch (e) {
-      console.error(e);
      broken = true;
+      if (e instanceof Error) {
+        throw new Bzip2Error(`Decompression failed: ${e.message}`, BZIP2_ERROR_CODES.INVALID_BLOCK_DATA);
+      }
+      throw e;
    }
  };
-  let counter = 0;
-  return new plugins.smartstream.SmartDuplex({
+
+  return new plugins.smartstream.SmartDuplex<Buffer, Buffer>({
    objectMode: true,
    name: 'bzip2',
-    debug: false,
    highWaterMark: 1,
    writeFunction: async function (data, streamTools) {
-      // console.log(`got chunk ${counter++}`)
      bufferQueue.push(data);
      hasBytes += data.length;
+
      if (bitReader === null) {
        bitReader = bitIterator(function () {
-          return bufferQueue.shift();
+          return bufferQueue.shift()!;
        });
      }
-      while (!broken && hasBytes - bitReader.bytesRead + 1 >= (25000 + 100000 * blockSize || 4)) {
-        //console.error('decompressing with', hasBytes - bitReader.bytesRead + 1, 'bytes in buffer');
+
+      const threshold = 25000 + 100000 * blockSize || 4;
+      while (!broken && hasBytes - bitReader.bytesRead + 1 >= threshold) {
        const result = await decompressAndPush();
        if (!result) {
          continue;
        }
-        // console.log(result.toString());
        await streamTools.push(result);
      }
+      return null;
    },
    finalFunction: async function (streamTools) {
-      //console.error(x,'last compressing with', hasBytes, 'bytes in buffer');
      while (!broken && bitReader && hasBytes > bitReader.bytesRead) {
        const result = await decompressAndPush();
        if (!result) {
@@ -85,9 +95,11 @@ export function unbzip2Stream() {
        }
        await streamTools.push(result);
      }
-      if (!broken) {
-        if (streamCRC !== null) this.emit('error', new Error('input stream ended prematurely'));
+
+      if (!broken && streamCRC !== null) {
+        this.emit('error', new Bzip2Error('Input stream ended prematurely', BZIP2_ERROR_CODES.PREMATURE_END));
      }
+      return null;
    },
  });
 }
--- a/ts/classes.archiveanalyzer.ts
+++ b/ts/classes.archiveanalyzer.ts
@@ -1,21 +1,41 @@
 import type { SmartArchive } from './classes.smartarchive.js';
+import type { TSupportedMime } from './interfaces.js';
 import * as plugins from './plugins.js';

+/**
+ * Type for decompression streams
+ */
+export type TDecompressionStream =
+  | plugins.stream.Transform
+  | plugins.stream.Duplex
+  | plugins.tarStream.Extract;
+
+/**
+ * Result of archive analysis
+ */
 export interface IAnalyzedResult {
-  fileType: plugins.fileType.FileTypeResult;
+  fileType: plugins.fileType.FileTypeResult | undefined;
  isArchive: boolean;
-  resultStream: plugins.smartstream.SmartDuplex;
-  decompressionStream: plugins.stream.Transform | plugins.stream.Duplex | plugins.tarStream.Extract;
+  resultStream: plugins.smartstream.SmartDuplex<Buffer, Buffer>;
+  decompressionStream: TDecompressionStream;
 }

+/**
+ * Analyzes archive streams to detect format and provide decompression
+ */
 export class ArchiveAnalyzer {
-  smartArchiveRef: SmartArchive;
+  private smartArchiveRef: SmartArchive;

  constructor(smartArchiveRefArg: SmartArchive) {
    this.smartArchiveRef = smartArchiveRefArg;
  }

-  private async mimeTypeIsArchive(mimeType: string): Promise<boolean> {
+  /**
+   * Check if a MIME type represents an archive format
+   */
+  private async mimeTypeIsArchive(mimeType: string | undefined): Promise<boolean> {
+    if (!mimeType) return false;
+
    const archiveMimeTypes: Set<string> = new Set([
      'application/zip',
      'application/x-rar-compressed',
@@ -23,44 +43,46 @@ export class ArchiveAnalyzer {
      'application/gzip',
      'application/x-7z-compressed',
      'application/x-bzip2',
-      // Add other archive mime types here
    ]);
-  
+
    return archiveMimeTypes.has(mimeType);
  }

-
-  private async getDecompressionStream(
-    mimeTypeArg: plugins.fileType.FileTypeResult['mime']
-  ):  Promise<plugins.stream.Transform | plugins.stream.Duplex | plugins.tarStream.Extract> {
+  /**
+   * Get the appropriate decompression stream for a MIME type
+   */
+  private async getDecompressionStream(mimeTypeArg: TSupportedMime): Promise<TDecompressionStream> {
    switch (mimeTypeArg) {
      case 'application/gzip':
        return this.smartArchiveRef.gzipTools.getDecompressionStream();
      case 'application/zip':
        return this.smartArchiveRef.zipTools.getDecompressionStream();
      case 'application/x-bzip2':
-        return await this.smartArchiveRef.bzip2Tools.getDecompressionStream(); // replace with your own bzip2 decompression stream
+        return this.smartArchiveRef.bzip2Tools.getDecompressionStream();
      case 'application/x-tar':
-        return this.smartArchiveRef.tarTools.getDecompressionStream(); // replace with your own tar decompression stream
+        return this.smartArchiveRef.tarTools.getDecompressionStream();
      default:
        // Handle unsupported formats or no decompression needed
        return plugins.smartstream.createPassThrough();
    }
  }

-  public getAnalyzedStream() {
+  /**
+   * Create an analyzed stream that detects archive type and provides decompression
+   * Emits a single IAnalyzedResult object
+   */
+  public getAnalyzedStream(): plugins.smartstream.SmartDuplex<Buffer, IAnalyzedResult> {
    let firstRun = true;
    const resultStream = plugins.smartstream.createPassThrough();
+
    const analyzerstream = new plugins.smartstream.SmartDuplex<Buffer, IAnalyzedResult>({
      readableObjectMode: true,
      writeFunction: async (chunkArg: Buffer, streamtools) => {
        if (firstRun) {
          firstRun = false;
          const fileType = await plugins.fileType.fileTypeFromBuffer(chunkArg);
-          const decompressionStream = await this.getDecompressionStream(fileType?.mime as any);
-          /**
-           * analyzed stream emits once with this object
-           */
+          const decompressionStream = await this.getDecompressionStream(fileType?.mime as TSupportedMime);
+
          const result: IAnalyzedResult = {
            fileType,
            isArchive: await this.mimeTypeIsArchive(fileType?.mime),
@@ -72,11 +94,12 @@ export class ArchiveAnalyzer {
        await resultStream.backpressuredPush(chunkArg);
        return null;
      },
-      finalFunction: async (tools) => {
+      finalFunction: async () => {
        resultStream.push(null);
        return null;
-      }
+      },
    });
+
    return analyzerstream;
  }
 }
--- a/ts/classes.bzip2tools.ts
+++ b/ts/classes.bzip2tools.ts
@@ -13,4 +13,4 @@ export class Bzip2Tools {
  getDecompressionStream() {
    return unbzip2Stream();
  }
-}
+}
--- a/ts/classes.gziptools.ts
+++ b/ts/classes.gziptools.ts
@@ -1,59 +1,138 @@
-import type { SmartArchive } from './classes.smartarchive.js';
-import * as plugins from './plugins.js'
+import * as plugins from './plugins.js';
+import type { TCompressionLevel } from './interfaces.js';

-// This class wraps fflate's gunzip in a Node.js Transform stream
-export class CompressGunzipTransform extends plugins.stream.Transform {
-  constructor() {
+/**
+ * Transform stream for GZIP compression using fflate
+ */
+export class GzipCompressionTransform extends plugins.stream.Transform {
+  private gzip: plugins.fflate.Gzip;
+
+  constructor(level: TCompressionLevel = 6) {
    super();
-  }

-  _transform(chunk: Buffer, encoding: BufferEncoding, callback: plugins.stream.TransformCallback) {
-    plugins.fflate.gunzip(chunk, (err, decompressed) => {
-      if (err) {
-        callback(err);
-      } else {
-        this.push(decompressed);
-        callback();
+    // Create a streaming Gzip compressor
+    this.gzip = new plugins.fflate.Gzip({ level }, (chunk, final) => {
+      this.push(Buffer.from(chunk));
+      if (final) {
+        this.push(null);
      }
    });
  }
-}

-// DecompressGunzipTransform class that extends the Node.js Transform stream to
-// create a stream that decompresses GZip-compressed data using fflate's gunzip function
-export class DecompressGunzipTransform extends plugins.stream.Transform {
-  constructor() {
-    super();
+  _transform(
+    chunk: Buffer,
+    encoding: BufferEncoding,
+    callback: plugins.stream.TransformCallback
+  ): void {
+    try {
+      this.gzip.push(chunk, false);
+      callback();
+    } catch (err) {
+      callback(err as Error);
+    }
  }

-  _transform(chunk: Buffer, encoding: BufferEncoding, callback: plugins.stream.TransformCallback) {
-    // Use fflate's gunzip function to decompress the chunk
-    plugins.fflate.gunzip(chunk, (err, decompressed) => {
-      if (err) {
-        // If an error occurs during decompression, pass the error to the callback
-        callback(err);
-      } else {
-        // If decompression is successful, push the decompressed data into the stream
-        this.push(decompressed);
-        callback();
+  _flush(callback: plugins.stream.TransformCallback): void {
+    try {
+      this.gzip.push(new Uint8Array(0), true);
+      callback();
+    } catch (err) {
+      callback(err as Error);
+    }
+  }
+}
+
+/**
+ * Transform stream for GZIP decompression using fflate
+ */
+export class GzipDecompressionTransform extends plugins.stream.Transform {
+  private gunzip: plugins.fflate.Gunzip;
+
+  constructor() {
+    super();
+
+    // Create a streaming Gunzip decompressor
+    this.gunzip = new plugins.fflate.Gunzip((chunk, final) => {
+      this.push(Buffer.from(chunk));
+      if (final) {
+        this.push(null);
      }
    });
  }
+
+  _transform(
+    chunk: Buffer,
+    encoding: BufferEncoding,
+    callback: plugins.stream.TransformCallback
+  ): void {
+    try {
+      this.gunzip.push(chunk, false);
+      callback();
+    } catch (err) {
+      callback(err as Error);
+    }
+  }
+
+  _flush(callback: plugins.stream.TransformCallback): void {
+    try {
+      this.gunzip.push(new Uint8Array(0), true);
+      callback();
+    } catch (err) {
+      callback(err as Error);
+    }
+  }
 }

-
+/**
+ * GZIP compression and decompression utilities
+ */
 export class GzipTools {
-  smartArchiveRef: SmartArchive;
-
-  constructor(smartArchiveRefArg: SmartArchive) {
-    this.smartArchiveRef = smartArchiveRefArg;
+  /**
+   * Get a streaming compression transform
+   */
+  public getCompressionStream(level?: TCompressionLevel): plugins.stream.Transform {
+    return new GzipCompressionTransform(level);
  }

-  public getCompressionStream() {
-    return new CompressGunzipTransform();
+  /**
+   * Get a streaming decompression transform
+   */
+  public getDecompressionStream(): plugins.stream.Transform {
+    return new GzipDecompressionTransform();
  }

-  public getDecompressionStream() {
-    return new DecompressGunzipTransform();
+  /**
+   * Compress data synchronously
+   */
+  public compressSync(data: Buffer, level?: TCompressionLevel): Buffer {
+    const options = level !== undefined ? { level } : undefined;
+    return Buffer.from(plugins.fflate.gzipSync(data, options));
+  }
+
+  /**
+   * Decompress data synchronously
+   */
+  public decompressSync(data: Buffer): Buffer {
+    return Buffer.from(plugins.fflate.gunzipSync(data));
+  }
+
+  /**
+   * Compress data asynchronously
+   * Note: Uses sync version for Deno compatibility (fflate async uses Web Workers
+   * which have issues in Deno)
+   */
+  public async compress(data: Buffer, level?: TCompressionLevel): Promise<Buffer> {
+    // Use sync version wrapped in Promise for cross-runtime compatibility
+    return this.compressSync(data, level);
+  }
+
+  /**
+   * Decompress data asynchronously
+   * Note: Uses sync version for Deno compatibility (fflate async uses Web Workers
+   * which have issues in Deno)
+   */
+  public async decompress(data: Buffer): Promise<Buffer> {
+    // Use sync version wrapped in Promise for cross-runtime compatibility
+    return this.decompressSync(data);
  }
 }
--- a/ts/classes.smartarchive.ts
+++ b/ts/classes.smartarchive.ts
@@ -1,157 +1,419 @@
 import * as plugins from './plugins.js';
-import * as paths from './paths.js';
+import type {
+  IArchiveEntry,
+  IArchiveEntryInfo,
+  IArchiveInfo,
+  TArchiveFormat,
+  TCompressionLevel,
+  TEntryFilter,
+} from './interfaces.js';

 import { Bzip2Tools } from './classes.bzip2tools.js';
 import { GzipTools } from './classes.gziptools.js';
 import { TarTools } from './classes.tartools.js';
 import { ZipTools } from './classes.ziptools.js';
-
 import { ArchiveAnalyzer, type IAnalyzedResult } from './classes.archiveanalyzer.js';

-import type { from } from '@push.rocks/smartrx/dist_ts/smartrx.plugins.rxjs.js';
+/**
+ * Pending directory entry for async resolution
+ */
+interface IPendingDirectory {
+  sourcePath: string;
+  archiveBase?: string;
+}

+/**
+ * Main class for archive manipulation with fluent API
+ * Supports TAR, ZIP, GZIP, and BZIP2 formats
+ *
+ * @example Extraction from URL
+ * ```typescript
+ * await SmartArchive.create()
+ *   .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz')
+ *   .stripComponents(1)
+ *   .extract('./node_modules/lodash');
+ * ```
+ *
+ * @example Creation with thenable
+ * ```typescript
+ * const archive = await SmartArchive.create()
+ *   .format('tar.gz')
+ *   .compression(9)
+ *   .entry('config.json', JSON.stringify(config))
+ *   .directory('./src');
+ * ```
+ */
 export class SmartArchive {
-  // STATIC
-  public static async fromArchiveUrl(urlArg: string): Promise<SmartArchive> {
-    const smartArchiveInstance = new SmartArchive();
-    smartArchiveInstance.sourceUrl = urlArg;
-    return smartArchiveInstance;
+  // ============================================
+  // STATIC ENTRY POINT
+  // ============================================
+
+  /**
+   * Create a new SmartArchive instance for fluent configuration
+   */
+  public static create(): SmartArchive {
+    return new SmartArchive();
  }

-  public static async fromArchiveFile(filePathArg: string): Promise<SmartArchive> {
-    const smartArchiveInstance = new SmartArchive();
-    smartArchiveInstance.sourceFilePath = filePathArg;
-    return smartArchiveInstance;
-  }
+  // ============================================
+  // TOOLS (public for internal use)
+  // ============================================

-  public static async fromArchiveStream(
-    streamArg: plugins.stream.Readable | plugins.stream.Duplex | plugins.stream.Transform
-  ): Promise<SmartArchive> {
-    const smartArchiveInstance = new SmartArchive();
-    smartArchiveInstance.sourceStream = streamArg;
-    return smartArchiveInstance;
-  }
-
-  // INSTANCE
-  public gzipTools = new GzipTools(this);
+  public tarTools = new TarTools();
+  public zipTools = new ZipTools();
+  public gzipTools = new GzipTools();
  public bzip2Tools = new Bzip2Tools(this);
-  public tarTools = new TarTools(this);
-  public zipTools = new ZipTools(this);
  public archiveAnalyzer = new ArchiveAnalyzer(this);

-  public sourceUrl: string;
-  public sourceFilePath: string;
-  public sourceStream: plugins.stream.Readable | plugins.stream.Duplex | plugins.stream.Transform;
+  // ============================================
+  // SOURCE STATE (extraction mode)
+  // ============================================

-  public archiveName: string;
-  public singleFileMode: boolean = false;
+  private sourceUrl?: string;
+  private sourceFilePath?: string;
+  private sourceStream?: plugins.stream.Readable | plugins.stream.Duplex | plugins.stream.Transform;

-  public addedDirectories: string[] = [];
-  public addedFiles: (plugins.smartfile.SmartFile | plugins.smartfile.StreamFile)[] = [];
-  public addedUrls: string[] = [];
+  // ============================================
+  // CREATION STATE
+  // ============================================
+
+  private archiveBuffer?: Buffer;
+  private creationFormat?: TArchiveFormat;
+  private _compressionLevel: TCompressionLevel = 6;
+  private pendingEntries: IArchiveEntry[] = [];
+  private pendingDirectories: IPendingDirectory[] = [];
+
+  // ============================================
+  // FLUENT STATE
+  // ============================================
+
+  private _mode: 'extract' | 'create' | null = null;
+  private _filters: TEntryFilter[] = [];
+  private _excludePatterns: RegExp[] = [];
+  private _includePatterns: RegExp[] = [];
+  private _stripComponents: number = 0;
+  private _overwrite: boolean = false;
+  private _fileName?: string;

  constructor() {}

+  // ============================================
+  // SOURCE METHODS (set extraction mode)
+  // ============================================
+
  /**
-   * gets the original archive stream
+   * Load archive from URL
   */
-  public async getArchiveStream() {
-    if (this.sourceStream) {
-      return this.sourceStream;
-    }
-    if (this.sourceUrl) {
-      const urlStream = await plugins.smartrequest.getStream(this.sourceUrl);
-      return urlStream;
-    }
-    if (this.sourceFilePath) {
-      const fileStream = plugins.smartfile.fs.toReadStream(this.sourceFilePath);
-      return fileStream;
-    }
+  public url(urlArg: string): this {
+    this.ensureNotInCreateMode('url');
+    this._mode = 'extract';
+    this.sourceUrl = urlArg;
+    return this;
  }

-  public async exportToTarGzStream() {
-    const tarPackStream = await this.tarTools.getPackStream();
-    const gzipStream = await this.gzipTools.getCompressionStream();
-    // const archiveStream = tarPackStream.pipe(gzipStream);
-    // return archiveStream;
+  /**
+   * Load archive from file path
+   */
+  public file(pathArg: string): this {
+    this.ensureNotInCreateMode('file');
+    this._mode = 'extract';
+    this.sourceFilePath = pathArg;
+    return this;
  }

-  public async exportToFs(targetDir: string, fileNameArg?: string): Promise<void> {
+  /**
+   * Load archive from readable stream
+   */
+  public stream(streamArg: plugins.stream.Readable | plugins.stream.Duplex | plugins.stream.Transform): this {
+    this.ensureNotInCreateMode('stream');
+    this._mode = 'extract';
+    this.sourceStream = streamArg;
+    return this;
+  }
+
+  /**
+   * Load archive from buffer
+   */
+  public buffer(bufferArg: Buffer): this {
+    this.ensureNotInCreateMode('buffer');
+    this._mode = 'extract';
+    this.sourceStream = plugins.stream.Readable.from(bufferArg);
+    return this;
+  }
+
+  // ============================================
+  // FORMAT METHODS (set creation mode)
+  // ============================================
+
+  /**
+   * Set output format for archive creation
+   */
+  public format(fmt: TArchiveFormat): this {
+    this.ensureNotInExtractMode('format');
+    this._mode = 'create';
+    this.creationFormat = fmt;
+    return this;
+  }
+
+  /**
+   * Set compression level (0-9)
+   */
+  public compression(level: TCompressionLevel): this {
+    this._compressionLevel = level;
+    return this;
+  }
+
+  // ============================================
+  // CONTENT METHODS (creation mode)
+  // ============================================
+
+  /**
+   * Add a single file entry to the archive
+   */
+  public entry(archivePath: string, content: string | Buffer): this {
+    this.ensureNotInExtractMode('entry');
+    if (!this._mode) this._mode = 'create';
+    this.pendingEntries.push({ archivePath, content });
+    return this;
+  }
+
+  /**
+   * Add multiple entries to the archive
+   */
+  public entries(entriesArg: Array<{ archivePath: string; content: string | Buffer }>): this {
+    this.ensureNotInExtractMode('entries');
+    if (!this._mode) this._mode = 'create';
+    for (const e of entriesArg) {
+      this.pendingEntries.push({ archivePath: e.archivePath, content: e.content });
+    }
+    return this;
+  }
+
+  /**
+   * Add an entire directory to the archive (queued, resolved at build time)
+   */
+  public directory(sourcePath: string, archiveBase?: string): this {
+    this.ensureNotInExtractMode('directory');
+    if (!this._mode) this._mode = 'create';
+    this.pendingDirectories.push({ sourcePath, archiveBase });
+    return this;
+  }
+
+  /**
+   * Add a SmartFile to the archive
+   */
+  public addSmartFile(fileArg: plugins.smartfile.SmartFile, archivePath?: string): this {
+    this.ensureNotInExtractMode('addSmartFile');
+    if (!this._mode) this._mode = 'create';
+    this.pendingEntries.push({
+      archivePath: archivePath || fileArg.relative,
+      content: fileArg,
+    });
+    return this;
+  }
+
+  /**
+   * Add a StreamFile to the archive
+   */
+  public addStreamFile(fileArg: plugins.smartfile.StreamFile, archivePath?: string): this {
+    this.ensureNotInExtractMode('addStreamFile');
+    if (!this._mode) this._mode = 'create';
+    this.pendingEntries.push({
+      archivePath: archivePath || fileArg.relativeFilePath,
+      content: fileArg,
+    });
+    return this;
+  }
+
+  // ============================================
+  // FILTER METHODS (both modes)
+  // ============================================
+
+  /**
+   * Filter entries by predicate function
+   */
+  public filter(predicate: TEntryFilter): this {
+    this._filters.push(predicate);
+    return this;
+  }
+
+  /**
+   * Include only entries matching the pattern
+   */
+  public include(pattern: string | RegExp): this {
+    const regex = typeof pattern === 'string' ? new RegExp(pattern) : pattern;
+    this._includePatterns.push(regex);
+    return this;
+  }
+
+  /**
+   * Exclude entries matching the pattern
+   */
+  public exclude(pattern: string | RegExp): this {
+    const regex = typeof pattern === 'string' ? new RegExp(pattern) : pattern;
+    this._excludePatterns.push(regex);
+    return this;
+  }
+
+  // ============================================
+  // EXTRACTION OPTIONS
+  // ============================================
+
+  /**
+   * Strip N leading path components from extracted files
+   */
+  public stripComponents(n: number): this {
+    this._stripComponents = n;
+    return this;
+  }
+
+  /**
+   * Overwrite existing files during extraction
+   */
+  public overwrite(value: boolean = true): this {
+    this._overwrite = value;
+    return this;
+  }
+
+  /**
+   * Set output filename for single-file archives (gz, bz2)
+   */
+  public fileName(name: string): this {
+    this._fileName = name;
+    return this;
+  }
+
+  // ============================================
+  // TERMINAL METHODS - EXTRACTION
+  // ============================================
+
+  /**
+   * Extract archive to filesystem directory
+   */
+  public async extract(targetDir: string): Promise<void> {
+    this.ensureExtractionSource();
    const done = plugins.smartpromise.defer<void>();
-    const streamFileStream = await this.exportToStreamOfStreamFiles();
+    const streamFileStream = await this.toStreamFiles();
+
    streamFileStream.pipe(
      new plugins.smartstream.SmartDuplex({
        objectMode: true,
-        writeFunction: async (streamFileArg: plugins.smartfile.StreamFile, streamtools) => {
-          const done = plugins.smartpromise.defer<void>();
-          console.log(streamFileArg.relativeFilePath ? streamFileArg.relativeFilePath : 'no relative path');
+        writeFunction: async (streamFileArg: plugins.smartfile.StreamFile) => {
+          const innerDone = plugins.smartpromise.defer<void>();
          const streamFile = streamFileArg;
+          let relativePath = streamFile.relativeFilePath || this._fileName || 'extracted_file';
+
+          // Apply stripComponents
+          if (this._stripComponents > 0) {
+            const parts = relativePath.split('/');
+            relativePath = parts.slice(this._stripComponents).join('/');
+            if (!relativePath) {
+              innerDone.resolve();
+              return;
+            }
+          }
+
+          // Apply filter
+          const filterFn = this.buildFilterFunction();
+          if (filterFn) {
+            const entryInfo: IArchiveEntryInfo = {
+              path: relativePath,
+              size: 0,
+              isDirectory: false,
+              isFile: true,
+            };
+            if (!filterFn(entryInfo)) {
+              innerDone.resolve();
+              return;
+            }
+          }
+
          const readStream = await streamFile.createReadStream();
-          await plugins.smartfile.fs.ensureDir(targetDir);
-          const writePath = plugins.path.join(
-            targetDir,
-            streamFile.relativeFilePath || fileNameArg
-          );
-          await plugins.smartfile.fs.ensureDir(plugins.path.dirname(writePath));
-          const writeStream = plugins.smartfile.fsStream.createWriteStream(writePath);
+          await plugins.fsPromises.mkdir(targetDir, { recursive: true });
+          const writePath = plugins.path.join(targetDir, relativePath);
+          await plugins.fsPromises.mkdir(plugins.path.dirname(writePath), { recursive: true });
+          const writeStream = plugins.fs.createWriteStream(writePath);
          readStream.pipe(writeStream);
          writeStream.on('finish', () => {
-            done.resolve();
+            innerDone.resolve();
          });
-          await done.promise;
+          await innerDone.promise;
        },
        finalFunction: async () => {
          done.resolve();
        },
      })
    );
+
    return done.promise;
  }

-  public async exportToStreamOfStreamFiles() {
+  /**
+   * Extract archive to a stream of StreamFile objects
+   */
+  public async toStreamFiles(): Promise<plugins.smartstream.StreamIntake<plugins.smartfile.StreamFile>> {
+    this.ensureExtractionSource();
+
    const streamFileIntake = new plugins.smartstream.StreamIntake<plugins.smartfile.StreamFile>({
      objectMode: true,
    });
-    const archiveStream = await this.getArchiveStream();
+
+    // Guard to prevent multiple signalEnd calls
+    let hasSignaledEnd = false;
+    const safeSignalEnd = () => {
+      if (!hasSignaledEnd) {
+        hasSignaledEnd = true;
+        streamFileIntake.signalEnd();
+      }
+    };
+
+    const archiveStream = await this.getSourceStream();
    const createAnalyzedStream = () => this.archiveAnalyzer.getAnalyzedStream();

-    // lets create a function that can be called multiple times to unpack layers of archives
    const createUnpackStream = () =>
-      plugins.smartstream.createTransformFunction<IAnalyzedResult, any>(
+      plugins.smartstream.createTransformFunction<IAnalyzedResult, void>(
        async (analyzedResultChunk) => {
          if (analyzedResultChunk.fileType?.mime === 'application/x-tar') {
            const tarStream = analyzedResultChunk.decompressionStream as plugins.tarStream.Extract;
+
            tarStream.on('entry', async (header, stream, next) => {
              if (header.type === 'directory') {
-                console.log(`tar stream directory: ${header.name} ... skipping!`);
-                next();
+                stream.resume();
+                stream.on('end', () => next());
                return;
              }
-              console.log(`tar stream file: ${header.name}`);
-              const streamfile = plugins.smartfile.StreamFile.fromStream(stream, header.name);
+
+              const passThrough = new plugins.stream.PassThrough();
+              const streamfile = plugins.smartfile.StreamFile.fromStream(passThrough, header.name);
              streamFileIntake.push(streamfile);
-              stream.on('end', function () {
-                next(); // ready for next entry
+              stream.pipe(passThrough);
+              stream.on('end', () => {
+                passThrough.end();
+                next();
              });
            });
-            tarStream.on('finish', function () {
-              console.log('finished');
-              streamFileIntake.signalEnd();
+
+            tarStream.on('finish', () => {
+              safeSignalEnd();
            });
+
            analyzedResultChunk.resultStream.pipe(analyzedResultChunk.decompressionStream);
          } else if (analyzedResultChunk.fileType?.mime === 'application/zip') {
            analyzedResultChunk.resultStream
              .pipe(analyzedResultChunk.decompressionStream)
-              .pipe(new plugins.smartstream.SmartDuplex({
-                objectMode: true,
-                writeFunction: async (streamFileArg: plugins.smartfile.StreamFile, streamtools) => {
-                  streamFileIntake.push(streamFileArg);
-                },
-                finalFunction: async () => {
-                  streamFileIntake.signalEnd();
-                }
-              }));
+              .pipe(
+                new plugins.smartstream.SmartDuplex({
+                  objectMode: true,
+                  writeFunction: async (streamFileArg: plugins.smartfile.StreamFile) => {
+                    streamFileIntake.push(streamFileArg);
+                  },
+                  finalFunction: async () => {
+                    safeSignalEnd();
+                  },
+                })
+              );
          } else if (analyzedResultChunk.isArchive && analyzedResultChunk.decompressionStream) {
+            // For nested archives (like gzip containing tar)
            analyzedResultChunk.resultStream
              .pipe(analyzedResultChunk.decompressionStream)
              .pipe(createAnalyzedStream())
@@ -162,15 +424,440 @@ export class SmartArchive {
              analyzedResultChunk.fileType?.ext
            );
            streamFileIntake.push(streamFile);
-            streamFileIntake.signalEnd();
+            safeSignalEnd();
          }
        },
-        {
-          objectMode: true,
-        }
+        { objectMode: true }
      );

    archiveStream.pipe(createAnalyzedStream()).pipe(createUnpackStream());
    return streamFileIntake;
  }
+
+  /**
+   * Extract archive to an array of SmartFile objects (in-memory)
+   */
+  public async toSmartFiles(): Promise<plugins.smartfile.SmartFile[]> {
+    this.ensureExtractionSource();
+    const streamFiles = await this.toStreamFiles();
+    const smartFiles: plugins.smartfile.SmartFile[] = [];
+    const filterFn = this.buildFilterFunction();
+    const pendingConversions: Promise<void>[] = [];
+
+    return new Promise((resolve, reject) => {
+      streamFiles.on('data', (streamFile: plugins.smartfile.StreamFile) => {
+        // Track all async conversions to ensure they complete before resolving
+        const conversion = (async () => {
+          try {
+            const smartFile = await streamFile.toSmartFile();
+
+            // Apply filter if configured
+            if (filterFn) {
+              const passes = filterFn({
+                path: smartFile.relative,
+                size: smartFile.contents.length,
+                isDirectory: false,
+                isFile: true,
+              });
+              if (!passes) return;
+            }
+
+            smartFiles.push(smartFile);
+          } catch (err) {
+            reject(err);
+          }
+        })();
+        pendingConversions.push(conversion);
+      });
+      streamFiles.on('end', async () => {
+        // Wait for all conversions to complete before resolving
+        await Promise.all(pendingConversions);
+        resolve(smartFiles);
+      });
+      streamFiles.on('error', reject);
+    });
+  }
+
+  /**
+   * Extract a single file from the archive by path
+   */
+  public async extractFile(filePath: string): Promise<plugins.smartfile.SmartFile | null> {
+    this.ensureExtractionSource();
+    const streamFiles = await this.toStreamFiles();
+
+    return new Promise((resolve, reject) => {
+      let found = false;
+
+      streamFiles.on('data', async (streamFile: plugins.smartfile.StreamFile) => {
+        if (streamFile.relativeFilePath === filePath || streamFile.relativeFilePath?.endsWith(filePath)) {
+          found = true;
+          try {
+            const smartFile = await streamFile.toSmartFile();
+            resolve(smartFile);
+          } catch (err) {
+            reject(err);
+          }
+        }
+      });
+
+      streamFiles.on('end', () => {
+        if (!found) {
+          resolve(null);
+        }
+      });
+
+      streamFiles.on('error', reject);
+    });
+  }
+
+  // ============================================
+  // TERMINAL METHODS - OUTPUT
+  // ============================================
+
+  /**
+   * Build and finalize the archive, returning this instance
+   */
+  public async build(): Promise<SmartArchive> {
+    await this.doBuild();
+    return this;
+  }
+
+  /**
+   * Internal build implementation (avoids thenable recursion)
+   */
+  private async doBuild(): Promise<void> {
+    if (this._mode === 'extract') {
+      // For extraction mode, nothing to build
+      return;
+    }
+
+    if (this.archiveBuffer) {
+      // Already built
+      return;
+    }
+
+    // For creation mode, build the archive buffer
+    this.ensureCreationFormat();
+    await this.resolveDirectories();
+
+    const entries = this.getFilteredEntries();
+
+    if (this.creationFormat === 'tar' || this.creationFormat === 'tar.gz' || this.creationFormat === 'tgz') {
+      if (this.creationFormat === 'tar') {
+        this.archiveBuffer = await this.tarTools.packFiles(entries);
+      } else {
+        this.archiveBuffer = await this.tarTools.packFilesToTarGz(entries, this._compressionLevel);
+      }
+    } else if (this.creationFormat === 'zip') {
+      this.archiveBuffer = await this.zipTools.createZip(entries, this._compressionLevel);
+    } else if (this.creationFormat === 'gz') {
+      if (entries.length !== 1) {
+        throw new Error('GZIP format only supports a single file');
+      }
+      let content: Buffer;
+      if (typeof entries[0].content === 'string') {
+        content = Buffer.from(entries[0].content);
+      } else if (Buffer.isBuffer(entries[0].content)) {
+        content = entries[0].content;
+      } else {
+        throw new Error('GZIP format requires string or Buffer content');
+      }
+      this.archiveBuffer = await this.gzipTools.compress(content, this._compressionLevel);
+    } else {
+      throw new Error(`Unsupported format: ${this.creationFormat}`);
+    }
+  }
+
+  /**
+   * Build archive and return as Buffer
+   */
+  public async toBuffer(): Promise<Buffer> {
+    if (this._mode === 'create' && !this.archiveBuffer) {
+      await this.doBuild();
+    }
+
+    if (this.archiveBuffer) {
+      return this.archiveBuffer;
+    }
+
+    // For extraction mode, get the source as buffer
+    const stream = await this.getSourceStream();
+    return this.streamToBuffer(stream);
+  }
+
+  /**
+   * Build archive and write to file
+   */
+  public async toFile(filePath: string): Promise<void> {
+    const buffer = await this.toBuffer();
+    await plugins.fsPromises.mkdir(plugins.path.dirname(filePath), { recursive: true });
+    await plugins.fsPromises.writeFile(filePath, buffer);
+  }
+
+  /**
+   * Get archive as a readable stream
+   */
+  public async toStream(): Promise<plugins.stream.Readable> {
+    if (this._mode === 'create' && !this.archiveBuffer) {
+      await this.doBuild();
+    }
+
+    if (this.archiveBuffer) {
+      return plugins.stream.Readable.from(this.archiveBuffer);
+    }
+
+    return this.getSourceStream();
+  }
+
+  // ============================================
+  // TERMINAL METHODS - ANALYSIS
+  // ============================================
+
+  /**
+   * Analyze the archive and return metadata
+   */
+  public async analyze(): Promise<IArchiveInfo> {
+    this.ensureExtractionSource();
+    const stream = await this.getSourceStream();
+    const firstChunk = await this.readFirstChunk(stream);
+    const fileType = await plugins.fileType.fileTypeFromBuffer(firstChunk);
+
+    let format: TArchiveFormat | null = null;
+    let isCompressed = false;
+    let isArchive = false;
+
+    if (fileType) {
+      switch (fileType.mime) {
+        case 'application/gzip':
+          format = 'gz';
+          isCompressed = true;
+          isArchive = true;
+          break;
+        case 'application/zip':
+          format = 'zip';
+          isCompressed = true;
+          isArchive = true;
+          break;
+        case 'application/x-tar':
+          format = 'tar';
+          isArchive = true;
+          break;
+        case 'application/x-bzip2':
+          format = 'bz2';
+          isCompressed = true;
+          isArchive = true;
+          break;
+      }
+    }
+
+    return {
+      format,
+      isCompressed,
+      isArchive,
+    };
+  }
+
+  /**
+   * List all entries in the archive
+   */
+  public async list(): Promise<IArchiveEntryInfo[]> {
+    this.ensureExtractionSource();
+    const entries: IArchiveEntryInfo[] = [];
+    const streamFiles = await this.toStreamFiles();
+
+    return new Promise((resolve, reject) => {
+      streamFiles.on('data', (streamFile: plugins.smartfile.StreamFile) => {
+        entries.push({
+          path: streamFile.relativeFilePath || 'unknown',
+          size: 0, // Size not available without reading
+          isDirectory: false,
+          isFile: true,
+        });
+      });
+      streamFiles.on('end', () => resolve(entries));
+      streamFiles.on('error', reject);
+    });
+  }
+
+  /**
+   * Check if a specific file exists in the archive
+   */
+  public async hasFile(filePath: string): Promise<boolean> {
+    this.ensureExtractionSource();
+    const entries = await this.list();
+    return entries.some((e) => e.path === filePath || e.path.endsWith(filePath));
+  }
+
+
+  // ============================================
+  // PRIVATE HELPERS
+  // ============================================
+
+  /**
+   * Ensure we're not in create mode when calling extraction methods
+   */
+  private ensureNotInCreateMode(methodName: string): void {
+    if (this._mode === 'create') {
+      throw new Error(
+        `Cannot call .${methodName}() in creation mode. ` +
+          `Use extraction methods (.url(), .file(), .stream(), .buffer()) for extraction mode.`
+      );
+    }
+  }
+
+  /**
+   * Ensure we're not in extract mode when calling creation methods
+   */
+  private ensureNotInExtractMode(methodName: string): void {
+    if (this._mode === 'extract') {
+      throw new Error(
+        `Cannot call .${methodName}() in extraction mode. ` +
+          `Use .format() for creation mode.`
+      );
+    }
+  }
+
+  /**
+   * Ensure an extraction source is configured
+   */
+  private ensureExtractionSource(): void {
+    if (!this.sourceUrl && !this.sourceFilePath && !this.sourceStream && !this.archiveBuffer) {
+      throw new Error(
+        'No source configured. Call .url(), .file(), .stream(), or .buffer() first.'
+      );
+    }
+  }
+
+  /**
+   * Ensure a format is configured for creation
+   */
+  private ensureCreationFormat(): void {
+    if (!this.creationFormat) {
+      throw new Error('No format specified. Call .format() before creating archive.');
+    }
+  }
+
+  /**
+   * Get the source stream
+   */
+  private async getSourceStream(): Promise<plugins.stream.Readable> {
+    if (this.archiveBuffer) {
+      return plugins.stream.Readable.from(this.archiveBuffer);
+    }
+    if (this.sourceStream) {
+      return this.sourceStream;
+    }
+    if (this.sourceUrl) {
+      const response = await plugins.smartrequest.SmartRequest.create()
+        .url(this.sourceUrl)
+        .get();
+      const webStream = response.stream();
+      return plugins.stream.Readable.fromWeb(webStream as any);
+    }
+    if (this.sourceFilePath) {
+      return plugins.fs.createReadStream(this.sourceFilePath);
+    }
+    throw new Error('No archive source configured');
+  }
+
+  /**
+   * Build a combined filter function from all configured filters
+   */
+  private buildFilterFunction(): TEntryFilter | undefined {
+    const hasFilters =
+      this._filters.length > 0 ||
+      this._includePatterns.length > 0 ||
+      this._excludePatterns.length > 0;
+
+    if (!hasFilters) {
+      return undefined;
+    }
+
+    return (entry: IArchiveEntryInfo) => {
+      // Check include patterns (if any specified, at least one must match)
+      if (this._includePatterns.length > 0) {
+        const included = this._includePatterns.some((p) => p.test(entry.path));
+        if (!included) return false;
+      }
+
+      // Check exclude patterns (none must match)
+      for (const pattern of this._excludePatterns) {
+        if (pattern.test(entry.path)) return false;
+      }
+
+      // Check custom filters (all must pass)
+      for (const filter of this._filters) {
+        if (!filter(entry)) return false;
+      }
+
+      return true;
+    };
+  }
+
+  /**
+   * Resolve pending directories to entries
+   */
+  private async resolveDirectories(): Promise<void> {
+    for (const dir of this.pendingDirectories) {
+      const files = await plugins.listFileTree(dir.sourcePath, '**/*');
+      for (const filePath of files) {
+        const archivePath = dir.archiveBase
+          ? plugins.path.join(dir.archiveBase, filePath)
+          : filePath;
+        const absolutePath = plugins.path.join(dir.sourcePath, filePath);
+        const content = await plugins.fsPromises.readFile(absolutePath);
+        this.pendingEntries.push({
+          archivePath,
+          content,
+        });
+      }
+    }
+    this.pendingDirectories = [];
+  }
+
+  /**
+   * Get entries filtered by include/exclude patterns
+   */
+  private getFilteredEntries(): IArchiveEntry[] {
+    const filterFn = this.buildFilterFunction();
+    if (!filterFn) {
+      return this.pendingEntries;
+    }
+
+    return this.pendingEntries.filter((entry) =>
+      filterFn({
+        path: entry.archivePath,
+        size: 0,
+        isDirectory: false,
+        isFile: true,
+      })
+    );
+  }
+
+  /**
+   * Convert a stream to buffer
+   */
+  private async streamToBuffer(stream: plugins.stream.Readable): Promise<Buffer> {
+    const chunks: Buffer[] = [];
+    return new Promise((resolve, reject) => {
+      stream.on('data', (chunk) => chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)));
+      stream.on('end', () => resolve(Buffer.concat(chunks)));
+      stream.on('error', reject);
+    });
+  }
+
+  /**
+   * Read first chunk from stream
+   */
+  private async readFirstChunk(stream: plugins.stream.Readable): Promise<Buffer> {
+    return new Promise((resolve, reject) => {
+      const onData = (chunk: Buffer) => {
+        stream.removeListener('data', onData);
+        stream.removeListener('error', reject);
+        resolve(chunk);
+      };
+      stream.on('data', onData);
+      stream.on('error', reject);
+    });
+  }
 }
--- a/ts/classes.tartools.ts
+++ b/ts/classes.tartools.ts
@@ -1,15 +1,14 @@
-import type { SmartArchive } from './classes.smartarchive.js';
 import * as plugins from './plugins.js';
+import type { IArchiveEntry, TCompressionLevel } from './interfaces.js';
+import { GzipTools } from './classes.gziptools.js';

+/**
+ * TAR archive creation and extraction utilities
+ */
 export class TarTools {
-  // INSTANCE
-  smartArchiveRef: SmartArchive;
-
-  constructor(smartArchiveRefArg: SmartArchive) {
-    this.smartArchiveRef = smartArchiveRefArg;
-  }
-
-  // packing
+  /**
+   * Add a file to a TAR pack stream
+   */
  public async addFileToPack(
    pack: plugins.tarStream.Pack,
    optionsArg: {
@@ -17,7 +16,7 @@ export class TarTools {
      content?:
        | string
        | Buffer
-        | plugins.smartstream.stream.Readable
+        | plugins.stream.Readable
        | plugins.smartfile.SmartFile
        | plugins.smartfile.StreamFile;
      byteLength?: number;
@@ -25,17 +24,25 @@ export class TarTools {
    }
  ): Promise<void> {
    return new Promise<void>(async (resolve, reject) => {
-      let fileName =
-        optionsArg.fileName || optionsArg.content instanceof plugins.smartfile.SmartFile
-          ? (optionsArg.content as plugins.smartfile.SmartFile).relative
-          : null || optionsArg.content instanceof plugins.smartfile.StreamFile
-          ? (optionsArg.content as plugins.smartfile.StreamFile).relativeFilePath
-          : null || optionsArg.filePath;
+      let fileName: string | null = null;

-      /**
-       * contentByteLength is used to set the size of the entry in the tar file
-       */
-      let contentByteLength: number;
+      if (optionsArg.fileName) {
+        fileName = optionsArg.fileName;
+      } else if (optionsArg.content instanceof plugins.smartfile.SmartFile) {
+        fileName = optionsArg.content.relative;
+      } else if (optionsArg.content instanceof plugins.smartfile.StreamFile) {
+        fileName = optionsArg.content.relativeFilePath;
+      } else if (optionsArg.filePath) {
+        fileName = optionsArg.filePath;
+      }
+
+      if (!fileName) {
+        reject(new Error('No filename specified for TAR entry'));
+        return;
+      }
+
+      // Determine content byte length
+      let contentByteLength: number | undefined;
      if (optionsArg.byteLength) {
        contentByteLength = optionsArg.byteLength;
      } else if (typeof optionsArg.content === 'string') {
@@ -43,28 +50,39 @@ export class TarTools {
      } else if (Buffer.isBuffer(optionsArg.content)) {
        contentByteLength = optionsArg.content.length;
      } else if (optionsArg.content instanceof plugins.smartfile.SmartFile) {
-        contentByteLength = await optionsArg.content.getSize(); // assuming SmartFile has getSize method
+        contentByteLength = await optionsArg.content.getSize();
      } else if (optionsArg.content instanceof plugins.smartfile.StreamFile) {
-        contentByteLength = await optionsArg.content.getSize(); // assuming StreamFile has getSize method
-      } else if (optionsArg.content instanceof plugins.smartstream.stream.Readable) {
-        console.warn(
-          '@push.rocks/smartarchive: When streaming, it is recommended to provide byteLength, if known.'
-        );
+        contentByteLength = await optionsArg.content.getSize();
      } else if (optionsArg.filePath) {
-        const fileStat = await plugins.smartfile.fs.stat(optionsArg.filePath);
+        const fileStat = await plugins.fsPromises.stat(optionsArg.filePath);
        contentByteLength = fileStat.size;
      }

+      // Convert all content types to Readable stream
+      let content: plugins.stream.Readable;
+      if (Buffer.isBuffer(optionsArg.content)) {
+        content = plugins.stream.Readable.from(optionsArg.content);
+      } else if (typeof optionsArg.content === 'string') {
+        content = plugins.stream.Readable.from(Buffer.from(optionsArg.content));
+      } else if (optionsArg.content instanceof plugins.smartfile.SmartFile) {
+        content = plugins.stream.Readable.from(optionsArg.content.contents);
+      } else if (optionsArg.content instanceof plugins.smartfile.StreamFile) {
+        content = await optionsArg.content.createReadStream();
+      } else if (optionsArg.content instanceof plugins.stream.Readable) {
+        content = optionsArg.content;
+      } else if (optionsArg.filePath) {
+        content = plugins.fs.createReadStream(optionsArg.filePath);
+      } else {
+        reject(new Error('No content or filePath specified for TAR entry'));
+        return;
+      }
+
      const entry = pack.entry(
        {
          name: fileName,
-          ...(contentByteLength
-            ? {
-                size: contentByteLength,
-              }
-            : null),
+          ...(contentByteLength !== undefined ? { size: contentByteLength } : {}),
        },
-        (err: Error) => {
+        (err: Error | null) => {
          if (err) {
            reject(err);
          } else {
@@ -73,52 +91,118 @@ export class TarTools {
        }
      );

-      let content: plugins.smartstream.stream.Readable;
-      if (Buffer.isBuffer(optionsArg.content)) {
-        content = plugins.smartstream.stream.Readable.from(optionsArg.content);
-      } else if (typeof optionsArg.content === 'string') {
-        content = plugins.smartstream.stream.Readable.from(Buffer.from(optionsArg.content));
-      } else if (optionsArg.content instanceof plugins.smartfile.SmartFile) {
-        content = plugins.smartstream.stream.Readable.from(optionsArg.content.contents);
-      } else if (optionsArg.content instanceof plugins.smartfile.StreamFile) {
-        content = await optionsArg.content.createReadStream();
-      } else if (optionsArg.content instanceof plugins.smartstream.stream.Readable) {
-        content = optionsArg.content;
-      }
-
      content.pipe(entry);
-      entry.on('end', () => {
-        resolve();
-      });
+      // Note: resolve() is called in the callback above when pipe completes
    });
  }

  /**
-   * packs a directory from disk into a tar stream
-   * @param directoryPath
+   * Pack a directory into a TAR stream
   */
-  public async packDirectory(directoryPath: string) {
-    const fileTree = await plugins.smartfile.fs.listFileTree(directoryPath, '**/*');
+  public async packDirectory(directoryPath: string): Promise<plugins.tarStream.Pack> {
+    const fileTree = await plugins.listFileTree(directoryPath, '**/*');
    const pack = await this.getPackStream();
+
    for (const filePath of fileTree) {
      const absolutePath = plugins.path.join(directoryPath, filePath);
-      const fileStat = await plugins.smartfile.fs.stat(absolutePath);
+      const fileStat = await plugins.fsPromises.stat(absolutePath);
      await this.addFileToPack(pack, {
        byteLength: fileStat.size,
-        filePath: filePath,
+        filePath: absolutePath,
        fileName: filePath,
-        content: plugins.smartfile.fsStream.createReadStream(absolutePath),
+        content: plugins.fs.createReadStream(absolutePath),
      });
    }
-  }

-  public async getPackStream() {
-    const pack = plugins.tarStream.pack();
    return pack;
  }

-  // extracting
-  getDecompressionStream() {
+  /**
+   * Get a new TAR pack stream
+   */
+  public async getPackStream(): Promise<plugins.tarStream.Pack> {
+    return plugins.tarStream.pack();
+  }
+
+  /**
+   * Get a TAR extraction stream
+   */
+  public getDecompressionStream(): plugins.tarStream.Extract {
    return plugins.tarStream.extract();
  }
+
+  /**
+   * Pack files into a TAR buffer
+   */
+  public async packFiles(files: IArchiveEntry[]): Promise<Buffer> {
+    const pack = await this.getPackStream();
+
+    for (const file of files) {
+      await this.addFileToPack(pack, {
+        fileName: file.archivePath,
+        content: file.content as string | Buffer | plugins.stream.Readable | plugins.smartfile.SmartFile | plugins.smartfile.StreamFile,
+        byteLength: file.size,
+      });
+    }
+
+    pack.finalize();
+
+    const chunks: Buffer[] = [];
+    return new Promise((resolve, reject) => {
+      pack.on('data', (chunk: Buffer) => chunks.push(chunk));
+      pack.on('end', () => resolve(Buffer.concat(chunks)));
+      pack.on('error', reject);
+    });
+  }
+
+  /**
+   * Pack a directory into a TAR.GZ buffer
+   */
+  public async packDirectoryToTarGz(
+    directoryPath: string,
+    compressionLevel?: TCompressionLevel
+  ): Promise<Buffer> {
+    const pack = await this.packDirectory(directoryPath);
+    pack.finalize();
+
+    const gzipTools = new GzipTools();
+    const gzipStream = gzipTools.getCompressionStream(compressionLevel);
+
+    const chunks: Buffer[] = [];
+    return new Promise((resolve, reject) => {
+      pack
+        .pipe(gzipStream)
+        .on('data', (chunk: Buffer) => chunks.push(chunk))
+        .on('end', () => resolve(Buffer.concat(chunks)))
+        .on('error', reject);
+    });
+  }
+
+  /**
+   * Pack a directory into a TAR.GZ stream
+   */
+  public async packDirectoryToTarGzStream(
+    directoryPath: string,
+    compressionLevel?: TCompressionLevel
+  ): Promise<plugins.stream.Readable> {
+    const pack = await this.packDirectory(directoryPath);
+    pack.finalize();
+
+    const gzipTools = new GzipTools();
+    const gzipStream = gzipTools.getCompressionStream(compressionLevel);
+
+    return pack.pipe(gzipStream);
+  }
+
+  /**
+   * Pack files into a TAR.GZ buffer
+   */
+  public async packFilesToTarGz(
+    files: IArchiveEntry[],
+    compressionLevel?: TCompressionLevel
+  ): Promise<Buffer> {
+    const tarBuffer = await this.packFiles(files);
+    const gzipTools = new GzipTools();
+    return gzipTools.compress(tarBuffer, compressionLevel);
+  }
 }
--- a/ts/classes.ziptools.ts
+++ b/ts/classes.ziptools.ts
@@ -1,77 +1,196 @@
-import type { SmartArchive } from './classes.smartarchive.js';
 import * as plugins from './plugins.js';
+import type { IArchiveEntry, TCompressionLevel } from './interfaces.js';

-class DecompressZipTransform extends plugins.smartstream.SmartDuplex<ArrayBufferLike> {
-  private streamtools: plugins.smartstream.IStreamTools;
+/**
+ * Transform stream for ZIP decompression using fflate
+ * Emits StreamFile objects for each file in the archive
+ */
+export class ZipDecompressionTransform extends plugins.smartstream.SmartDuplex<Buffer, plugins.smartfile.StreamFile> {
+  private streamtools!: plugins.smartstream.IStreamTools;
  private unzipper = new plugins.fflate.Unzip(async (fileArg) => {
    let resultBuffer: Buffer;
-    fileArg.ondata = async (flateError, dat, final) => {
-      resultBuffer? resultBuffer = Buffer.concat([resultBuffer, Buffer.from(dat)])
-        : resultBuffer = Buffer.from(dat);
+    fileArg.ondata = async (_flateError, dat, final) => {
+      resultBuffer
+        ? (resultBuffer = Buffer.concat([resultBuffer, Buffer.from(dat)]))
+        : (resultBuffer = Buffer.from(dat));
      if (final) {
        const streamFile = plugins.smartfile.StreamFile.fromBuffer(resultBuffer);
        streamFile.relativeFilePath = fileArg.name;
        this.streamtools.push(streamFile);
      }
-    }
+    };
    fileArg.start();
  });
+
  constructor() {
    super({
      objectMode: true,
-      writeFunction: async (chunkArg: Buffer, streamtoolsArg) => {
-        this.streamtools? null : this.streamtools = streamtoolsArg;
-        this.unzipper.push(chunkArg, false);
+      writeFunction: async (chunkArg, streamtoolsArg) => {
+        this.streamtools ? null : (this.streamtools = streamtoolsArg);
+        this.unzipper.push(
+          Buffer.isBuffer(chunkArg) ? chunkArg : Buffer.from(chunkArg as unknown as ArrayBuffer),
+          false
+        );
+        return null;
      },
      finalFunction: async () => {
        this.unzipper.push(Buffer.from(''), true);
        await plugins.smartdelay.delayFor(0);
        await this.streamtools.push(null);
-      }
+        return null;
+      },
    });
    this.unzipper.register(plugins.fflate.UnzipInflate);
  }
 }

-// This class wraps fflate's zip in a Node.js Transform stream for compression
-export class CompressZipTransform extends plugins.stream.Transform {
-  files: { [fileName: string]: Uint8Array };
+/**
+ * Streaming ZIP compression using fflate
+ * Allows adding multiple entries before finalizing
+ */
+export class ZipCompressionStream extends plugins.stream.Duplex {
+  private files: Map<string, { data: Uint8Array; options?: plugins.fflate.ZipOptions }> = new Map();
+  private finalized = false;

  constructor() {
    super();
-    this.files = {};
  }

-  _transform(chunk: Buffer, encoding: BufferEncoding, callback: plugins.stream.TransformCallback) {
-    // Simple example: storing chunks in memory before finalizing ZIP in _flush
-    this.files['file.txt'] = new Uint8Array(chunk);
-    callback();
-  }
+  /**
+   * Add a file entry to the ZIP archive
+   */
+  public async addEntry(
+    fileName: string,
+    content: Buffer | plugins.stream.Readable,
+    options?: { compressionLevel?: TCompressionLevel }
+  ): Promise<void> {
+    if (this.finalized) {
+      throw new Error('Cannot add entries to a finalized ZIP archive');
+    }

-  _flush(callback: plugins.stream.TransformCallback) {
-    plugins.fflate.zip(this.files, (err, zipped) => {
-      if (err) {
-        callback(err);
-      } else {
-        this.push(Buffer.from(zipped));
-        callback();
+    let data: Buffer;
+    if (Buffer.isBuffer(content)) {
+      data = content;
+    } else {
+      // Collect stream to buffer
+      const chunks: Buffer[] = [];
+      for await (const chunk of content) {
+        chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk));
      }
+      data = Buffer.concat(chunks);
+    }
+
+    this.files.set(fileName, {
+      data: new Uint8Array(data),
+      options: options?.compressionLevel !== undefined ? { level: options.compressionLevel } : undefined,
    });
  }
+
+  /**
+   * Finalize the ZIP archive and emit the compressed data
+   */
+  public async finalize(): Promise<void> {
+    if (this.finalized) {
+      return;
+    }
+    this.finalized = true;
+
+    const filesObj: plugins.fflate.Zippable = {};
+    for (const [name, { data, options }] of this.files) {
+      filesObj[name] = options ? [data, options] : data;
+    }
+
+    // Use sync version for Deno compatibility (fflate async uses Web Workers)
+    try {
+      const result = plugins.fflate.zipSync(filesObj);
+      this.push(Buffer.from(result));
+      this.push(null);
+    } catch (err) {
+      throw err;
+    }
+  }
+
+  _read(): void {
+    // No-op: data is pushed when finalize() is called
+  }
+
+  _write(
+    _chunk: Buffer,
+    _encoding: BufferEncoding,
+    callback: (error?: Error | null) => void
+  ): void {
+    // Not used for ZIP creation - use addEntry() instead
+    callback(new Error('Use addEntry() to add files to the ZIP archive'));
+  }
 }

+/**
+ * ZIP compression and decompression utilities
+ */
 export class ZipTools {
-  smartArchiveRef: SmartArchive;
-
-  constructor(smartArchiveRefArg: SmartArchive) {
-    this.smartArchiveRef = smartArchiveRefArg;
+  /**
+   * Get a streaming compression object for creating ZIP archives
+   */
+  public getCompressionStream(): ZipCompressionStream {
+    return new ZipCompressionStream();
  }

-  public getCompressionStream() {
-    return new CompressZipTransform();
+  /**
+   * Get a streaming decompression transform for extracting ZIP archives
+   */
+  public getDecompressionStream(): ZipDecompressionTransform {
+    return new ZipDecompressionTransform();
  }

-  public getDecompressionStream() {
-    return new DecompressZipTransform();
+  /**
+   * Create a ZIP archive from an array of entries
+   */
+  public async createZip(entries: IArchiveEntry[], compressionLevel?: TCompressionLevel): Promise<Buffer> {
+    const filesObj: plugins.fflate.Zippable = {};
+
+    for (const entry of entries) {
+      let data: Uint8Array;
+
+      if (typeof entry.content === 'string') {
+        data = new TextEncoder().encode(entry.content);
+      } else if (Buffer.isBuffer(entry.content)) {
+        data = new Uint8Array(entry.content);
+      } else if (entry.content instanceof plugins.smartfile.SmartFile) {
+        data = new Uint8Array(entry.content.contents);
+      } else if (entry.content instanceof plugins.smartfile.StreamFile) {
+        const buffer = await entry.content.getContentAsBuffer();
+        data = new Uint8Array(buffer);
+      } else {
+        // Readable stream
+        const chunks: Buffer[] = [];
+        for await (const chunk of entry.content as plugins.stream.Readable) {
+          chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk));
+        }
+        data = new Uint8Array(Buffer.concat(chunks));
+      }
+
+      if (compressionLevel !== undefined) {
+        filesObj[entry.archivePath] = [data, { level: compressionLevel }];
+      } else {
+        filesObj[entry.archivePath] = data;
+      }
+    }
+
+    // Use sync version for Deno compatibility (fflate async uses Web Workers)
+    const result = plugins.fflate.zipSync(filesObj);
+    return Buffer.from(result);
+  }
+
+  /**
+   * Extract a ZIP buffer to an array of entries
+   */
+  public async extractZip(data: Buffer): Promise<Array<{ path: string; content: Buffer }>> {
+    // Use sync version for Deno compatibility (fflate async uses Web Workers)
+    const result = plugins.fflate.unzipSync(data);
+    const entries: Array<{ path: string; content: Buffer }> = [];
+    for (const [path, content] of Object.entries(result)) {
+      entries.push({ path, content: Buffer.from(content) });
+    }
+    return entries;
  }
 }
--- a/ts/errors.ts
+++ b/ts/errors.ts
@@ -0,0 +1,70 @@
+/**
+ * Base error class for smartarchive
+ */
+export class SmartArchiveError extends Error {
+  public readonly code: string;
+
+  constructor(message: string, code: string) {
+    super(message);
+    this.name = 'SmartArchiveError';
+    this.code = code;
+    // Maintains proper stack trace for where error was thrown (V8)
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, this.constructor);
+    }
+  }
+}
+
+/**
+ * BZIP2-specific decompression errors
+ */
+export class Bzip2Error extends SmartArchiveError {
+  constructor(message: string, code: string = 'BZIP2_ERROR') {
+    super(message, code);
+    this.name = 'Bzip2Error';
+  }
+}
+
+/**
+ * Archive format detection errors
+ */
+export class ArchiveFormatError extends SmartArchiveError {
+  constructor(message: string) {
+    super(message, 'ARCHIVE_FORMAT_ERROR');
+    this.name = 'ArchiveFormatError';
+  }
+}
+
+/**
+ * Stream processing errors
+ */
+export class StreamError extends SmartArchiveError {
+  constructor(message: string) {
+    super(message, 'STREAM_ERROR');
+    this.name = 'StreamError';
+  }
+}
+
+/**
+ * BZIP2 error codes for programmatic error handling
+ */
+export const BZIP2_ERROR_CODES = {
+  NO_MAGIC_NUMBER: 'BZIP2_NO_MAGIC',
+  INVALID_ARCHIVE: 'BZIP2_INVALID_ARCHIVE',
+  CRC_MISMATCH: 'BZIP2_CRC_MISMATCH',
+  INVALID_BLOCK_DATA: 'BZIP2_INVALID_BLOCK',
+  BUFFER_OVERFLOW: 'BZIP2_BUFFER_OVERFLOW',
+  INVALID_HUFFMAN: 'BZIP2_INVALID_HUFFMAN',
+  INVALID_SELECTOR: 'BZIP2_INVALID_SELECTOR',
+  INVALID_POSITION: 'BZIP2_INVALID_POSITION',
+  PREMATURE_END: 'BZIP2_PREMATURE_END',
+} as const;
+
+export type TBzip2ErrorCode = typeof BZIP2_ERROR_CODES[keyof typeof BZIP2_ERROR_CODES];
+
+/**
+ * Throw a BZIP2 error with a specific code
+ */
+export function throwBzip2Error(message: string, code: TBzip2ErrorCode): never {
+  throw new Bzip2Error(message, code);
+}
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1 +1,15 @@
+// Core types and errors
+export * from './interfaces.js';
+export * from './errors.js';
+
+// Main archive class
 export * from './classes.smartarchive.js';
+
+// Format-specific tools
+export * from './classes.tartools.js';
+export * from './classes.ziptools.js';
+export * from './classes.gziptools.js';
+export * from './classes.bzip2tools.js';
+
+// Archive analysis
+export * from './classes.archiveanalyzer.js';
--- a/ts/interfaces.ts
+++ b/ts/interfaces.ts
@@ -0,0 +1,136 @@
+import type * as stream from 'node:stream';
+import type { SmartFile, StreamFile } from '@push.rocks/smartfile';
+
+/**
+ * Supported archive formats
+ */
+export type TArchiveFormat = 'tar' | 'tar.gz' | 'tgz' | 'zip' | 'gz' | 'bz2';
+
+/**
+ * Compression level (0 = no compression, 9 = maximum compression)
+ */
+export type TCompressionLevel = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
+
+/**
+ * Supported MIME types for archive detection
+ */
+export type TSupportedMime =
+  | 'application/gzip'
+  | 'application/zip'
+  | 'application/x-bzip2'
+  | 'application/x-tar'
+  | undefined;
+
+/**
+ * Entry to add to an archive during creation
+ */
+export interface IArchiveEntry {
+  /** Path within the archive */
+  archivePath: string;
+  /** Content: string, Buffer, Readable stream, SmartFile, or StreamFile */
+  content: string | Buffer | stream.Readable | SmartFile | StreamFile;
+  /** Optional size hint for streams (improves performance) */
+  size?: number;
+  /** Optional file mode/permissions */
+  mode?: number;
+  /** Optional modification time */
+  mtime?: Date;
+}
+
+/**
+ * Options for creating archives
+ */
+export interface IArchiveCreationOptions {
+  /** Target archive format */
+  format: TArchiveFormat;
+  /** Compression level (0-9, default depends on format) */
+  compressionLevel?: TCompressionLevel;
+  /** Base path to strip from file paths in archive */
+  basePath?: string;
+}
+
+/**
+ * Options for extracting archives
+ */
+export interface IArchiveExtractionOptions {
+  /** Target directory for extraction */
+  targetDir: string;
+  /** Optional filename for single-file archives (gz, bz2) */
+  fileName?: string;
+  /** Number of leading path components to strip */
+  stripComponents?: number;
+  /** Filter function to select which entries to extract */
+  filter?: (entry: IArchiveEntryInfo) => boolean;
+  /** Whether to overwrite existing files */
+  overwrite?: boolean;
+}
+
+/**
+ * Information about an archive entry
+ */
+export interface IArchiveEntryInfo {
+  /** Path of the entry within the archive */
+  path: string;
+  /** Size in bytes */
+  size: number;
+  /** Whether this entry is a directory */
+  isDirectory: boolean;
+  /** Whether this entry is a file */
+  isFile: boolean;
+  /** Modification time */
+  mtime?: Date;
+  /** File mode/permissions */
+  mode?: number;
+}
+
+/**
+ * Result of archive analysis
+ */
+export interface IArchiveInfo {
+  /** Detected archive format */
+  format: TArchiveFormat | null;
+  /** Whether the archive is compressed */
+  isCompressed: boolean;
+  /** Whether this is a recognized archive format */
+  isArchive: boolean;
+  /** List of entries (if available without full extraction) */
+  entries?: IArchiveEntryInfo[];
+}
+
+/**
+ * Options for adding a file to a TAR pack stream
+ */
+export interface IAddFileOptions {
+  /** Filename within the archive */
+  fileName?: string;
+  /** File content */
+  content?: string | Buffer | stream.Readable | SmartFile | StreamFile;
+  /** Size in bytes (required for streams) */
+  byteLength?: number;
+  /** Path to file on disk (alternative to content) */
+  filePath?: string;
+}
+
+/**
+ * Bit reader interface for BZIP2 decompression
+ */
+export interface IBitReader {
+  (n: number | null): number | void;
+  bytesRead: number;
+}
+
+/**
+ * Huffman group for BZIP2 decompression
+ */
+export interface IHuffmanGroup {
+  permute: Int32Array;
+  limit: Int32Array;
+  base: Int32Array;
+  minLen: number;
+  maxLen: number;
+}
+
+/**
+ * Entry filter predicate for fluent API
+ */
+export type TEntryFilter = (entry: IArchiveEntryInfo) => boolean;
--- a/ts/paths.ts
+++ b/ts/paths.ts
@@ -2,6 +2,6 @@ import * as plugins from './plugins.js';

 export const packageDir = plugins.path.join(
  plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url),
-  '../'
+  '../',
 );
 export const nogitDir = plugins.path.join(packageDir, './.nogit');
--- a/ts/plugins.ts
+++ b/ts/plugins.ts
@@ -1,8 +1,34 @@
 // node native scope
-import * as path from 'path';
-import * as stream from 'stream';
+import * as path from 'node:path';
+import * as stream from 'node:stream';
+import * as fs from 'node:fs';
+import * as fsPromises from 'node:fs/promises';

-export { path, stream };
+export { path, stream, fs, fsPromises };
+
+/**
+ * List files in a directory recursively, returning relative paths
+ */
+export async function listFileTree(dirPath: string, _pattern: string = '**/*'): Promise<string[]> {
+  const results: string[] = [];
+
+  async function walkDir(currentPath: string, relativePath: string = '') {
+    const entries = await fsPromises.readdir(currentPath, { withFileTypes: true });
+    for (const entry of entries) {
+      const entryRelPath = relativePath ? path.join(relativePath, entry.name) : entry.name;
+      const entryFullPath = path.join(currentPath, entry.name);
+
+      if (entry.isDirectory()) {
+        await walkDir(entryFullPath, entryRelPath);
+      } else if (entry.isFile()) {
+        results.push(entryRelPath);
+      }
+    }
+  }
+
+  await walkDir(dirPath);
+  return results;
+}

 // @pushrocks scope
 import * as smartfile from '@push.rocks/smartfile';
@@ -15,7 +41,17 @@ import * as smartstream from '@push.rocks/smartstream';
 import * as smartrx from '@push.rocks/smartrx';
 import * as smarturl from '@push.rocks/smarturl';

-export { smartfile, smartdelay, smartpath, smartpromise, smartrequest, smartunique, smartstream, smartrx, smarturl };
+export {
+  smartfile,
+  smartdelay,
+  smartpath,
+  smartpromise,
+  smartrequest,
+  smartunique,
+  smartstream,
+  smartrx,
+  smarturl,
+};

 // third party scope
 import * as fileType from 'file-type';
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,9 +6,9 @@
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "esModuleInterop": true,
-    "verbatimModuleSyntax": true
+    "verbatimModuleSyntax": true,
+    "baseUrl": ".",
+    "paths": {}
  },
-  "exclude": [
-    "dist_*/**/*.d.ts"
-  ]
+  "exclude": ["dist_*/**/*.d.ts"]
 }
Author	SHA1	Message	Date
Juergen Kunz	4e3c5a8443	v5.0.1	2025-11-25 13:37:27 +00:00
Juergen Kunz	11bbddc763	fix(ziptools,gziptools): Use fflate synchronous APIs for ZIP and GZIP operations for Deno compatibility; add TEntryFilter type and small docs/tests cleanup	2025-11-25 13:37:27 +00:00
Juergen Kunz	5cc030d433	v5.0.0	2025-11-25 12:32:13 +00:00
Juergen Kunz	2b91c1586c	BREAKING CHANGE(SmartArchive): Refactor public API: rename factory/extraction methods, introduce typed interfaces and improved compression tools	2025-11-25 12:32:13 +00:00
Juergen Kunz	e609c023bc	v4.2.4	2025-11-25 11:59:11 +00:00
Juergen Kunz	634c204a00	fix(plugins): Migrate filesystem usage to Node fs/fsPromises and upgrade smartfile to v13; add listFileTree helper and update tests	2025-11-25 11:59:11 +00:00
Juergen Kunz	7ccd210c45	v4.2.3	2025-11-25 11:28:31 +00:00
Juergen Kunz	fe90de56d6	fix(build): Upgrade dev tooling: bump @git.zone/tsbuild, @git.zone/tsrun and @git.zone/tstest versions	2025-11-25 11:28:31 +00:00
Juergen Kunz	d9251fa1a5	4.2.2	2025-08-18 02:06:31 +00:00
Juergen Kunz	ec58b9cdc5	fix(smartarchive): Improve tar entry streaming handling and add in-memory gzip/tgz tests	2025-08-18 02:06:31 +00:00
Juergen Kunz	9dbb7d9731	4.2.1	2025-08-18 01:52:21 +00:00
Juergen Kunz	4428638170	fix(gzip): Improve gzip streaming decompression, archive analysis and unpacking; add gzip tests	2025-08-18 01:52:20 +00:00
Juergen Kunz	1af585594c	4.2.0	2025-08-18 01:29:06 +00:00
Juergen Kunz	780db4921e	feat(classes.smartarchive): Support URL streams, recursive archive unpacking and filesystem export; improve ZIP/GZIP/BZIP2 robustness; CI and package metadata updates	2025-08-18 01:29:06 +00:00
Juergen Kunz	ed5f590b5f	4.1.0	2025-08-18 01:01:02 +00:00
Juergen Kunz	a32ed0facd	feat(classes.smartarchive): Support URL web streams, add recursive archive unpacking and filesystem export, and improve ZIP decompression robustness	2025-08-18 01:01:02 +00:00
Juergen Kunz	b5a3793ed5	fix: update import path for tapbundle and refactor download logic - Changed the import path for tapbundle from '@push.rocks/tapbundle' to '@git.zone/tstest/tapbundle'. - Refactored the download logic in the preTask for preparing downloads to use SmartRequest for better handling of the response. - Added a new pnpm workspace configuration file to specify only built dependencies.	2025-08-18 00:47:24 +00:00
Philipp Kunz	be1bc958d8	4.0.39	2024-10-13 13:25:52 +02:00
Philipp Kunz	21434622dd	fix(core): Fix dependencies and update documentation.	2024-10-13 13:25:52 +02:00
Philipp Kunz	50c0368ac7	4.0.38	2024-10-13 13:24:06 +02:00
Philipp Kunz	78b3fcfd83	fix(dependencies): Update dependencies to latest versions	2024-10-13 13:24:05 +02:00
Philipp Kunz	61caf51f4e	4.0.37	2024-06-08 14:48:25 +02:00
Philipp Kunz	be4e2cdae7	fix(core): update	2024-06-08 14:48:24 +02:00
Philipp Kunz	1cb8331666	4.0.36	2024-06-08 14:01:26 +02:00
Philipp Kunz	aa203c5ab2	fix(core): update	2024-06-08 14:01:25 +02:00
Philipp Kunz	87aedd5ef5	4.0.35	2024-06-08 14:00:56 +02:00
Philipp Kunz	64431703b5	fix(core): update	2024-06-08 14:00:55 +02:00
Philipp Kunz	120fd0b321	4.0.34	2024-06-08 13:47:39 +02:00
Philipp Kunz	e6192c418e	fix(core): update	2024-06-08 13:47:38 +02:00
Philipp Kunz	00a039936f	4.0.33	2024-06-08 12:49:03 +02:00
Philipp Kunz	e03c3a62b1	fix(core): update	2024-06-08 12:49:02 +02:00
Philipp Kunz	538eced73b	4.0.32	2024-06-08 12:46:44 +02:00
Philipp Kunz	fe8a5713f0	fix(core): update	2024-06-08 12:46:43 +02:00
Philipp Kunz	37e8a1d0f7	4.0.31	2024-06-08 12:44:41 +02:00
Philipp Kunz	5143cd098d	fix(core): update	2024-06-08 12:44:40 +02:00
Philipp Kunz	4d5ea812af	4.0.30	2024-06-08 12:40:57 +02:00
Philipp Kunz	500ef01ded	fix(core): update	2024-06-08 12:40:56 +02:00
Philipp Kunz	3196a02835	4.0.29	2024-06-08 11:06:10 +02:00
Philipp Kunz	de1c46ed0a	fix(core): update	2024-06-08 11:06:09 +02:00
Philipp Kunz	b4c7b065fa	4.0.28	2024-06-08 11:03:38 +02:00
Philipp Kunz	93da11a951	fix(core): update	2024-06-08 11:03:37 +02:00
Philipp Kunz	ecd7f6d419	4.0.27	2024-06-08 11:01:56 +02:00
Philipp Kunz	a3ecfe4d99	fix(core): update	2024-06-08 11:01:56 +02:00
Philipp Kunz	f99f6d96c5	4.0.26	2024-06-08 10:47:28 +02:00
Philipp Kunz	b4be70f43a	fix(core): update	2024-06-08 10:47:27 +02:00