v5.0.0

- 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.

.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

.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

.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

.serena/project.yml

@@ -0,0 +1,68 @@
+# language of the project (csharp, python, rust, java, typescript, go, cpp, or ruby)
+#  * For C, use cpp
+#  * For JavaScript, use typescript
+# Special requirements:
+#  * csharp: Requires the presence of a .sln file in the project folder.
+language: typescript
+
+# whether to use the project's gitignore file to ignore files
+# Added on 2025-04-07
+ignore_all_files_in_gitignore: true
+# list of additional paths to ignore
+# same syntax as gitignore, so you can use * and **
+# Was previously called `ignored_dirs`, please update your config if you are using that.
+# Added (renamed) on 2025-04-07
+ignored_paths: []
+
+# whether the project is in read-only mode
+# If set to true, all editing tools will be disabled and attempts to use them will result in an error
+# Added on 2025-04-18
+read_only: false
+
+
+# list of tool names to exclude. We recommend not excluding any tools, see the readme for more details.
+# Below is the complete list of tools for convenience.
+# To make sure you have the latest list of tools, and to view their descriptions, 
+# execute `uv run scripts/print_tool_overview.py`.
+#
+#  * `activate_project`: Activates a project by name.
+#  * `check_onboarding_performed`: Checks whether project onboarding was already performed.
+#  * `create_text_file`: Creates/overwrites a file in the project directory.
+#  * `delete_lines`: Deletes a range of lines within a file.
+#  * `delete_memory`: Deletes a memory from Serena's project-specific memory store.
+#  * `execute_shell_command`: Executes a shell command.
+#  * `find_referencing_code_snippets`: Finds code snippets in which the symbol at the given location is referenced.
+#  * `find_referencing_symbols`: Finds symbols that reference the symbol at the given location (optionally filtered by type).
+#  * `find_symbol`: Performs a global (or local) search for symbols with/containing a given name/substring (optionally filtered by type).
+#  * `get_current_config`: Prints the current configuration of the agent, including the active and available projects, tools, contexts, and modes.
+#  * `get_symbols_overview`: Gets an overview of the top-level symbols defined in a given file.
+#  * `initial_instructions`: Gets the initial instructions for the current project.
+#     Should only be used in settings where the system prompt cannot be set,
+#     e.g. in clients you have no control over, like Claude Desktop.
+#  * `insert_after_symbol`: Inserts content after the end of the definition of a given symbol.
+#  * `insert_at_line`: Inserts content at a given line in a file.
+#  * `insert_before_symbol`: Inserts content before the beginning of the definition of a given symbol.
+#  * `list_dir`: Lists files and directories in the given directory (optionally with recursion).
+#  * `list_memories`: Lists memories in Serena's project-specific memory store.
+#  * `onboarding`: Performs onboarding (identifying the project structure and essential tasks, e.g. for testing or building).
+#  * `prepare_for_new_conversation`: Provides instructions for preparing for a new conversation (in order to continue with the necessary context).
+#  * `read_file`: Reads a file within the project directory.
+#  * `read_memory`: Reads the memory with the given name from Serena's project-specific memory store.
+#  * `remove_project`: Removes a project from the Serena configuration.
+#  * `replace_lines`: Replaces a range of lines within a file with new content.
+#  * `replace_symbol_body`: Replaces the full definition of a symbol.
+#  * `restart_language_server`: Restarts the language server, may be necessary when edits not through Serena happen.
+#  * `search_for_pattern`: Performs a search for a pattern in the project.
+#  * `summarize_changes`: Provides instructions for summarizing the changes made to the codebase.
+#  * `switch_modes`: Activates modes by providing a list of their names
+#  * `think_about_collected_information`: Thinking tool for pondering the completeness of collected information.
+#  * `think_about_task_adherence`: Thinking tool for determining whether the agent is still on track with the current task.
+#  * `think_about_whether_you_are_done`: Thinking tool for determining whether the task is truly completed.
+#  * `write_memory`: Writes a named memory (for future reference) to Serena's project-specific memory store.
+excluded_tools: []
+
+# initial prompt for the project. It will always be given to the LLM upon activating the project
+# (contrary to the memories, which are loaded on demand).
+initial_prompt: ""
+
+project_name: "smartarchive"

changelog.md

@@ -0,0 +1,135 @@
+# Changelog
+
+## 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.

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';

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

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"
   }
-}
+}

package.json

@@ -1,12 +1,12 @@
 {
   "name": "@push.rocks/smartarchive",
-  "version": "4.0.25",
+  "version": "5.0.0",
   "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": {}
+  }
 }

pnpm-workspace.yaml

@@ -0,0 +1,4 @@
+onlyBuiltDependencies:
+  - esbuild
+  - mongodb-memory-server
+  - puppeteer

readme.hints.md

@@ -1 +1,38 @@
- 
+# Smartarchive Development Hints
+
+## Dependency Upgrades (2025-01-25)
+
+### Completed Upgrades
+- **@git.zone/tsbuild**: ^2.6.6 → ^3.1.0
+- **@git.zone/tsrun**: ^1.3.3 → ^2.0.0
+- **@git.zone/tstest**: ^2.3.4 → ^3.1.3
+- **@push.rocks/smartfile**: ^11.2.7 → ^13.0.0
+
+### Migration Notes
+
+#### Smartfile v13 Migration
+Smartfile v13 removed filesystem operations (`fs`, `memory`, `fsStream` namespaces). These were replaced with Node.js native `fs` and `fs/promises`:
+
+**Replacements made:**
+- `smartfile.fs.ensureDir(path)` → `fsPromises.mkdir(path, { recursive: true })`
+- `smartfile.fs.stat(path)` → `fsPromises.stat(path)`
+- `smartfile.fs.toReadStream(path)` → `fs.createReadStream(path)`
+- `smartfile.fs.toStringSync(path)` → `fsPromises.readFile(path, 'utf8')`
+- `smartfile.fs.listFileTree(dir, pattern)` → custom `listFileTree()` helper
+- `smartfile.fsStream.createReadStream(path)` → `fs.createReadStream(path)`
+- `smartfile.fsStream.createWriteStream(path)` → `fs.createWriteStream(path)`
+- `smartfile.memory.toFs(content, path)` → `fsPromises.writeFile(path, content)`
+
+**Still using from smartfile v13:**
+- `SmartFile` class (in-memory file representation)
+- `StreamFile` class (streaming file handling)
+
+### Removed Dependencies
+- `through@2.3.8` - was unused in the codebase
+
+## Architecture Notes
+
+- Uses `fflate` for ZIP/GZIP compression (pure JS, works in browser)
+- Uses `tar-stream` for TAR archive handling
+- Uses `file-type` for MIME type detection
+- Custom BZIP2 implementation in `ts/bzip2/` directory

readme.md

@@ -1,98 +1,448 @@
-# @push.rocks/smartarchive
-work with archives
+# @push.rocks/smartarchive 📦
 
-## Install
+Powerful archive manipulation for modern Node.js applications.
 
-To install `@push.rocks/smartarchive`, you need to use npm or yarn. Run either of the following commands in your project directory:
+`@push.rocks/smartarchive` is a versatile library for handling archive files with a focus on developer experience. Work with **zip**, **tar**, **gzip**, and **bzip2** formats through a unified, streaming-optimized API.
 
-```shell
-npm install @push.rocks/smartarchive --save
-```
+## Issue Reporting and Security
 
-or if you prefer yarn:
+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.
 
-```shell
+## Features 🚀
+
+- 📁 **Multi-format support** – Handle `.zip`, `.tar`, `.tar.gz`, `.tgz`, and `.bz2` archives
+- 🌊 **Streaming-first architecture** – Process large archives without memory constraints
+- 🔄 **Unified API** – Consistent interface across different archive formats
+- 🎯 **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, and streams seamlessly
+- 🛠️ **Modern TypeScript** – Full type safety and excellent IDE support
+
+## 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
+const archive = await SmartArchive.fromArchiveUrl(
+  'https://registry.npmjs.org/some-package/-/some-package-1.0.0.tgz'
+);
+await archive.exportToFs('./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:
+### Process archive as a stream
 
 ```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);
+// Stream-based processing for memory efficiency
+const archive = await SmartArchive.fromArchiveFile('./large-archive.zip');
+const streamOfFiles = await archive.exportToStreamOfStreamFiles();
 
-  console.log('Archive extracted successfully.');
-}
+// Process each file in the archive
+streamOfFiles.on('data', async (streamFile) => {
+  console.log(`Processing ${streamFile.relativeFilePath}`);
+  const readStream = await streamFile.createReadStream();
+  // Handle individual file stream
+});
+
+streamOfFiles.on('end', () => {
+  console.log('Extraction complete');
+});
 ```
 
-### Creating Archive Files
+## Core Concepts 💡
 
-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.
+### Archive Sources
 
-### Analyzing Archive Files
+`SmartArchive` accepts archives from three sources:
 
-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:
+| Source | Method | Use Case |
+|--------|--------|----------|
+| **URL** | `SmartArchive.fromArchiveUrl(url)` | Download and process archives from the web |
+| **File** | `SmartArchive.fromArchiveFile(path)` | Load archives from the local filesystem |
+| **Stream** | `SmartArchive.fromArchiveStream(stream)` | Process archives from any Node.js stream |
+
+### Export Destinations
+
+| Destination | Method | Use Case |
+|-------------|--------|----------|
+| **Filesystem** | `exportToFs(targetDir, fileName?)` | Extract directly to a directory |
+| **Stream of files** | `exportToStreamOfStreamFiles()` | Process files individually as `StreamFile` objects |
+
+## Usage Examples 🔨
+
+### Working with ZIP files
 
 ```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';
+
+// Extract a ZIP file
+const zipArchive = await SmartArchive.fromArchiveFile('./archive.zip');
+await zipArchive.exportToFs('./output');
+
+// Stream ZIP contents for processing
+const fileStream = await zipArchive.exportToStreamOfStreamFiles();
+
+fileStream.on('data', async (streamFile) => {
+  if (streamFile.relativeFilePath.endsWith('.json')) {
+    const readStream = await streamFile.createReadStream();
+    // Process JSON files from the archive
+  }
+});
 ```
 
-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 TAR archives
 
 ```typescript
+import { SmartArchive, TarTools } from '@push.rocks/smartarchive';
+
+// Extract a .tar.gz file
+const tarGzArchive = await SmartArchive.fromArchiveFile('./archive.tar.gz');
+await tarGzArchive.exportToFs('./extracted');
+
+// Create a TAR archive using TarTools directly
+const tarTools = new TarTools();
+const pack = await tarTools.getPackStream();
+
+// Add files to the pack
+await tarTools.addFileToPack(pack, {
+  fileName: 'hello.txt',
+  content: 'Hello, World!'
+});
+
+await tarTools.addFileToPack(pack, {
+  fileName: 'data.json',
+  content: Buffer.from(JSON.stringify({ foo: 'bar' }))
+});
+
+// Finalize and pipe to destination
+pack.finalize();
+pack.pipe(createWriteStream('./output.tar'));
+```
+
+### Pack a directory into TAR
+
+```typescript
+import { TarTools } from '@push.rocks/smartarchive';
+import { createWriteStream } from 'fs';
+
+const tarTools = new TarTools();
+
+// Pack an entire directory
+const pack = await tarTools.packDirectory('./src');
+pack.finalize();
+pack.pipe(createWriteStream('./source.tar'));
+```
+
+### Extracting from URLs
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Download and extract npm packages
+const npmPackage = await SmartArchive.fromArchiveUrl(
+  'https://registry.npmjs.org/@push.rocks/smartfile/-/smartfile-11.2.7.tgz'
+);
+await npmPackage.exportToFs('./node_modules/@push.rocks/smartfile');
+
+// Or process as stream for memory efficiency
+const stream = await npmPackage.exportToStreamOfStreamFiles();
+stream.on('data', async (file) => {
+  console.log(`Extracted: ${file.relativeFilePath}`);
+});
+```
+
+### Working with GZIP files
+
+```typescript
+import { SmartArchive, GzipTools } from '@push.rocks/smartarchive';
 import { createReadStream, createWriteStream } from 'fs';
 
-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 - provide filename since gzip doesn't store it
+const gzipArchive = await SmartArchive.fromArchiveFile('./data.json.gz');
+await gzipArchive.exportToFs('./decompressed', 'data.json');
+
+// Use GzipTools directly for streaming decompression
+const gzipTools = new GzipTools();
+const decompressStream = gzipTools.getDecompressionStream();
+
+createReadStream('./compressed.gz')
+  .pipe(decompressStream)
+  .pipe(createWriteStream('./decompressed.txt'));
+```
+
+### Working with BZIP2 files
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Handle .bz2 files
+const bzipArchive = await SmartArchive.fromArchiveUrl(
+  'https://example.com/data.bz2'
+);
+await bzipArchive.exportToFs('./extracted', 'data.txt');
+```
+
+### In-memory processing (no filesystem)
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+import { Readable } from 'stream';
+
+// Process archives entirely in memory
+const compressedBuffer = await fetchCompressedData();
+const memoryStream = Readable.from(compressedBuffer);
+
+const archive = await SmartArchive.fromArchiveStream(memoryStream);
+const streamFiles = await archive.exportToStreamOfStreamFiles();
+
+const extractedFiles: Array<{ name: string; content: Buffer }> = [];
+
+streamFiles.on('data', async (streamFile) => {
+  const chunks: Buffer[] = [];
+  const readStream = await streamFile.createReadStream();
+
+  for await (const chunk of readStream) {
+    chunks.push(chunk);
+  }
+
+  extractedFiles.push({
+    name: streamFile.relativeFilePath,
+    content: Buffer.concat(chunks)
+  });
+});
+
+await new Promise((resolve) => streamFiles.on('end', resolve));
+console.log(`Extracted ${extractedFiles.length} files in memory`);
+```
+
+### Nested archive handling (e.g., .tar.gz)
+
+The library automatically handles nested compression. A `.tar.gz` file is:
+1. First decompressed from gzip
+2. Then unpacked from tar
+
+This happens transparently:
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+// Automatically handles gzip → tar extraction chain
+const tgzArchive = await SmartArchive.fromArchiveFile('./package.tar.gz');
+await tgzArchive.exportToFs('./extracted');
+```
+
+## API Reference 📚
+
+### SmartArchive Class
+
+The main entry point for archive operations.
+
+#### Static Factory Methods
+
+```typescript
+// Create from URL - downloads and processes archive
+SmartArchive.fromArchiveUrl(url: string): Promise<SmartArchive>
+
+// Create from local file path
+SmartArchive.fromArchiveFile(path: string): Promise<SmartArchive>
+
+// Create from any Node.js readable stream
+SmartArchive.fromArchiveStream(stream: Readable | Duplex | Transform): Promise<SmartArchive>
+```
+
+#### Instance Methods
+
+```typescript
+// Extract all files to a directory
+// fileName is optional - used for single-file archives (like .gz) that don't store filename
+exportToFs(targetDir: string, fileName?: string): Promise<void>
+
+// Get a stream that emits StreamFile objects for each file in the archive
+exportToStreamOfStreamFiles(): Promise<StreamIntake<StreamFile>>
+
+// Get the raw archive stream (useful for piping)
+getArchiveStream(): Promise<Readable>
+```
+
+#### Instance Properties
+
+```typescript
+archive.tarTools      // TarTools instance for TAR-specific operations
+archive.zipTools      // ZipTools instance for ZIP-specific operations
+archive.gzipTools     // GzipTools instance for GZIP-specific operations
+archive.bzip2Tools    // Bzip2Tools instance for BZIP2-specific operations
+archive.archiveAnalyzer // ArchiveAnalyzer for inspecting archive type
+```
+
+### TarTools Class
+
+TAR-specific operations for creating and extracting TAR archives.
+
+```typescript
+import { TarTools } from '@push.rocks/smartarchive';
+
+const tarTools = new TarTools();
+
+// Get a tar pack stream for creating archives
+const pack = await tarTools.getPackStream();
+
+// Add files to a pack stream
+await tarTools.addFileToPack(pack, {
+  fileName: 'file.txt',          // Name in archive
+  content: 'Hello World',        // String, Buffer, Readable, SmartFile, or StreamFile
+  byteLength?: number,           // Optional: specify size for streams
+  filePath?: string              // Optional: path to file on disk
+});
+
+// Pack an entire directory
+const pack = await tarTools.packDirectory('./src');
+
+// Get extraction stream
+const extract = tarTools.getDecompressionStream();
+```
+
+### ZipTools Class
+
+ZIP-specific operations.
+
+```typescript
+import { ZipTools } from '@push.rocks/smartarchive';
+
+const zipTools = new ZipTools();
+
+// Get compression stream (for creating ZIP)
+const compressor = zipTools.getCompressionStream();
+
+// Get decompression stream (for extracting ZIP)
+const decompressor = zipTools.getDecompressionStream();
+```
+
+### GzipTools Class
+
+GZIP compression/decompression streams.
+
+```typescript
+import { GzipTools } from '@push.rocks/smartarchive';
+
+const gzipTools = new GzipTools();
+
+// Get compression stream
+const compressor = gzipTools.getCompressionStream();
+
+// Get decompression stream
+const decompressor = gzipTools.getDecompressionStream();
+```
+
+## Supported Formats 📋
+
+| Format | Extension(s) | Extract | Create |
+|--------|--------------|---------|--------|
+| TAR | `.tar` | ✅ | ✅ |
+| TAR.GZ / TGZ | `.tar.gz`, `.tgz` | ✅ | ⚠️ |
+| ZIP | `.zip` | ✅ | ⚠️ |
+| GZIP | `.gz` | ✅ | ✅ |
+| BZIP2 | `.bz2` | ✅ | ❌ |
+
+✅ Full support | ⚠️ Partial/basic support | ❌ Not supported
+
+## Performance Tips 🏎️
+
+1. **Use streaming for large files** – Avoid loading entire archives into memory with `exportToStreamOfStreamFiles()`
+2. **Provide byte lengths when known** – When adding streams to TAR, provide `byteLength` for better performance
+3. **Process files as they stream** – Don't collect all files into an array unless necessary
+4. **Choose the right format** – TAR.GZ for Unix/compression, ZIP for cross-platform compatibility
+
+## Error Handling 🛡️
+
+```typescript
+import { SmartArchive } from '@push.rocks/smartarchive';
+
+try {
+  const archive = await SmartArchive.fromArchiveUrl('https://example.com/file.zip');
+  await archive.exportToFs('./output');
+} catch (error) {
+  if (error.code === 'ENOENT') {
+    console.error('Archive file not found');
+  } else if (error.code === 'EACCES') {
+    console.error('Permission denied');
+  } else if (error.message.includes('fetch')) {
+    console.error('Network error downloading archive');
+  } else {
+    console.error('Archive extraction failed:', error.message);
+  }
 }
 ```
 
-### Conclusion
+## Real-World Use Cases 🌍
 
-`@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.
+### CI/CD: Download & Extract Build Artifacts
 
-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`.
+```typescript
+const artifacts = await SmartArchive.fromArchiveUrl(
+  `${CI_SERVER}/artifacts/build-${BUILD_ID}.zip`
+);
+await artifacts.exportToFs('./dist');
+```
 
-For more information and API references, check the official [`@push.rocks/smartarchive` GitHub repository](https://github.com/pushrocks/smartarchive).
+### Backup System: Restore from Archive
+
+```typescript
+const backup = await SmartArchive.fromArchiveFile('./backup-2024.tar.gz');
+await backup.exportToFs('/restore/location');
+```
+
+### NPM Package Inspection
+
+```typescript
+const pkg = await SmartArchive.fromArchiveUrl(
+  'https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz'
+);
+const files = await pkg.exportToStreamOfStreamFiles();
+
+files.on('data', async (file) => {
+  if (file.relativeFilePath.includes('package.json')) {
+    const stream = await file.createReadStream();
+    // Read and analyze package.json
+  }
+});
+```
+
+### Data Pipeline: Process Compressed Datasets
+
+```typescript
+const dataset = await SmartArchive.fromArchiveUrl(
+  'https://data.source/dataset.tar.gz'
+);
+
+const files = await dataset.exportToStreamOfStreamFiles();
+files.on('data', async (file) => {
+  if (file.relativeFilePath.endsWith('.csv')) {
+    const stream = await file.createReadStream();
+    // Stream CSV processing
+  }
+});
+```
 
 ## 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.
 
@@ -102,7 +452,7 @@ This project is owned and maintained by Task Venture Capital GmbH. The names and
 
 ### 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.

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;
 }

test/test.gzip.node+deno.ts

@@ -0,0 +1,401 @@
+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
+  const gzipArchive = await smartarchive.SmartArchive.fromFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName)
+  );
+
+  // Export to a new location
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'extracted');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+  // Provide a filename since gzip doesn't contain filename metadata
+  await gzipArchive.extractToDirectory(extractPath, { fileName: 'test-file.txt' });
+
+  // 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
+  const gzipArchive = await smartarchive.SmartArchive.fromStream(gzipStream);
+
+  // Export to stream and collect the result
+  const streamFiles: any[] = [];
+  const resultStream = await gzipArchive.extractToStream();
+  
+  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 originalFileName = 'original-name.log';
+  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,
+      // Note: Node's zlib doesn't support embedding filename directly,
+      // but we can test the extraction anyway
+    }, (err, result) => {
+      if (err) reject(err);
+      else resolve(result);
+    });
+  });
+  
+  await plugins.fsPromises.writeFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName),
+    gzipBuffer
+  );
+
+  // Test extraction
+  const gzipArchive = await smartarchive.SmartArchive.fromFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName)
+  );
+
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'header-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+  // Provide a filename since gzip doesn't reliably contain filename metadata
+  await gzipArchive.extractToDirectory(extractPath, { fileName: 'compressed.txt' });
+
+  // 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
+  const gzipArchive = await smartarchive.SmartArchive.fromFile(
+    plugins.path.join(testPaths.gzipTestDir, gzipFileName)
+  );
+
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'large-extracted');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+  // Provide a filename since gzip doesn't contain filename metadata
+  await gzipArchive.extractToDirectory(extractPath, { fileName: 'large-file.txt' });
+
+  // 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
+  const testArchive = await smartarchive.SmartArchive.fromUrl(testUrl);
+
+  const extractPath = plugins.path.join(testPaths.gzipTestDir, 'real-world-test');
+  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
+
+  // This will test multi-chunk decompression as the file is larger
+  await testArchive.extractToDirectory(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));
+  
+  // Create a stream from the compressed data
+  const { Readable } = await import('node:stream');
+  const compressedStream = Readable.from(Buffer.from(compressed));
+  
+  // Process through SmartArchive without touching filesystem
+  const gzipArchive = await smartarchive.SmartArchive.fromStream(compressedStream);
+
+  // Export to stream of stream files (in memory)
+  const streamFiles: plugins.smartfile.StreamFile[] = [];
+  const resultStream = await gzipArchive.extractToStream();
+  
+  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`);
+  
+  // Create stream from buffer
+  const { Readable: Readable2 } = await import('node:stream');
+  const tgzStream = Readable2.from(tgzBuffer);
+  
+  // Process through SmartArchive in memory
+  const archive = await smartarchive.SmartArchive.fromStream(tgzStream);
+
+  // Export to stream of stream files (in memory)
+  const streamFiles: plugins.smartfile.StreamFile[] = [];
+  const resultStream = await archive.extractToStream();
+  
+  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();

test/test.node+deno.ts

@@ -0,0 +1,51 @@
+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', async () => {
+  const testSmartarchive = await smartarchive.SmartArchive.fromUrl(
+    'https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz',
+  );
+  await testSmartarchive.extractToDirectory(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.fromUrl(dataUrl);
+  await testArchive.extractToDirectory(
+    plugins.path.join(testPaths.nogitDir, 'de_companies_ocdata.jsonl'),
+  );
+});
+
+await tap.start();

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();

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: '5.0.0',
   description: 'A library for working with archive files, providing utilities for compressing and decompressing data.'
 }

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;
+}

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;
+  }
+}

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;
     },
   });
 }

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;
   }
 }

ts/classes.bzip2tools.ts

@@ -13,4 +13,4 @@ export class Bzip2Tools {
   getDecompressionStream() {
     return unbzip2Stream();
   }
-}
+}

ts/classes.gziptools.ts

@@ -1,59 +1,143 @@
-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
+   */
+  public async compress(data: Buffer, level?: TCompressionLevel): Promise<Buffer> {
+    return new Promise((resolve, reject) => {
+      const options = level !== undefined ? { level } : undefined;
+      plugins.fflate.gzip(data, options as plugins.fflate.AsyncGzipOptions, (err, result) => {
+        if (err) reject(err);
+        else resolve(Buffer.from(result));
+      });
+    });
+  }
+
+  /**
+   * Decompress data asynchronously
+   */
+  public async decompress(data: Buffer): Promise<Buffer> {
+    return new Promise((resolve, reject) => {
+      plugins.fflate.gunzip(data, (err, result) => {
+        if (err) reject(err);
+        else resolve(Buffer.from(result));
+      });
+    });
   }
 }

ts/classes.smartarchive.ts

@@ -1,30 +1,51 @@
 import * as plugins from './plugins.js';
-import * as paths from './paths.js';
+import type {
+  IArchiveCreationOptions,
+  IArchiveEntry,
+  IArchiveExtractionOptions,
+  IArchiveEntryInfo,
+  IArchiveInfo,
+  TArchiveFormat,
+  TCompressionLevel,
+} 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';
-
+/**
+ * Main class for archive manipulation
+ * Supports TAR, ZIP, GZIP, and BZIP2 formats
+ */
 export class SmartArchive {
-  // STATIC
-  public static async fromArchiveUrl(urlArg: string): Promise<SmartArchive> {
+  // ============================================
+  // STATIC FACTORY METHODS - EXTRACTION
+  // ============================================
+
+  /**
+   * Create SmartArchive from a URL
+   */
+  public static async fromUrl(urlArg: string): Promise<SmartArchive> {
     const smartArchiveInstance = new SmartArchive();
     smartArchiveInstance.sourceUrl = urlArg;
     return smartArchiveInstance;
   }
 
-  public static async fromArchiveFile(filePathArg: string): Promise<SmartArchive> {
+  /**
+   * Create SmartArchive from a local file path
+   */
+  public static async fromFile(filePathArg: string): Promise<SmartArchive> {
     const smartArchiveInstance = new SmartArchive();
     smartArchiveInstance.sourceFilePath = filePathArg;
     return smartArchiveInstance;
   }
 
-  public static async fromArchiveStream(
+  /**
+   * Create SmartArchive from a readable stream
+   */
+  public static async fromStream(
     streamArg: plugins.stream.Readable | plugins.stream.Duplex | plugins.stream.Transform
   ): Promise<SmartArchive> {
     const smartArchiveInstance = new SmartArchive();
@@ -32,126 +53,377 @@ export class SmartArchive {
     return smartArchiveInstance;
   }
 
-  // INSTANCE
-  public gzipTools = new GzipTools(this);
+  /**
+   * Create SmartArchive from an in-memory buffer
+   */
+  public static async fromBuffer(buffer: Buffer): Promise<SmartArchive> {
+    const smartArchiveInstance = new SmartArchive();
+    smartArchiveInstance.sourceStream = plugins.stream.Readable.from(buffer);
+    return smartArchiveInstance;
+  }
+
+  // ============================================
+  // STATIC FACTORY METHODS - CREATION
+  // ============================================
+
+  /**
+   * Create a new archive from a directory
+   */
+  public static async fromDirectory(
+    directoryPath: string,
+    options: IArchiveCreationOptions
+  ): Promise<SmartArchive> {
+    const smartArchiveInstance = new SmartArchive();
+    smartArchiveInstance.creationOptions = options;
+
+    const tarTools = new TarTools();
+
+    if (options.format === 'tar' || options.format === 'tar.gz' || options.format === 'tgz') {
+      if (options.format === 'tar') {
+        const pack = await tarTools.packDirectory(directoryPath);
+        pack.finalize();
+        smartArchiveInstance.archiveBuffer = await SmartArchive.streamToBuffer(pack);
+      } else {
+        smartArchiveInstance.archiveBuffer = await tarTools.packDirectoryToTarGz(
+          directoryPath,
+          options.compressionLevel
+        );
+      }
+    } else if (options.format === 'zip') {
+      const zipTools = new ZipTools();
+      const fileTree = await plugins.listFileTree(directoryPath, '**/*');
+      const entries: IArchiveEntry[] = [];
+
+      for (const filePath of fileTree) {
+        const absolutePath = plugins.path.join(directoryPath, filePath);
+        const content = await plugins.fsPromises.readFile(absolutePath);
+        entries.push({
+          archivePath: filePath,
+          content,
+        });
+      }
+
+      smartArchiveInstance.archiveBuffer = await zipTools.createZip(entries, options.compressionLevel);
+    } else {
+      throw new Error(`Unsupported format for directory packing: ${options.format}`);
+    }
+
+    return smartArchiveInstance;
+  }
+
+  /**
+   * Create a new archive from an array of entries
+   */
+  public static async fromFiles(
+    files: IArchiveEntry[],
+    options: IArchiveCreationOptions
+  ): Promise<SmartArchive> {
+    const smartArchiveInstance = new SmartArchive();
+    smartArchiveInstance.creationOptions = options;
+
+    if (options.format === 'tar' || options.format === 'tar.gz' || options.format === 'tgz') {
+      const tarTools = new TarTools();
+      if (options.format === 'tar') {
+        smartArchiveInstance.archiveBuffer = await tarTools.packFiles(files);
+      } else {
+        smartArchiveInstance.archiveBuffer = await tarTools.packFilesToTarGz(files, options.compressionLevel);
+      }
+    } else if (options.format === 'zip') {
+      const zipTools = new ZipTools();
+      smartArchiveInstance.archiveBuffer = await zipTools.createZip(files, options.compressionLevel);
+    } else if (options.format === 'gz') {
+      if (files.length !== 1) {
+        throw new Error('GZIP format only supports a single file');
+      }
+      const gzipTools = new GzipTools();
+      let content: Buffer;
+      if (typeof files[0].content === 'string') {
+        content = Buffer.from(files[0].content);
+      } else if (Buffer.isBuffer(files[0].content)) {
+        content = files[0].content;
+      } else {
+        throw new Error('GZIP format requires string or Buffer content');
+      }
+      smartArchiveInstance.archiveBuffer = await gzipTools.compress(content, options.compressionLevel);
+    } else {
+      throw new Error(`Unsupported format: ${options.format}`);
+    }
+
+    return smartArchiveInstance;
+  }
+
+  /**
+   * Start building an archive incrementally using a builder pattern
+   */
+  public static create(options: IArchiveCreationOptions): SmartArchive {
+    const smartArchiveInstance = new SmartArchive();
+    smartArchiveInstance.creationOptions = options;
+    smartArchiveInstance.pendingEntries = [];
+    return smartArchiveInstance;
+  }
+
+  /**
+   * Helper to convert a stream to buffer
+   */
+  private static 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);
+    });
+  }
+
+  // ============================================
+  // INSTANCE PROPERTIES
+  // ============================================
+
+  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;
+  public sourceUrl?: string;
+  public sourceFilePath?: string;
+  public sourceStream?: plugins.stream.Readable | plugins.stream.Duplex | plugins.stream.Transform;
 
-  public archiveName: string;
-  public singleFileMode: boolean = false;
-
-  public addedDirectories: string[] = [];
-  public addedFiles: (plugins.smartfile.SmartFile | plugins.smartfile.StreamFile)[] = [];
-  public addedUrls: string[] = [];
+  private archiveBuffer?: Buffer;
+  private creationOptions?: IArchiveCreationOptions;
+  private pendingEntries?: IArchiveEntry[];
 
   constructor() {}
 
+  // ============================================
+  // BUILDER METHODS (for incremental creation)
+  // ============================================
+
   /**
-   * gets the original archive stream
+   * Add a file to the archive (builder pattern)
    */
-  public async getArchiveStream() {
+  public addFile(archivePath: string, content: string | Buffer): this {
+    if (!this.pendingEntries) {
+      throw new Error('addFile can only be called on archives created with SmartArchive.create()');
+    }
+    this.pendingEntries.push({ archivePath, content });
+    return this;
+  }
+
+  /**
+   * Add a SmartFile to the archive (builder pattern)
+   */
+  public addSmartFile(file: plugins.smartfile.SmartFile, archivePath?: string): this {
+    if (!this.pendingEntries) {
+      throw new Error('addSmartFile can only be called on archives created with SmartArchive.create()');
+    }
+    this.pendingEntries.push({
+      archivePath: archivePath || file.relative,
+      content: file,
+    });
+    return this;
+  }
+
+  /**
+   * Add a StreamFile to the archive (builder pattern)
+   */
+  public addStreamFile(file: plugins.smartfile.StreamFile, archivePath?: string): this {
+    if (!this.pendingEntries) {
+      throw new Error('addStreamFile can only be called on archives created with SmartArchive.create()');
+    }
+    this.pendingEntries.push({
+      archivePath: archivePath || file.relativeFilePath,
+      content: file,
+    });
+    return this;
+  }
+
+  /**
+   * Build the archive from pending entries
+   */
+  public async build(): Promise<SmartArchive> {
+    if (!this.pendingEntries || !this.creationOptions) {
+      throw new Error('build can only be called on archives created with SmartArchive.create()');
+    }
+
+    const built = await SmartArchive.fromFiles(this.pendingEntries, this.creationOptions);
+    this.archiveBuffer = built.archiveBuffer;
+    this.pendingEntries = undefined;
+    return this;
+  }
+
+  // ============================================
+  // EXTRACTION METHODS
+  // ============================================
+
+  /**
+   * Get the original archive stream
+   */
+  public async toStream(): Promise<plugins.stream.Readable> {
+    if (this.archiveBuffer) {
+      return plugins.stream.Readable.from(this.archiveBuffer);
+    }
     if (this.sourceStream) {
       return this.sourceStream;
     }
     if (this.sourceUrl) {
-      const urlStream = await plugins.smartrequest.getStream(this.sourceUrl);
-      return urlStream;
+      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) {
-      const fileStream = plugins.smartfile.fs.toReadStream(this.sourceFilePath);
-      return fileStream;
+      return plugins.fs.createReadStream(this.sourceFilePath);
     }
+    throw new Error('No archive source configured');
   }
 
-  public async exportToTarGzStream() {
-    const tarPackStream = await this.tarTools.getPackStream();
-    const gzipStream = await this.gzipTools.getCompressionStream();
-    // const archiveStream = tarPackStream.pipe(gzipStream);
-    // return archiveStream;
+  /**
+   * Get archive as a Buffer
+   */
+  public async toBuffer(): Promise<Buffer> {
+    if (this.archiveBuffer) {
+      return this.archiveBuffer;
+    }
+    const stream = await this.toStream();
+    return SmartArchive.streamToBuffer(stream);
   }
 
-  public async exportToFs(targetDir: string, fileNameArg?: string): Promise<void> {
+  /**
+   * Write archive to a 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);
+  }
+
+  /**
+   * Extract archive to filesystem
+   */
+  public async extractToDirectory(
+    targetDir: string,
+    options?: Partial<IArchiveExtractionOptions>
+  ): Promise<void> {
     const done = plugins.smartpromise.defer<void>();
-    const streamFileStream = await this.exportToStreamOfStreamFiles();
+    const streamFileStream = await this.extractToStream();
+
     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 || options?.fileName || 'extracted_file';
+
+          // Apply stripComponents if specified
+          if (options?.stripComponents && options.stripComponents > 0) {
+            const parts = relativePath.split('/');
+            relativePath = parts.slice(options.stripComponents).join('/');
+            if (!relativePath) {
+              innerDone.resolve();
+              return;
+            }
+          }
+
+          // Apply filter if specified
+          if (options?.filter) {
+            const entryInfo: IArchiveEntryInfo = {
+              path: relativePath,
+              size: 0,
+              isDirectory: false,
+              isFile: true,
+            };
+            if (!options.filter(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 extractToStream(): Promise<plugins.smartstream.StreamIntake<plugins.smartfile.StreamFile>> {
     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.toStream();
     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 +434,156 @@ 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 extractToSmartFiles(): Promise<plugins.smartfile.SmartFile[]> {
+    const streamFiles = await this.extractToStream();
+    const smartFiles: plugins.smartfile.SmartFile[] = [];
+
+    return new Promise((resolve, reject) => {
+      streamFiles.on('data', async (streamFile: plugins.smartfile.StreamFile) => {
+        try {
+          const smartFile = await streamFile.toSmartFile();
+          smartFiles.push(smartFile);
+        } catch (err) {
+          reject(err);
+        }
+      });
+      streamFiles.on('end', () => 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> {
+    const streamFiles = await this.extractToStream();
+
+    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);
+    });
+  }
+
+  // ============================================
+  // ANALYSIS METHODS
+  // ============================================
+
+  /**
+   * Analyze the archive and return metadata
+   */
+  public async analyze(): Promise<IArchiveInfo> {
+    const stream = await this.toStream();
+    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 without extracting
+   */
+  public async listEntries(): Promise<IArchiveEntryInfo[]> {
+    const entries: IArchiveEntryInfo[] = [];
+    const streamFiles = await this.extractToStream();
+
+    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> {
+    const entries = await this.listEntries();
+    return entries.some((e) => e.path === filePath || e.path.endsWith(filePath));
+  }
+
+  /**
+   * Helper to 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);
+    });
+  }
 }

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);
+  }
 }

ts/classes.ziptools.ts

@@ -1,77 +1,209 @@
-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;
+    }
+
+    return new Promise((resolve, reject) => {
+      plugins.fflate.zip(filesObj, (err, result) => {
+        if (err) {
+          reject(err);
+        } else {
+          this.push(Buffer.from(result));
+          this.push(null);
+          resolve();
+        }
+      });
+    });
+  }
+
+  _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 {
+  /**
+   * Get a streaming compression object for creating ZIP archives
+   */
+  public getCompressionStream(): ZipCompressionStream {
+    return new ZipCompressionStream();
+  }
+
+  /**
+   * Get a streaming decompression transform for extracting ZIP archives
+   */
+  public getDecompressionStream(): ZipDecompressionTransform {
+    return new ZipDecompressionTransform();
+  }
+
+  /**
+   * 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;
+      }
+    }
+
+    return new Promise((resolve, reject) => {
+      plugins.fflate.zip(filesObj, (err, result) => {
+        if (err) reject(err);
+        else resolve(Buffer.from(result));
+      });
+    });
+  }
+
+  /**
+   * Extract a ZIP buffer to an array of entries
+   */
+  public async extractZip(data: Buffer): Promise<Array<{ path: string; content: Buffer }>> {
+    return new Promise((resolve, reject) => {
+      plugins.fflate.unzip(data, (err, result) => {
+        if (err) {
+          reject(err);
+          return;
+        }
+
+        const entries: Array<{ path: string; content: Buffer }> = [];
+        for (const [path, content] of Object.entries(result)) {
+          entries.push({ path, content: Buffer.from(content) });
+        }
+        resolve(entries);
+      });
     });
   }
 }
-
-export class ZipTools {
-  smartArchiveRef: SmartArchive;
-
-  constructor(smartArchiveRefArg: SmartArchive) {
-    this.smartArchiveRef = smartArchiveRefArg;
-  }
-
-  public getCompressionStream() {
-    return new CompressZipTransform();
-  }
-
-  public getDecompressionStream() {
-    return new DecompressZipTransform();
-  }
-}

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);
+}

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';

ts/interfaces.ts

@@ -0,0 +1,131 @@
+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;
+}

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');

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';

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"]
 }