v5.0.1

fix(ziptools,gziptools): Use fflate synchronous APIs for ZIP and GZIP operations for Deno compatibility; add TEntryFilter type and small docs/tests cleanup
v5.0.0
2025-11-25 13:37:27 +00:00 · 2025-11-25 13:37:27 +00:00 · 2025-11-25 12:32:13 +00:00 · 2025-11-25 12:32:13 +00:00
22 changed files with 2609 additions and 1107 deletions
--- a/.serena/cache/typescript/document_symbols_cache_v23-06-25.pkl
+++ b/.serena/cache/typescript/document_symbols_cache_v23-06-25.pkl
--- a/.serena/project.yml
+++ b/.serena/project.yml
@@ -1,68 +0,0 @@
 # 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"
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,27 @@
 # Changelog
 ## 2025-11-25 - 5.0.1 - fix(ziptools,gziptools)
 Use fflate synchronous APIs for ZIP and GZIP operations for Deno compatibility; add TEntryFilter type and small docs/tests cleanup
 - Replace fflate async APIs (zip, unzip, gzip, gunzip with callbacks) with synchronous counterparts (zipSync, unzipSync, gzipSync, gunzipSync) to avoid Web Worker issues in Deno
 - ZipCompressionStream.finalize now uses fflate.zipSync and emits compressed Buffer synchronously
 - GzipTools.compress / decompress now delegate to compressSync / decompressSync for cross-runtime compatibility
 - ZipTools.createZip and ZipTools.extractZip now use zipSync/unzipSync and return Buffers
 - Add TEntryFilter type to ts/interfaces.ts for fluent API entry filtering
 - Minor readme.hints.md updates and small whitespace tidy in tests
 ## 2025-11-25 - 5.0.0 - BREAKING CHANGE(SmartArchive)
 Refactor public API: rename factory/extraction methods, introduce typed interfaces and improved compression tools
 - Renamed SmartArchive factory methods: fromArchiveUrl -> fromUrl, fromArchiveFile -> fromFile, fromArchiveStream -> fromStream; added fromBuffer helper.
 - Renamed extraction APIs: exportToFs -> extractToDirectory and exportToStreamOfStreamFiles -> extractToStream; stream-based helpers updated accordingly.
 - Export surface reorganized (ts/index.ts): core interfaces and errors are exported and new modules (bzip2tools, archiveanalyzer) are publicly available.
 - Introduced strong TypeScript types (ts/interfaces.ts) and centralized error types (ts/errors.ts) including Bzip2Error and BZIP2_ERROR_CODES.
 - Refactored format implementations and stream transforms: GzipTools/GzipCompressionTransform/GzipDecompressionTransform, ZipTools (ZipCompressionStream, ZipDecompressionTransform), TarTools improvements.
 - BZIP2 implementation improvements: new bit iterator (IBitReader), clearer error handling and streaming unbzip2 transform.
 - Updated tests to use the new APIs and method names.
 - Breaking change: public API method names and some class/transform names have changed — this requires code updates for consumers.
 ## 2025-11-25 - 4.2.4 - fix(plugins)
 Migrate filesystem usage to Node fs/fsPromises and upgrade smartfile to v13; add listFileTree helper and update tests
--- a/dist_ts/index.d.ts
+++ b/dist_ts/index.d.ts
@@ -1,4 +1,8 @@
 export * from './interfaces.js';
 export * from './errors.js';
 export * from './classes.smartarchive.js';
 export * from './classes.tartools.js';
 export * from './classes.ziptools.js';
 export * from './classes.gziptools.js';
 export * from './classes.bzip2tools.js';
 export * from './classes.archiveanalyzer.js';
--- a/dist_ts/index.js
+++ b/dist_ts/index.js
@@ -1,5 +1,13 @@
 // 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';
-//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiaW5kZXguanMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyIuLi90cy9pbmRleC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSxjQUFjLDJCQUEyQixDQUFDO0FBQzFDLGNBQWMsdUJBQXVCLENBQUM7QUFDdEMsY0FBYyx1QkFBdUIsQ0FBQztBQUN0QyxjQUFjLHdCQUF3QixDQUFDIn0=
+export * from './classes.bzip2tools.js';
 // Archive analysis
 export * from './classes.archiveanalyzer.js';
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiaW5kZXguanMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyIuLi90cy9pbmRleC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSx3QkFBd0I7QUFDeEIsY0FBYyxpQkFBaUIsQ0FBQztBQUNoQyxjQUFjLGFBQWEsQ0FBQztBQUU1QixxQkFBcUI7QUFDckIsY0FBYywyQkFBMkIsQ0FBQztBQUUxQyx3QkFBd0I7QUFDeEIsY0FBYyx1QkFBdUIsQ0FBQztBQUN0QyxjQUFjLHVCQUF1QixDQUFDO0FBQ3RDLGNBQWMsd0JBQXdCLENBQUM7QUFDdkMsY0FBYyx5QkFBeUIsQ0FBQztBQUV4QyxtQkFBbUI7QUFDbkIsY0FBYyw4QkFBOEIsQ0FBQyJ9
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@push.rocks/smartarchive",
-  "version": "4.2.4",
+  "version": "5.0.1",
  "description": "A library for working with archive files, providing utilities for compressing and decompressing data.",
  "main": "dist_ts/index.js",
  "typings": "dist_ts/index.d.ts",
--- a/readme.hints.md
+++ b/readme.hints.md
@@ -1,38 +1,84 @@
 # Smartarchive Development Hints
-## Dependency Upgrades (2025-01-25)
+## Architecture Overview
-### Completed Upgrades
+`@push.rocks/smartarchive` uses a **fluent builder pattern** for all archive operations. The main entry point is `SmartArchive.create()` which returns a builder instance.
 - **@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
+### Two Operating Modes
-#### Smartfile v13 Migration
+1. **Extraction Mode** - Triggered by `.url()`, `.file()`, `.stream()`, or `.buffer()`
-Smartfile v13 removed filesystem operations (`fs`, `memory`, `fsStream` namespaces). These were replaced with Node.js native `fs` and `fs/promises`:
+2. **Creation Mode** - Triggered by `.format()` or `.entry()`
-**Replacements made:**
+Modes are mutually exclusive - you cannot mix extraction and creation methods in the same chain.
 ## Key Classes
 - **SmartArchive** - Main class with fluent API for all operations
 - **TarTools** - TAR-specific operations (pack/extract)
 - **ZipTools** - ZIP-specific operations using fflate
 - **GzipTools** - GZIP compression/decompression using fflate
 - **Bzip2Tools** - BZIP2 decompression (extract only, no creation)
 - **ArchiveAnalyzer** - Format detection via magic bytes
 ## Dependencies
 - **fflate** - Pure JS compression for ZIP/GZIP (works in browser)
 - **tar-stream** - TAR archive handling
 - **file-type** - MIME type detection via magic bytes
 - **@push.rocks/smartfile** - SmartFile and StreamFile classes
 ## API Changes (v5.0.0)
 The v5.0.0 release introduced a complete API refactor:
 ### Old API (deprecated)
 ```typescript
 // Old static factory methods - NO LONGER EXIST
 await SmartArchive.fromUrl(url);
 await SmartArchive.fromFile(path);
 await SmartArchive.fromDirectory(path, options);
 ```
 ### New Fluent API
 ```typescript
 // Current fluent builder pattern
 await SmartArchive.create()
  .url(url)
  .extract(targetDir);
 await SmartArchive.create()
  .format('tar.gz')
  .directory(path)
  .toFile(outputPath);
 ```
 ## Migration Notes (from v4.x)
 ### Smartfile v13 Changes
 Smartfile v13 removed filesystem operations. Replacements:
 - `smartfile.fs.ensureDir(path)` → `fsPromises.mkdir(path, { recursive: true })`
 - `smartfile.fs.stat(path)` → `fsPromises.stat(path)`
 - `smartfile.fs.toReadStream(path)` → `fs.createReadStream(path)`
 - `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:**
+### Still using from smartfile
 - `SmartFile` class (in-memory file representation)
 - `StreamFile` class (streaming file handling)
-### Removed Dependencies
+## Testing
 - `through@2.3.8` - was unused in the codebase
-## Architecture Notes
+```bash
 pnpm test              # Run all tests
 tstest test/test.node+deno.ts --verbose  # Run specific test
 ```
- Uses `fflate` for ZIP/GZIP compression (pure JS, works in browser)
+Tests use a Verdaccio registry URL (`verdaccio.lossless.digital`) for test archives.
- Uses `tar-stream` for TAR archive handling
+
- Uses `file-type` for MIME type detection
+## Key Files
- Custom BZIP2 implementation in `ts/bzip2/` directory
+
 - `ts/classes.smartarchive.ts` - Main SmartArchive class with fluent API
 - `ts/classes.tartools.ts` - TAR operations
 - `ts/classes.ziptools.ts` - ZIP operations
 - `ts/classes.gziptools.ts` - GZIP operations
 - `ts/classes.bzip2tools.ts` - BZIP2 decompression
 - `ts/classes.archiveanalyzer.ts` - Format detection
 - `ts/interfaces.ts` - Type definitions
--- a/readme.md
+++ b/readme.md
@@ -1,8 +1,6 @@
 # @push.rocks/smartarchive 📦
-Powerful archive manipulation for modern Node.js applications.
+A powerful, streaming-first archive manipulation library with a fluent builder API. Works seamlessly in Node.js and Deno.
 `@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.
 ## Issue Reporting and Security
@@ -10,13 +8,15 @@ For reporting bugs, issues, or security vulnerabilities, please visit [community
 ## Features 🚀
- 📁 **Multi-format support** – Handle `.zip`, `.tar`, `.tar.gz`, `.tgz`, and `.bz2` archives
+- 📁 **Multi-format support** – Handle `.zip`, `.tar`, `.tar.gz`, `.tgz`, `.gz`, and `.bz2` archives
 - 🌊 **Streaming-first architecture** – Process large archives without memory constraints
- 🔄 **Unified API** – Consistent interface across different archive formats
+- ✨ **Fluent builder API** – Chain methods for readable, expressive code
 - 🎯 **Smart detection** – Automatically identifies archive types via magic bytes
 - ⚡ **High performance** – Built on `tar-stream` and `fflate` for speed
- 🔧 **Flexible I/O** – Work with files, URLs, and streams seamlessly
+- 🔧 **Flexible I/O** – Work with files, URLs, streams, and buffers seamlessly
 - 🛠️ **Modern TypeScript** – Full type safety and excellent IDE support
 - 🔄 **Dual-mode operation** – Extract existing archives OR create new ones
 - 🦕 **Cross-runtime** – Works in both Node.js and Deno environments
 ## Installation 📥
@@ -39,88 +39,288 @@ yarn add @push.rocks/smartarchive
 import { SmartArchive } from '@push.rocks/smartarchive';
 // Extract a .tar.gz archive from a URL directly to the filesystem
-const archive = await SmartArchive.fromArchiveUrl(
+await SmartArchive.create()
-  'https://registry.npmjs.org/some-package/-/some-package-1.0.0.tgz'
+  .url('https://registry.npmjs.org/some-package/-/some-package-1.0.0.tgz')
-);
+  .extract('./extracted');
 await archive.exportToFs('./extracted');
 ```
-### Process archive as a stream
+### Create an archive from entries
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
-// Stream-based processing for memory efficiency
+// Create a tar.gz archive with files
-const archive = await SmartArchive.fromArchiveFile('./large-archive.zip');
+await SmartArchive.create()
-const streamOfFiles = await archive.exportToStreamOfStreamFiles();
+  .format('tar.gz')
  .compression(6)
  .entry('config.json', JSON.stringify({ name: 'myapp' }))
  .entry('readme.txt', 'Hello World!')
  .toFile('./backup.tar.gz');
 ```
-// Process each file in the archive
+### Extract with filtering and path manipulation
 streamOfFiles.on('data', async (streamFile) => {
  console.log(`Processing ${streamFile.relativeFilePath}`);
  const readStream = await streamFile.createReadStream();
  // Handle individual file stream
 });
-streamOfFiles.on('end', () => {
+```typescript
-  console.log('Extraction complete');
+import { SmartArchive } from '@push.rocks/smartarchive';
-});
+
 // Extract only JSON files, stripping the first path component
 await SmartArchive.create()
  .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz')
  .stripComponents(1)           // Remove 'package/' prefix
  .include(/\.json$/)           // Only extract JSON files
  .extract('./node_modules/lodash');
 ```
 ## Core Concepts 💡
-### Archive Sources
+### Fluent Builder Pattern
-`SmartArchive` accepts archives from three sources:
+`SmartArchive` uses a fluent builder pattern where you chain methods to configure the operation:
-| Source | Method | Use Case |
+```typescript
-|--------|--------|----------|
+SmartArchive.create()     // Start a new builder
-| **URL** | `SmartArchive.fromArchiveUrl(url)` | Download and process archives from the web |
+  .source(...)            // Configure source (extraction mode)
-| **File** | `SmartArchive.fromArchiveFile(path)` | Load archives from the local filesystem |
+  .options(...)           // Set options
-| **Stream** | `SmartArchive.fromArchiveStream(stream)` | Process archives from any Node.js stream |
+  .terminal()             // Execute the operation
 ```
-### Export Destinations
+### Two Operating Modes
-| Destination | Method | Use Case |
+**Extraction Mode** - Load an existing archive and extract/analyze it:
-|-------------|--------|----------|
+```typescript
-| **Filesystem** | `exportToFs(targetDir, fileName?)` | Extract directly to a directory |
+SmartArchive.create()
-| **Stream of files** | `exportToStreamOfStreamFiles()` | Process files individually as `StreamFile` objects |
+  .url('...')        // or .file(), .stream(), .buffer()
  .extract('./out')  // or .toSmartFiles(), .list(), etc.
 ```
 **Creation Mode** - Build a new archive from entries:
 ```typescript
 SmartArchive.create()
  .format('tar.gz')  // Set output format
  .entry(...)        // Add files
  .toFile('./out.tar.gz')  // or .toBuffer(), .toStream()
 ```
 > ⚠️ **Note:** You cannot mix extraction and creation methods in the same chain.
 ## API Reference 📚
 ### Source Methods (Extraction Mode)
 | Method | Description |
 |--------|-------------|
 | `.url(url)` | Load archive from a URL |
 | `.file(path)` | Load archive from local filesystem |
 | `.stream(readable)` | Load archive from any Node.js readable stream |
 | `.buffer(buffer)` | Load archive from an in-memory Buffer |
 ### Creation Methods (Creation Mode)
 | Method | Description |
 |--------|-------------|
 | `.format(fmt)` | Set output format: `'tar'`, `'tar.gz'`, `'tgz'`, `'zip'`, `'gz'` |
 | `.compression(level)` | Set compression level (0-9, default: 6) |
 | `.entry(path, content)` | Add a file entry (string or Buffer content) |
 | `.entries(array)` | Add multiple entries at once |
 | `.directory(path, archiveBase?)` | Add entire directory contents |
 | `.addSmartFile(file, path?)` | Add a SmartFile instance |
 | `.addStreamFile(file, path?)` | Add a StreamFile instance |
 ### Filter Methods (Both Modes)
 | Method | Description |
 |--------|-------------|
 | `.filter(predicate)` | Filter entries with custom function |
 | `.include(pattern)` | Only include entries matching regex/string pattern |
 | `.exclude(pattern)` | Exclude entries matching regex/string pattern |
 ### Extraction Options
 | Method | Description |
 |--------|-------------|
 | `.stripComponents(n)` | Strip N leading path components |
 | `.overwrite(bool)` | Overwrite existing files (default: false) |
 | `.fileName(name)` | Set output filename for single-file archives (gz, bz2) |
 ### Terminal Methods (Extraction)
 | Method | Returns | Description |
 |--------|---------|-------------|
 | `.extract(targetDir)` | `Promise<void>` | Extract to filesystem directory |
 | `.toStreamFiles()` | `Promise<StreamIntake<StreamFile>>` | Get stream of StreamFile objects |
 | `.toSmartFiles()` | `Promise<SmartFile[]>` | Get in-memory SmartFile array |
 | `.extractFile(path)` | `Promise<SmartFile \| null>` | Extract single file by path |
 | `.list()` | `Promise<IArchiveEntryInfo[]>` | List all entries |
 | `.analyze()` | `Promise<IArchiveInfo>` | Get archive metadata |
 | `.hasFile(path)` | `Promise<boolean>` | Check if file exists |
 ### Terminal Methods (Creation)
 | Method | Returns | Description |
 |--------|---------|-------------|
 | `.build()` | `Promise<SmartArchive>` | Build the archive (implicit in other terminals) |
 | `.toBuffer()` | `Promise<Buffer>` | Get archive as Buffer |
 | `.toFile(path)` | `Promise<void>` | Write archive to disk |
 | `.toStream()` | `Promise<Readable>` | Get raw archive stream |
 ## Usage Examples 🔨
-### Working with ZIP files
+### Download and extract npm packages
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
-// Extract a ZIP file
+const pkg = await SmartArchive.create()
-const zipArchive = await SmartArchive.fromArchiveFile('./archive.zip');
+  .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz');
 await zipArchive.exportToFs('./output');
-// Stream ZIP contents for processing
+// Quick inspection of package.json
-const fileStream = await zipArchive.exportToStreamOfStreamFiles();
+const pkgJson = await pkg.extractFile('package/package.json');
 if (pkgJson) {
  const metadata = JSON.parse(pkgJson.contents.toString());
  console.log(`Package: ${metadata.name}@${metadata.version}`);
 }
 // Full extraction with path normalization
 await SmartArchive.create()
  .url('https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz')
  .stripComponents(1)
  .extract('./node_modules/lodash');
 ```
 ### Create ZIP archive
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
 await SmartArchive.create()
  .format('zip')
  .compression(9)
  .entry('report.txt', 'Monthly sales report...')
  .entry('data/figures.json', JSON.stringify({ revenue: 10000 }))
  .entry('images/logo.png', pngBuffer)
  .toFile('./report-bundle.zip');
 ```
 ### Create TAR.GZ from directory
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
 await SmartArchive.create()
  .format('tar.gz')
  .compression(9)
  .directory('./src', 'source')  // Archive ./src as 'source/' in archive
  .toFile('./project-backup.tar.gz');
 ```
 ### Stream-based extraction
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
 const fileStream = await SmartArchive.create()
  .file('./large-archive.tar.gz')
  .toStreamFiles();
 fileStream.on('data', async (streamFile) => {
  console.log(`Processing: ${streamFile.relativeFilePath}`);
  if (streamFile.relativeFilePath.endsWith('.json')) {
-    const readStream = await streamFile.createReadStream();
+    const content = await streamFile.getContentAsBuffer();
-    // Process JSON files from the archive
+    const data = JSON.parse(content.toString());
    // Process JSON data...
  }
 });
 fileStream.on('end', () => {
  console.log('Extraction complete');
 });
 ```
-### Working with TAR archives
+### Filter specific file types
 ```typescript
-import { SmartArchive, TarTools } from '@push.rocks/smartarchive';
+import { SmartArchive } from '@push.rocks/smartarchive';
-// Extract a .tar.gz file
+// Extract only TypeScript files
-const tarGzArchive = await SmartArchive.fromArchiveFile('./archive.tar.gz');
+const tsFiles = await SmartArchive.create()
-await tarGzArchive.exportToFs('./extracted');
+  .url('https://example.com/project.tar.gz')
  .include(/\.ts$/)
  .exclude(/node_modules/)
  .toSmartFiles();
 for (const file of tsFiles) {
  console.log(`${file.relative}: ${file.contents.length} bytes`);
 }
 ```
 ### Analyze archive without extraction
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
 const archive = SmartArchive.create()
  .file('./unknown-archive.tar.gz');
 // Get format info
 const info = await archive.analyze();
 console.log(`Format: ${info.format}`);
 console.log(`Compressed: ${info.isCompressed}`);
 // List contents
 const entries = await archive.list();
 for (const entry of entries) {
  console.log(`${entry.path} (${entry.isDirectory ? 'dir' : 'file'})`);
 }
 // Check for specific file
 if (await archive.hasFile('package.json')) {
  const pkgFile = await archive.extractFile('package.json');
  console.log(pkgFile?.contents.toString());
 }
 ```
 ### Working with GZIP files
 ```typescript
 import { SmartArchive, GzipTools } from '@push.rocks/smartarchive';
 // Decompress a .gz file
 await SmartArchive.create()
  .file('./data.json.gz')
  .fileName('data.json')  // Specify output name (gzip doesn't store filename)
  .extract('./decompressed');
 // Use GzipTools directly for compression/decompression
 const gzipTools = new GzipTools();
 // Compress a buffer
 const compressed = await gzipTools.compress(Buffer.from('Hello World'), 9);
 const decompressed = await gzipTools.decompress(compressed);
 // Synchronous operations
 const compressedSync = gzipTools.compressSync(inputBuffer, 6);
 const decompressedSync = gzipTools.decompressSync(compressedSync);
 // Streaming
 const compressStream = gzipTools.getCompressionStream(6);
 const decompressStream = gzipTools.getDecompressionStream();
 createReadStream('./input.txt')
  .pipe(compressStream)
  .pipe(createWriteStream('./output.gz'));
 ```
 ### Working with TAR archives directly
 ```typescript
 import { TarTools } from '@push.rocks/smartarchive';
 // Create a TAR archive using TarTools directly
 const tarTools = new TarTools();
 // Create a TAR archive manually
 const pack = await tarTools.getPackStream();
 // Add files to the pack
 await tarTools.addFileToPack(pack, {
  fileName: 'hello.txt',
  content: 'Hello, World!'
@@ -131,262 +331,56 @@ await tarTools.addFileToPack(pack, {
  content: Buffer.from(JSON.stringify({ foo: 'bar' }))
 });
 // Finalize and pipe to destination
 pack.finalize();
 pack.pipe(createWriteStream('./output.tar'));
 // Pack a directory to TAR.GZ buffer
 const tgzBuffer = await tarTools.packDirectoryToTarGz('./src', 6);
 // Pack a directory to TAR.GZ stream
 const tgzStream = await tarTools.packDirectoryToTarGzStream('./src');
 ```
-### Pack a directory into TAR
+### Working with ZIP archives directly
 ```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';
 // 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)
+// Create a ZIP archive from entries
-const compressor = zipTools.getCompressionStream();
+const zipBuffer = await zipTools.createZip([
  { archivePath: 'readme.txt', content: 'Hello!' },
  { archivePath: 'data.bin', content: Buffer.from([0x00, 0x01, 0x02]) }
 ], 6);
-// Get decompression stream (for extracting ZIP)
+// Extract a ZIP buffer
-const decompressor = zipTools.getDecompressionStream();
+const entries = await zipTools.extractZip(zipBuffer);
 for (const entry of entries) {
  console.log(`${entry.path}: ${entry.content.length} bytes`);
 }
 ```
-### GzipTools Class
+### In-memory round-trip
 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 {
+// Create archive in memory
-  const archive = await SmartArchive.fromArchiveUrl('https://example.com/file.zip');
+const archive = await SmartArchive.create()
-  await archive.exportToFs('./output');
+  .format('tar.gz')
-} catch (error) {
+  .entry('config.json', JSON.stringify({ version: '1.0.0' }))
-  if (error.code === 'ENOENT') {
+  .build();
-    console.error('Archive file not found');
+
-  } else if (error.code === 'EACCES') {
+const buffer = await archive.toBuffer();
-    console.error('Permission denied');
+
-  } else if (error.message.includes('fetch')) {
+// Extract from buffer
-    console.error('Network error downloading archive');
+const files = await SmartArchive.create()
-  } else {
+  .buffer(buffer)
-    console.error('Archive extraction failed:', error.message);
+  .toSmartFiles();
-  }
+
 for (const file of files) {
  console.log(`${file.relative}: ${file.contents.toString()}`);
 }
 ```
@@ -395,51 +389,139 @@ try {
 ### CI/CD: Download & Extract Build Artifacts
 ```typescript
-const artifacts = await SmartArchive.fromArchiveUrl(
+const artifacts = await SmartArchive.create()
-  `${CI_SERVER}/artifacts/build-${BUILD_ID}.zip`
+  .url(`${CI_SERVER}/artifacts/build-${BUILD_ID}.zip`)
-);
+  .stripComponents(1)
-await artifacts.exportToFs('./dist');
+  .extract('./dist');
 ```
-### Backup System: Restore from Archive
+### Backup System
 ```typescript
-const backup = await SmartArchive.fromArchiveFile('./backup-2024.tar.gz');
+// Create backup
-await backup.exportToFs('/restore/location');
+await SmartArchive.create()
  .format('tar.gz')
  .compression(9)
  .directory('./data')
  .toFile(`./backups/backup-${Date.now()}.tar.gz`);
 // Restore backup
 await SmartArchive.create()
  .file('./backups/backup-latest.tar.gz')
  .extract('/restore/location');
 ```
-### NPM Package Inspection
+### Bundle files for HTTP download
 ```typescript
-const pkg = await SmartArchive.fromArchiveUrl(
+import { SmartArchive } from '@push.rocks/smartarchive';
  'https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz'
 );
 const files = await pkg.exportToStreamOfStreamFiles();
-files.on('data', async (file) => {
+// Express/Fastify handler
-  if (file.relativeFilePath.includes('package.json')) {
+app.get('/download-bundle', async (req, res) => {
-    const stream = await file.createReadStream();
+  const buffer = await SmartArchive.create()
-    // Read and analyze package.json
+    .format('zip')
-  }
+    .entry('report.pdf', pdfBuffer)
    .entry('data.xlsx', excelBuffer)
    .entry('images/chart.png', chartBuffer)
    .toBuffer();
  res.setHeader('Content-Type', 'application/zip');
  res.setHeader('Content-Disposition', 'attachment; filename=report-bundle.zip');
  res.send(buffer);
 });
 ```
 ### Data Pipeline: Process Compressed Datasets
 ```typescript
-const dataset = await SmartArchive.fromArchiveUrl(
+const fileStream = await SmartArchive.create()
-  'https://data.source/dataset.tar.gz'
+  .url('https://data.source/dataset.tar.gz')
-);
+  .toStreamFiles();
-const files = await dataset.exportToStreamOfStreamFiles();
+fileStream.on('data', async (file) => {
 files.on('data', async (file) => {
  if (file.relativeFilePath.endsWith('.csv')) {
-    const stream = await file.createReadStream();
+    const content = await file.getContentAsBuffer();
-    // Stream CSV processing
+    // Stream CSV processing...
  }
 });
 ```
 ## Supported Formats 📋
 | Format | Extension(s) | Extract | Create |
 |--------|--------------|---------|--------|
 | TAR | `.tar` | ✅ | ✅ |
 | TAR.GZ / TGZ | `.tar.gz`, `.tgz` | ✅ | ✅ |
 | ZIP | `.zip` | ✅ | ✅ |
 | GZIP | `.gz` | ✅ | ✅ |
 | BZIP2 | `.bz2` | ✅ | ❌ |
 ## Type Definitions
 ```typescript
 // Supported archive formats
 type TArchiveFormat = 'tar' | 'tar.gz' | 'tgz' | 'zip' | 'gz' | 'bz2';
 // Compression level (0 = none, 9 = maximum)
 type TCompressionLevel = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
 // Entry for creating archives
 interface IArchiveEntry {
  archivePath: string;
  content: string | Buffer | Readable | SmartFile | StreamFile;
  size?: number;
  mode?: number;
  mtime?: Date;
 }
 // Information about an archive entry
 interface IArchiveEntryInfo {
  path: string;
  size: number;
  isDirectory: boolean;
  isFile: boolean;
  mtime?: Date;
  mode?: number;
 }
 // Archive analysis result
 interface IArchiveInfo {
  format: TArchiveFormat | null;
  isCompressed: boolean;
  isArchive: boolean;
  entries?: IArchiveEntryInfo[];
 }
 ```
 ## Performance Tips 🏎️
 1. **Use streaming for large files** – `.toStreamFiles()` processes entries one at a time without loading the entire archive
 2. **Provide byte lengths when known** – When using TarTools directly, provide `byteLength` for better performance
 3. **Choose appropriate compression** – Use 1-3 for speed, 6 (default) for balance, 9 for maximum compression
 4. **Filter early** – Use `.include()`/`.exclude()` to skip unwanted entries before processing
 ## Error Handling 🛡️
 ```typescript
 import { SmartArchive } from '@push.rocks/smartarchive';
 try {
  await SmartArchive.create()
    .url('https://example.com/file.zip')
    .extract('./output');
 } catch (error) {
  if (error.message.includes('No source configured')) {
    console.error('Forgot to specify source');
  } else if (error.message.includes('No format specified')) {
    console.error('Forgot to set format for creation');
  } else if (error.message.includes('extraction mode')) {
    console.error('Cannot mix extraction and creation methods');
  } else {
    console.error('Archive operation failed:', error.message);
  }
 }
 ```
 ## License and Legal Information
 This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository.
@@ -450,6 +532,10 @@ This repository contains open-source code that is licensed under the MIT License
 This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH and are not included within the scope of the MIT license granted herein. Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines, and any usage must be approved in writing by Task Venture Capital GmbH.
 ### Issue Reporting and Security
 For reporting bugs, issues, or security vulnerabilities, please visit [community.foss.global/](https://community.foss.global/). This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a [code.foss.global/](https://code.foss.global/) account to submit Pull Requests directly.
 ### Company Information
 Task Venture Capital GmbH
--- a/test/test.gzip.node+deno.ts
+++ b/test/test.gzip.node+deno.ts
@@ -37,16 +37,14 @@ tap.test('should create and extract a gzip file', async () => {
    Buffer.from(compressed)
  );
-  // Now test extraction using SmartArchive
+  // Now test extraction using SmartArchive fluent API
  const gzipArchive = await smartarchive.SmartArchive.fromArchiveFile(
    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.exportToFs(extractPath, 'test-file.txt');
+  await smartarchive.SmartArchive.create()
    .file(plugins.path.join(testPaths.gzipTestDir, gzipFileName))
    .fileName('test-file.txt')
    .extract(extractPath);
  // Read the extracted file
  const extractedContent = await plugins.fsPromises.readFile(
@@ -76,12 +74,11 @@ tap.test('should handle gzip stream extraction', async () => {
    plugins.path.join(testPaths.gzipTestDir, gzipFileName)
  );
-  // Test extraction using SmartArchive from stream
+  // Test extraction using SmartArchive from stream with fluent API
  const gzipArchive = await smartarchive.SmartArchive.fromArchiveStream(gzipStream);
  // Export to stream and collect the result
  const streamFiles: any[] = [];
-  const resultStream = await gzipArchive.exportToStreamOfStreamFiles();
+  const resultStream = await smartarchive.SmartArchive.create()
    .stream(gzipStream)
    .toStreamFiles();
  await new Promise<void>((resolve, reject) => {
    resultStream.on('data', (streamFile) => {
@@ -112,7 +109,6 @@ tap.test('should handle gzip stream extraction', async () => {
 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
@@ -120,8 +116,6 @@ tap.test('should handle gzip files with original filename in header', async () =
  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);
@@ -133,15 +127,14 @@ tap.test('should handle gzip files with original filename in header', async () =
    gzipBuffer
  );
-  // Test extraction
+  // Test extraction with fluent API
  const gzipArchive = await smartarchive.SmartArchive.fromArchiveFile(
    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.exportToFs(extractPath, 'compressed.txt');
+  await smartarchive.SmartArchive.create()
    .file(plugins.path.join(testPaths.gzipTestDir, gzipFileName))
    .fileName('compressed.txt')
    .extract(extractPath);
  // Check if file was extracted (name might be derived from archive name)
  const files = await plugins.listFileTree(extractPath, '**/*');
@@ -169,15 +162,14 @@ tap.test('should handle large gzip files', async () => {
    Buffer.from(compressed)
  );
-  // Test extraction
+  // Test extraction with fluent API
  const gzipArchive = await smartarchive.SmartArchive.fromArchiveFile(
    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.exportToFs(extractPath, 'large-file.txt');
+  await smartarchive.SmartArchive.create()
    .file(plugins.path.join(testPaths.gzipTestDir, gzipFileName))
    .fileName('large-file.txt')
    .extract(extractPath);
  // Verify the extracted content
  const files = await plugins.listFileTree(extractPath, '**/*');
@@ -195,14 +187,13 @@ 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
+  // Download and extract the archive with fluent API
  const testArchive = await smartarchive.SmartArchive.fromArchiveUrl(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 smartarchive.SmartArchive.create()
-  await testArchive.exportToFs(extractPath);
+    .url(testUrl)
    .extract(extractPath);
  // Verify extraction worked
  const files = await plugins.listFileTree(extractPath, '**/*');
@@ -270,16 +261,11 @@ tap.test('should handle gzip extraction fully in memory', async () => {
  const fflate = await import('fflate');
  const compressed = fflate.gzipSync(Buffer.from(testContent));
-  // Create a stream from the compressed data
+  // Process through SmartArchive without touching filesystem using fluent API
  const { Readable } = await import('node:stream');
  const compressedStream = Readable.from(Buffer.from(compressed));
  // Process through SmartArchive without touching filesystem
  const gzipArchive = await smartarchive.SmartArchive.fromArchiveStream(compressedStream);
  // Export to stream of stream files (in memory)
  const streamFiles: plugins.smartfile.StreamFile[] = [];
-  const resultStream = await gzipArchive.exportToStreamOfStreamFiles();
+  const resultStream = await smartarchive.SmartArchive.create()
    .buffer(Buffer.from(compressed))
    .toStreamFiles();
  await new Promise<void>((resolve, reject) => {
    resultStream.on('data', (streamFile: plugins.smartfile.StreamFile) => {
@@ -318,16 +304,11 @@ tap.test('should handle real tgz file fully in memory', async (tools) => {
  const tgzBuffer = Buffer.from(await response.arrayBuffer());
  console.log(`  Downloaded ${tgzBuffer.length} bytes into memory`);
-  // Create stream from buffer
+  // Process through SmartArchive in memory with fluent API
  const { Readable: Readable2 } = await import('node:stream');
  const tgzStream = Readable2.from(tgzBuffer);
  // Process through SmartArchive in memory
  const archive = await smartarchive.SmartArchive.fromArchiveStream(tgzStream);
  // Export to stream of stream files (in memory)
  const streamFiles: plugins.smartfile.StreamFile[] = [];
-  const resultStream = await archive.exportToStreamOfStreamFiles();
+  const resultStream = await smartarchive.SmartArchive.create()
    .buffer(tgzBuffer)
    .toStreamFiles();
  await new Promise<void>((resolve, reject) => {
    let timeout: NodeJS.Timeout;
--- a/test/test.node+deno.ts
+++ b/test/test.node+deno.ts
@@ -32,21 +32,209 @@ tap.preTask('should prepare downloads', async (tools) => {
  );
 });
-tap.test('should extract existing files on disk', async () => {
+tap.test('should extract existing files on disk using fluent API', async () => {
-  const testSmartarchive = await smartarchive.SmartArchive.fromArchiveUrl(
+  await smartarchive.SmartArchive.create()
-    'https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz',
+    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
-  );
+    .extract(testPaths.nogitDir);
-  await testSmartarchive.exportToFs(testPaths.nogitDir);
+});
 tap.test('should extract from file using fluent API', async () => {
  const extractPath = plugins.path.join(testPaths.nogitDir, 'from-file-test');
  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
  await smartarchive.SmartArchive.create()
    .file(plugins.path.join(testPaths.nogitDir, 'test.tgz'))
    .extract(extractPath);
  const files = await plugins.listFileTree(extractPath, '**/*');
  expect(files.length).toBeGreaterThan(0);
 });
 tap.test('should extract with stripComponents using fluent API', async () => {
  const extractPath = plugins.path.join(testPaths.nogitDir, 'strip-test');
  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
  await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .stripComponents(1)
    .extract(extractPath);
  const files = await plugins.listFileTree(extractPath, '**/*');
  expect(files.length).toBeGreaterThan(0);
  // Files should not have 'package/' prefix
  const hasPackagePrefix = files.some(f => f.startsWith('package/'));
  expect(hasPackagePrefix).toBeFalse();
 });
 tap.test('should extract with filter using fluent API', async () => {
  const extractPath = plugins.path.join(testPaths.nogitDir, 'filter-test');
  await plugins.fsPromises.mkdir(extractPath, { recursive: true });
  await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .filter(entry => entry.path.endsWith('.json'))
    .extract(extractPath);
  const files = await plugins.listFileTree(extractPath, '**/*');
  // All extracted files should be JSON
  for (const file of files) {
    expect(file.endsWith('.json')).toBeTrue();
  }
 });
 tap.test('should list archive entries using fluent API', async () => {
  const entries = await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .list();
  expect(entries.length).toBeGreaterThan(0);
  const hasPackageJson = entries.some(e => e.path.includes('package.json'));
  expect(hasPackageJson).toBeTrue();
 });
 tap.test('should create archive using fluent API', async () => {
  const archive = await smartarchive.SmartArchive.create()
    .format('tar.gz')
    .compression(9)
    .entry('hello.txt', 'Hello World!')
    .entry('config.json', JSON.stringify({ name: 'test', version: '1.0.0' }));
  expect(archive).toBeInstanceOf(smartarchive.SmartArchive);
  const buffer = await archive.toBuffer();
  expect(buffer.length).toBeGreaterThan(0);
 });
 tap.test('should create and write archive to file using fluent API', async () => {
  const outputPath = plugins.path.join(testPaths.nogitDir, 'created-archive.tar.gz');
  await smartarchive.SmartArchive.create()
    .format('tar.gz')
    .entry('readme.txt', 'This is a test archive')
    .entry('data/info.json', JSON.stringify({ created: new Date().toISOString() }))
    .toFile(outputPath);
  // Verify file was created
  const stats = await plugins.fsPromises.stat(outputPath);
  expect(stats.size).toBeGreaterThan(0);
  // Verify we can extract it
  const extractPath = plugins.path.join(testPaths.nogitDir, 'verify-created');
  await smartarchive.SmartArchive.create()
    .file(outputPath)
    .extract(extractPath);
  const files = await plugins.listFileTree(extractPath, '**/*');
  expect(files).toContain('readme.txt');
 });
 tap.test('should create ZIP archive using fluent API', async () => {
  const outputPath = plugins.path.join(testPaths.nogitDir, 'created-archive.zip');
  await smartarchive.SmartArchive.create()
    .format('zip')
    .entry('file1.txt', 'Content 1')
    .entry('file2.txt', 'Content 2')
    .toFile(outputPath);
  // Verify file was created
  const stats = await plugins.fsPromises.stat(outputPath);
  expect(stats.size).toBeGreaterThan(0);
 });
 tap.test('should extract to SmartFiles using fluent API', async () => {
  const smartFiles = await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .toSmartFiles();
  expect(smartFiles.length).toBeGreaterThan(0);
  const packageJson = smartFiles.find(f => f.relative.includes('package.json'));
  expect(packageJson).toBeDefined();
 });
 tap.test('should analyze archive using fluent API', async () => {
  const info = await smartarchive.SmartArchive.create()
    .file(plugins.path.join(testPaths.nogitDir, 'test.tgz'))
    .analyze();
  expect(info.isArchive).toBeTrue();
  expect(info.isCompressed).toBeTrue();
  expect(info.format).toEqual('gz');
 });
 tap.test('should check if file exists in archive using fluent API', async () => {
  const hasPackageJson = await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .hasFile('package.json');
  expect(hasPackageJson).toBeTrue();
 });
 tap.test('should extract single file using fluent API', async () => {
  const packageJson = await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .extractFile('package.json');
  expect(packageJson).toBeDefined();
  expect(packageJson!.contents.toString()).toContain('websetup');
 });
 tap.test('should handle include/exclude patterns', async () => {
  const smartFiles = await smartarchive.SmartArchive.create()
    .url('https://verdaccio.lossless.digital/@pushrocks%2fwebsetup/-/websetup-2.0.14.tgz')
    .include(/\.json$/)
    .toSmartFiles();
  expect(smartFiles.length).toBeGreaterThan(0);
  for (const file of smartFiles) {
    expect(file.relative.endsWith('.json')).toBeTrue();
  }
 });
 tap.test('should throw error when mixing modes', async () => {
  let threw = false;
  try {
    smartarchive.SmartArchive.create()
      .url('https://example.com/archive.tgz')
      .entry('file.txt', 'content'); // This should throw
  } catch (e) {
    threw = true;
    expect((e as Error).message).toContain('extraction mode');
  }
  expect(threw).toBeTrue();
 });
 tap.test('should throw error when no source configured', async () => {
  let threw = false;
  try {
    await smartarchive.SmartArchive.create().extract('./output');
  } catch (e) {
    threw = true;
    expect((e as Error).message).toContain('No source configured');
  }
  expect(threw).toBeTrue();
 });
 tap.test('should throw error when no format configured', async () => {
  let threw = false;
  try {
    await smartarchive.SmartArchive.create()
      .entry('file.txt', 'content')
      .toBuffer();
  } catch (e) {
    threw = true;
    expect((e as Error).message).toContain('No format specified');
  }
  expect(threw).toBeTrue();
 });
 tap.skip.test('should extract a b2zip', async () => {
  const dataUrl =
    'https://daten.offeneregister.de/de_companies_ocdata.jsonl.bz2';
-  const testArchive = await smartarchive.SmartArchive.fromArchiveUrl(dataUrl);
+  await smartarchive.SmartArchive.create()
-  await testArchive.exportToFs(
+    .url(dataUrl)
-    plugins.path.join(testPaths.nogitDir, 'de_companies_ocdata.jsonl'),
+    .extract(plugins.path.join(testPaths.nogitDir, 'de_companies_ocdata.jsonl'));
    'data.jsonl',
  );
 });
-await tap.start();
+export default tap.start();
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
 */
 export const commitinfo = {
  name: '@push.rocks/smartarchive',
-  version: '4.2.4',
+  version: '5.0.1',
  description: 'A library for working with archive files, providing utilities for compressing and decompressing data.'
 }
--- a/ts/bzip2/bititerator.ts
+++ b/ts/bzip2/bititerator.ts
@@ -1,44 +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.
+const BITMASK = [0, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff] as const;
-// takes a buffer iterator as input
+
-export function bitIterator(nextBuffer: () => Buffer) {
+/**
-  var bit = 0,
+ * Creates a bit reader function for BZIP2 decompression.
-    byte = 0;
+ * Takes a buffer iterator as input and returns a function that reads bits.
-  var bytes = nextBuffer();
+ */
-  var f = function (n) {
+export function bitIterator(nextBuffer: () => Buffer): IBitReader {
-    if (n === null && bit != 0) {
+  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;
    }
-    var result = 0;
+
-    while (n > 0) {
+    let result = 0;
    let remaining = n as number;
    while (remaining > 0) {
      if (byte >= bytes.length) {
        byte = 0;
        bytes = nextBuffer();
      }
-      var left = 8 - bit;
+
-      if (bit === 0 && n > 0)
+      const left = 8 - bit;
-        // @ts-ignore
+
-        f.bytesRead++;
+      if (bit === 0 && remaining > 0) {
-      if (n >= left) {
+        _bytesRead++;
      }
      if (remaining >= left) {
        result <<= left;
        result |= BITMASK[left] & bytes[byte++];
        bit = 0;
-        n -= left;
+        remaining -= left;
      } else {
-        result <<= n;
+        result <<= remaining;
-        result |=
+        result |= (bytes[byte] & (BITMASK[remaining] << (8 - remaining - bit))) >> (8 - remaining - bit);
-          (bytes[byte] & (BITMASK[n] << (8 - n - bit))) >> (8 - n - bit);
+        bit += remaining;
-        bit += n;
+        remaining = 0;
        n = 0;
      }
    }
    return result;
-  };
+  } as IBitReader;
-  // @ts-ignore
+
-  f.bytesRead = 0;
+  Object.defineProperty(reader, 'bytesRead', {
-  return f;
+    get: () => _bytesRead,
    enumerable: true,
  });
  return reader;
 }
--- a/ts/bzip2/bzip2.ts
+++ b/ts/bzip2/bzip2.ts
@@ -1,23 +1,22 @@
-export class Bzip2Error extends Error {
+import { Bzip2Error, BZIP2_ERROR_CODES } from '../errors.js';
-  public name: string = 'Bzip2Error';
+import type { IBitReader, IHuffmanGroup } from '../interfaces.js';
  public message: string;
  public stack = new Error().stack;
-  constructor(messageArg: string) {
+// Re-export Bzip2Error for backward compatibility
-    super();
+export { Bzip2Error };
-    this.message = messageArg;
+
-  }
+/**
 * 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) {
+ * BZIP2 decompression implementation
-    throw new Bzip2Error(message);
+ */
  },
 };
 export class Bzip2 {
-  public Bzip2Error = Bzip2Error;
+  // CRC32 lookup table for BZIP2
-  public crcTable = [
+  public readonly crcTable: readonly number[] = [
    0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
    0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
    0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
@@ -63,14 +62,24 @@ export class Bzip2 {
    0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4,
  ];
-  array = function (bytes) {
+  // State arrays initialized in header()
-    var bit = 0,
+  private byteCount!: Int32Array;
-      byte = 0;
+  private symToByte!: Uint8Array;
-    var BITMASK = [0, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff];
+  private mtfSymbol!: Int32Array;
-    return function (n) {
+  private selectors!: Uint8Array;
-      var result = 0;
+
  /**
   * 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) {
-        var left = 8 - bit;
+        const left = 8 - bit;
        if (n >= left) {
          result <<= left;
          result |= BITMASK[left] & bytes[byte++];
@@ -78,234 +87,341 @@ export class Bzip2 {
          n -= left;
        } else {
          result <<= n;
-          result |=
+          result |= (bytes[byte] & (BITMASK[n] << (8 - n - bit))) >> (8 - n - bit);
            (bytes[byte] & (BITMASK[n] << (8 - n - bit))) >> (8 - n - bit);
          bit += n;
          n = 0;
        }
      }
      return result;
    };
-  };
+  }
-  simple = function (srcbuffer, stream) {
+  /**
-    var bits = this.array(srcbuffer);
+   * Simple decompression from a buffer
-    var size = this.header(bits);
+   */
-    var ret = false;
+  simple(srcbuffer: Uint8Array | Buffer, stream: (byte: number) => void): void {
-    var bufsize = 100000 * size;
+    const bits = this.array(srcbuffer);
-    var buf = new Int32Array(bufsize);
+    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);
+      ret = this.decompress(bits as IBitReader, stream, buf, bufsize, ret);
-    } while (!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');
+    if (bits(8 * 3) !== 4348520) {
-
+      throwError('No BZIP2 magic number found at start of stream', BZIP2_ERROR_CODES.NO_MAGIC_NUMBER);
    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
      bits(null);
      return null; // reset streamCRC for next call
    }
-    if (h != '314159265359') messageArg.Error('eek not valid bzip data');
+
-    var crcblock = bits(32) | 0; // CRC code
+    const blockSize = (bits(8) as number) - 48;
-    if (bits(1)) messageArg.Error('unsupported obsolete version');
+    if (blockSize < 1 || blockSize > 9) {
-    var origPtr = bits(24);
+      throwError('Invalid BZIP2 archive: block size must be 1-9', BZIP2_ERROR_CODES.INVALID_ARCHIVE);
-    if (origPtr > bufsize)
+    }
-      messageArg.Error('Initial position larger than buffer size');
+    return blockSize;
-    var t = bits(16);
+  }
-    var symTotal = 0;
+
-    for (i = 0; i < 16; i++) {
+  /**
-      if (t & (1 << (15 - i))) {
+   * Decompress a BZIP2 block
-        var k = bits(16);
+   */
-        for (j = 0; j < 16; j++) {
+  decompress(
-          if (k & (1 << (15 - j))) {
+    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;
    }
    // Verify block signature (pi digits)
    if (headerHex !== '314159265359') {
      throwError('Invalid block header: expected pi signature (0x314159265359)', BZIP2_ERROR_CODES.INVALID_BLOCK_DATA);
    }
    const crcblock = bits(32) as number | 0;
    if (bits(1)) {
      throwError('Unsupported obsolete BZIP2 format version', BZIP2_ERROR_CODES.INVALID_ARCHIVE);
    }
    const origPtr = bits(24) as number;
    if (origPtr > bufsize) {
      throwError('Initial position larger than buffer size', BZIP2_ERROR_CODES.BUFFER_OVERFLOW);
    }
    // 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 groupCount = bits(3);
+    // Read Huffman groups
-    if (groupCount < 2 || groupCount > 6) messageArg.Error('another error');
+    const groupCount = bits(3) as number;
-    var nSelectors = bits(15);
+    if (groupCount < 2 || groupCount > 6) {
-    if (nSelectors == 0) messageArg.Error('meh');
+      throwError('Invalid group count: must be between 2 and 6', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
-    for (var i = 0; i < groupCount; i++) this.mtfSymbol[i] = i;
+    }
-    for (var i = 0; i < nSelectors; i++) {
+    const nSelectors = bits(15) as number;
-      for (var j = 0; bits(1); j++)
+    if (nSelectors === 0) {
-        if (j >= groupCount) messageArg.Error('whoops another error');
+      throwError('Invalid selector count: cannot be zero', BZIP2_ERROR_CODES.INVALID_SELECTOR);
-      var uc = this.mtfSymbol[j];
+    }
-      for (var k: any = j - 1; k >= 0; k--) {
+
    // Initialize MTF symbol array
    for (let i = 0; i < groupCount; i++) {
      this.mtfSymbol[i] = i;
    }
    // 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;
    }
-    var symCount = symTotal + 2;
+    // Build Huffman tables
-    var groups = [];
+    const symCount = symTotal + 2;
-    var length = new Uint8Array(MAX_SYMBOLS),
+    const groups: IHuffmanGroup[] = [];
-      temp = new Uint16Array(MAX_HUFCODE_BITS + 1);
+    const length = new Uint8Array(MAX_SYMBOLS);
    const temp = new Uint16Array(MAX_HUFCODE_BITS + 1);
-    var hufGroup;
+    for (let j = 0; j < groupCount; j++) {
-
+      let t = bits(5) as number;
-    for (var j = 0; j < groupCount; j++) {
+      for (let i = 0; i < symCount; i++) {
      t = bits(5); //lengths
      for (var i = 0; i < symCount; i++) {
        while (true) {
-          if (t < 1 || t > MAX_HUFCODE_BITS)
+          if (t < 1 || t > MAX_HUFCODE_BITS) {
-            messageArg.Error('I gave up a while ago on writing error messages');
+            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;
      }
-      var minLen, maxLen;
+
-      minLen = maxLen = length[0];
+      let minLen = length[0];
-      for (var i = 1; i < symCount; i++) {
+      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];
      }
      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;
+      const hufGroup: IHuffmanGroup = {
-      hufGroup.maxLen = maxLen;
+        permute: new Int32Array(MAX_SYMBOLS),
-      var base = hufGroup.base;
+        limit: new Int32Array(MAX_HUFCODE_BITS + 1),
-      var limit = hufGroup.limit;
+        base: new Int32Array(MAX_HUFCODE_BITS + 1),
-      var pp = 0;
+        minLen,
-      for (var i: number = minLen; i <= maxLen; i++)
+        maxLen,
-        for (var t: any = 0; t < symCount; t++)
+      };
-          if (length[t] == i) hufGroup.permute[pp++] = t;
+      groups[j] = hufGroup;
-      for (i = minLen; i <= maxLen; i++) temp[i] = limit[i] = 0;
+
-      for (i = 0; i < symCount; i++) temp[length[i]]++;
+      const base = hufGroup.base;
-      pp = t = 0;
+      const limit = hufGroup.limit;
-      for (i = minLen; i < maxLen; i++) {
+
      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 - (t += temp[i]);
+        base[i + 1] = pp - (tt += temp[i]);
      }
      limit[maxLen] = pp + temp[maxLen] - 1;
      base[minLen] = 0;
    }
-    for (var i = 0; i < 256; i++) {
+    // Initialize for decoding
    for (let i = 0; i < 256; i++) {
      this.mtfSymbol[i] = i;
      this.byteCount[i] = 0;
    }
-    var runPos, count, symCount: number, selector;
+
-    runPos = count = symCount = selector = 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 (!symCount--) {
+      if (!symCountRemaining--) {
-        symCount = GROUP_SIZE - 1;
+        symCountRemaining = GROUP_SIZE - 1;
-        if (selector >= nSelectors)
+        if (selector >= nSelectors) {
-          messageArg.Error("meow i'm a kitty, that's an error");
+          throwError('Invalid selector index: exceeds available groups', BZIP2_ERROR_CODES.INVALID_SELECTOR);
        }
        hufGroup = groups[this.selectors[selector++]];
        base = hufGroup.base;
        limit = hufGroup.limit;
      }
-      i = hufGroup.minLen;
+
-      j = bits(i);
+      let i = hufGroup.minLen;
      let j = bits(i) as number;
      while (true) {
-        if (i > hufGroup.maxLen) messageArg.Error("rawr i'm a dinosaur");
+        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);
+        j = (j << 1) | (bits(1) as number);
      }
      j -= base[i];
-      if (j < 0 || j >= MAX_SYMBOLS) messageArg.Error("moo i'm a cow");
+      if (j < 0 || j >= MAX_SYMBOLS) {
-      var nextSym = hufGroup.permute[j];
+        throwError('Symbol index out of bounds during Huffman decoding', BZIP2_ERROR_CODES.INVALID_HUFFMAN);
-      if (nextSym == SYMBOL_RUNA || nextSym == SYMBOL_RUNB) {
+      }
      const nextSym = hufGroup.permute[j];
      if (nextSym === SYMBOL_RUNA || nextSym === SYMBOL_RUNB) {
        if (!runPos) {
          runPos = 1;
-          t = 0;
+          j = 0;
        }
-        if (nextSym == SYMBOL_RUNA) t += runPos;
+        if (nextSym === SYMBOL_RUNA) j += runPos;
-        else t += 2 * runPos;
+        else j += 2 * runPos;
        runPos <<= 1;
        continue;
      }
      if (runPos) {
        runPos = 0;
-        if (count + t > bufsize) messageArg.Error('Boom.');
+        const runLength = j;
-        uc = this.symToByte[this.mtfSymbol[0]];
+        if (count + runLength > bufsize) {
-        this.byteCount[uc] += t;
+          throwError('Run-length overflow: decoded run exceeds buffer capacity', BZIP2_ERROR_CODES.BUFFER_OVERFLOW);
        while (t--) buf[count++] = uc;
        }
        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)
+
-        messageArg.Error("I can't think of anything. Error");
+      if (count >= bufsize) {
-      i = nextSym - 1;
+        throwError('Buffer overflow: decoded data exceeds buffer capacity', BZIP2_ERROR_CODES.BUFFER_OVERFLOW);
-      uc = this.mtfSymbol[i];
+      }
-      for (var k: any = i - 1; k >= 0; k--) {
+
      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;
-      uc = this.symToByte[uc];
+      const decodedByte = this.symToByte[uc];
-      this.byteCount[uc]++;
+      this.byteCount[decodedByte]++;
-      buf[count++] = uc;
+      buf[count++] = decodedByte;
    }
-    if (origPtr < 0 || origPtr >= count)
+
-      messageArg.Error(
+    if (origPtr < 0 || origPtr >= count) {
-        "I'm a monkey and I'm throwing something at someone, namely you",
+      throwError('Invalid original pointer: position outside decoded block', BZIP2_ERROR_CODES.INVALID_POSITION);
-      );
+    }
-    var j = 0;
+
-    for (var i = 0; i < 256; i++) {
+    // Inverse BWT transform
-      k = j + this.byteCount[i];
+    let j = 0;
    for (let i = 0; i < 256; i++) {
      const k = j + this.byteCount[i];
      this.byteCount[i] = j;
      j = k;
    }
-    for (var i = 0; i < count; i++) {
+
-      uc = buf[i] & 0xff;
+    for (let i = 0; i < count; i++) {
      const uc = buf[i] & 0xff;
      buf[this.byteCount[uc]] |= i << 8;
      this.byteCount[uc]++;
    }
-    var pos = 0,
+
-      current = 0,
+    // Output decoded data
-      run = 0;
+    let pos = 0;
    let current = 0;
    let run = 0;
    if (count) {
      pos = buf[origPtr];
      current = pos & 0xff;
      pos >>= 8;
      run = -1;
    }
-    count = count;
+
-    var copies, previous, outbyte;
+    let remaining = count;
-    while (count) {
+    while (remaining) {
-      count--;
+      remaining--;
-      previous = current;
+      const previous = current;
      pos = buf[pos];
      current = pos & 0xff;
      pos >>= 8;
-      if (run++ == 3) {
+
      let copies: number;
      let outbyte: number;
      if (run++ === 3) {
        copies = current;
        outbyte = previous;
        current = -1;
@@ -313,19 +429,21 @@ export class Bzip2 {
        copies = 1;
        outbyte = current;
      }
      while (copies--) {
-        crc =
+        crc = ((crc << 8) ^ this.crcTable[((crc >> 24) ^ outbyte) & 0xff]) & 0xffffffff;
          ((crc << 8) ^ this.crcTable[((crc >> 24) ^ outbyte) & 0xff]) &
          0xffffffff; // crc32
        stream(outbyte);
      }
-      if (current != previous) run = 0;
+
      if (current !== previous) run = 0;
    }
    crc = (crc ^ -1) >>> 0;
-    if ((crc | 0) != (crcblock | 0))
+    if ((crc | 0) !== (crcblock | 0)) {
-      messageArg.Error('Error in bzip2: crc32 do not match');
+      throwError('CRC32 mismatch: block checksum verification failed', BZIP2_ERROR_CODES.CRC_MISMATCH);
-    streamCRC = (crc ^ ((streamCRC << 1) | (streamCRC >>> 31))) & 0xffffffff;
+    }
-    return streamCRC;
+
-  };
+    const newStreamCRC = (crc ^ (((streamCRC || 0) << 1) | ((streamCRC || 0) >>> 31))) & 0xffffffff;
    return newStreamCRC;
  }
 }
--- a/ts/bzip2/index.ts
+++ b/ts/bzip2/index.ts
@@ -1,51 +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 = [];
+  const bufferQueue: Buffer[] = [];
-  var hasBytes = 0;
+  let hasBytes = 0;
-  var blockSize = 0;
+  let blockSize = 0;
-  var broken = false;
+  let broken = false;
-  var done = false;
+  let bitReader: IBitReader | null = null;
-  var bitReader = null;
+  let streamCRC: number | null = null;
  var streamCRC = null;
-  function decompressBlock() {
+  function decompressBlock(): Buffer | undefined {
    if (!blockSize) {
-      blockSize = bzip2Instance.header(bitReader);
+      blockSize = bzip2Instance.header(bitReader!);
      streamCRC = 0;
-    } else {
+      return undefined;
-      var bufsize = 100000 * blockSize;
+    }
      var buf = new Int32Array(bufsize);
-      var chunk = [];
+    const bufsize = 100000 * blockSize;
-      var f = function (b) {
+    const buf = new Int32Array(bufsize);
    const chunk: number[] = [];
    const outputFunc = (b: number): void => {
      chunk.push(b);
    };
-      streamCRC = bzip2Instance.decompress(
+    streamCRC = bzip2Instance.decompress(bitReader!, outputFunc, buf, bufsize, streamCRC);
-        bitReader,
+
        f,
        buf,
        bufsize,
        streamCRC,
      );
    if (streamCRC === null) {
-        // reset for next bzip2 header
+      // Reset for next bzip2 header
      blockSize = 0;
-        return;
+      return undefined;
      } else {
        return Buffer.from(chunk);
      }
    }
    }
-  var outlength = 0;
+    return Buffer.from(chunk);
-  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) {
@@ -53,40 +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 &&
+      const threshold = 25000 + 100000 * blockSize || 4;
-        hasBytes - bitReader.bytesRead + 1 >= (25000 + 100000 * blockSize || 4)
+      while (!broken && hasBytes - bitReader.bytesRead + 1 >= threshold) {
      ) {
        //console.error('decompressing with', hasBytes - bitReader.bytesRead + 1, 'bytes in buffer');
        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) {
@@ -94,10 +95,11 @@ export function unbzip2Stream() {
        }
        await streamTools.push(result);
      }
-      if (!broken) {
+
-        if (streamCRC !== null)
+      if (!broken && streamCRC !== null) {
-          this.emit('error', new Error('input stream ended prematurely'));
+        this.emit('error', new Bzip2Error('Input stream ended prematurely', BZIP2_ERROR_CODES.PREMATURE_END));
      }
      return null;
    },
  });
 }
--- a/ts/classes.archiveanalyzer.ts
+++ b/ts/classes.archiveanalyzer.ts
@@ -1,24 +1,41 @@
 import type { SmartArchive } from './classes.smartarchive.js';
 import type { TSupportedMime } from './interfaces.js';
 import * as plugins from './plugins.js';
-export interface IAnalyzedResult {
+/**
-  fileType: plugins.fileType.FileTypeResult;
+ * Type for decompression streams
-  isArchive: boolean;
+ */
-  resultStream: plugins.smartstream.SmartDuplex;
+export type TDecompressionStream =
  decompressionStream:
  | plugins.stream.Transform
  | plugins.stream.Duplex
  | plugins.tarStream.Extract;
 /**
 * Result of archive analysis
 */
 export interface IAnalyzedResult {
  fileType: plugins.fileType.FileTypeResult | undefined;
  isArchive: boolean;
  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',
@@ -26,50 +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'],
+   * Get the appropriate decompression stream for a MIME type
-  ): Promise<
+   */
-    plugins.stream.Transform | plugins.stream.Duplex | plugins.tarStream.Extract
+  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,
+    const analyzerstream = new plugins.smartstream.SmartDuplex<Buffer, IAnalyzedResult>({
      IAnalyzedResult
    >({
      readableObjectMode: true,
      writeFunction: async (chunkArg: Buffer, streamtools) => {
        if (firstRun) {
          firstRun = false;
          const fileType = await plugins.fileType.fileTypeFromBuffer(chunkArg);
-          const decompressionStream = await this.getDecompressionStream(
+          const decompressionStream = await this.getDecompressionStream(fileType?.mime as TSupportedMime);
-            fileType?.mime as any,
+
          );
          /**
           * analyzed stream emits once with this object
           */
          const result: IAnalyzedResult = {
            fileType,
            isArchive: await this.mimeTypeIsArchive(fileType?.mime),
@@ -81,11 +94,12 @@ export class ArchiveAnalyzer {
        await resultStream.backpressuredPush(chunkArg);
        return null;
      },
-      finalFunction: async (tools) => {
+      finalFunction: async () => {
        resultStream.push(null);
        return null;
      },
    });
    return analyzerstream;
  }
 }
--- a/ts/classes.gziptools.ts
+++ b/ts/classes.gziptools.ts
@@ -1,42 +1,19 @@
 import type { SmartArchive } from './classes.smartarchive.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 {
+ * Transform stream for GZIP compression using fflate
-  constructor() {
+ */
-    super();
+export class GzipCompressionTransform extends plugins.stream.Transform {
-  }
+  private gzip: plugins.fflate.Gzip;
-  _transform(
+  constructor(level: TCompressionLevel = 6) {
    chunk: Buffer,
    encoding: BufferEncoding,
    callback: plugins.stream.TransformCallback,
  ) {
    plugins.fflate.gunzip(chunk, (err, decompressed) => {
      if (err) {
        callback(err);
      } else {
        this.push(decompressed);
        callback();
      }
    });
  }
 }
 // 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 {
  private gunzip: any; // fflate.Gunzip instance
  constructor() {
    super();
-    // Create a streaming Gunzip decompressor
+    // Create a streaming Gzip compressor
-    this.gunzip = new plugins.fflate.Gunzip((chunk, final) => {
+    this.gzip = new plugins.fflate.Gzip({ level }, (chunk, final) => {
      // Push decompressed chunks to the output stream
      this.push(Buffer.from(chunk));
      if (final) {
        // Signal end of stream when decompression is complete
        this.push(null);
      }
    });
@@ -45,10 +22,50 @@ export class DecompressGunzipTransform extends plugins.stream.Transform {
  _transform(
    chunk: Buffer,
    encoding: BufferEncoding,
-    callback: plugins.stream.TransformCallback,
+    callback: plugins.stream.TransformCallback
-  ) {
+  ): void {
    try {
      this.gzip.push(chunk, false);
      callback();
    } catch (err) {
      callback(err as Error);
    }
  }
  _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 {
      // Feed chunks to the gunzip stream
      this.gunzip.push(chunk, false);
      callback();
    } catch (err) {
@@ -56,9 +73,8 @@ export class DecompressGunzipTransform extends plugins.stream.Transform {
    }
  }
-  _flush(callback: plugins.stream.TransformCallback) {
+  _flush(callback: plugins.stream.TransformCallback): void {
    try {
      // Signal end of input to gunzip
      this.gunzip.push(new Uint8Array(0), true);
      callback();
    } catch (err) {
@@ -67,14 +83,56 @@ export class DecompressGunzipTransform extends plugins.stream.Transform {
  }
 }
 /**
 * GZIP compression and decompression utilities
 */
 export class GzipTools {
-  constructor() {}
+  /**
-
+   * Get a streaming compression transform
-  public getCompressionStream() {
+   */
-    return new CompressGunzipTransform();
+  public getCompressionStream(level?: TCompressionLevel): plugins.stream.Transform {
    return new GzipCompressionTransform(level);
  }
-  public getDecompressionStream() {
+  /**
-    return new DecompressGunzipTransform();
+   * Get a streaming decompression transform
   */
  public getDecompressionStream(): plugins.stream.Transform {
    return new GzipDecompressionTransform();
  }
  /**
   * Compress data synchronously
   */
  public compressSync(data: Buffer, level?: TCompressionLevel): Buffer {
    const options = level !== undefined ? { level } : undefined;
    return Buffer.from(plugins.fflate.gzipSync(data, options));
  }
  /**
   * Decompress data synchronously
   */
  public decompressSync(data: Buffer): Buffer {
    return Buffer.from(plugins.fflate.gunzipSync(data));
  }
  /**
   * Compress data asynchronously
   * Note: Uses sync version for Deno compatibility (fflate async uses Web Workers
   * which have issues in Deno)
   */
  public async compress(data: Buffer, level?: TCompressionLevel): Promise<Buffer> {
    // Use sync version wrapped in Promise for cross-runtime compatibility
    return this.compressSync(data, level);
  }
  /**
   * Decompress data asynchronously
   * Note: Uses sync version for Deno compatibility (fflate async uses Web Workers
   * which have issues in Deno)
   */
  public async decompress(data: Buffer): Promise<Buffer> {
    // Use sync version wrapped in Promise for cross-runtime compatibility
    return this.decompressSync(data);
  }
 }
--- a/ts/classes.smartarchive.ts
+++ b/ts/classes.smartarchive.ts
--- a/ts/classes.tartools.ts
+++ b/ts/classes.tartools.ts
@@ -1,11 +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
+  /**
-  constructor() {}
+   * Add a file to a TAR pack stream
-
+   */
  // packing
  public async addFileToPack(
    pack: plugins.tarStream.Pack,
    optionsArg: {
@@ -13,12 +16,12 @@ export class TarTools {
      content?:
        | string
        | Buffer
-        | plugins.smartstream.stream.Readable
+        | plugins.stream.Readable
        | plugins.smartfile.SmartFile
        | plugins.smartfile.StreamFile;
      byteLength?: number;
      filePath?: string;
-    },
+    }
  ): Promise<void> {
    return new Promise<void>(async (resolve, reject) => {
      let fileName: string | null = null;
@@ -26,18 +29,20 @@ export class TarTools {
      if (optionsArg.fileName) {
        fileName = optionsArg.fileName;
      } else if (optionsArg.content instanceof plugins.smartfile.SmartFile) {
-        fileName = (optionsArg.content as plugins.smartfile.SmartFile).relative;
+        fileName = optionsArg.content.relative;
      } else if (optionsArg.content instanceof plugins.smartfile.StreamFile) {
-        fileName = (optionsArg.content as plugins.smartfile.StreamFile)
+        fileName = optionsArg.content.relativeFilePath;
          .relativeFilePath;
      } else if (optionsArg.filePath) {
        fileName = optionsArg.filePath;
      }
-      /**
+      if (!fileName) {
-       * contentByteLength is used to set the size of the entry in the tar file
+        reject(new Error('No filename specified for TAR entry'));
-       */
+        return;
-      let contentByteLength: number;
+      }
      // Determine content byte length
      let contentByteLength: number | undefined;
      if (optionsArg.byteLength) {
        contentByteLength = optionsArg.byteLength;
      } else if (typeof optionsArg.content === 'string') {
@@ -45,72 +50,59 @@ 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
+        contentByteLength = await optionsArg.content.getSize();
      } else if (
        optionsArg.content instanceof plugins.smartstream.stream.Readable
      ) {
        console.warn(
          '@push.rocks/smartarchive: When streaming, it is recommended to provide byteLength, if known.',
        );
      } else if (optionsArg.filePath) {
        const fileStat = await plugins.fsPromises.stat(optionsArg.filePath);
        contentByteLength = fileStat.size;
      }
-      /**
+      // Convert all content types to Readable stream
-       * here we try to harmonize all kind of entries towards a readable stream
+      let content: plugins.stream.Readable;
       */
      let content: plugins.smartstream.stream.Readable;
      if (Buffer.isBuffer(optionsArg.content)) {
-        content = plugins.smartstream.stream.Readable.from(optionsArg.content);
+        content = plugins.stream.Readable.from(optionsArg.content);
      } else if (typeof optionsArg.content === 'string') {
-        content = plugins.smartstream.stream.Readable.from(
+        content = plugins.stream.Readable.from(Buffer.from(optionsArg.content));
          Buffer.from(optionsArg.content),
        );
      } else if (optionsArg.content instanceof plugins.smartfile.SmartFile) {
-        content = plugins.smartstream.stream.Readable.from(
+        content = plugins.stream.Readable.from(optionsArg.content.contents);
          optionsArg.content.contents,
        );
      } else if (optionsArg.content instanceof plugins.smartfile.StreamFile) {
        content = await optionsArg.content.createReadStream();
-      } else if (
+      } else if (optionsArg.content instanceof plugins.stream.Readable) {
        optionsArg.content instanceof plugins.smartstream.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
+          ...(contentByteLength !== undefined ? { size: contentByteLength } : {}),
            ? {
                size: contentByteLength,
              }
            : null),
        },
-        (err: Error) => {
+        (err: Error | null) => {
          if (err) {
            reject(err);
          } else {
            resolve();
          }
-        },
+        }
      );
      content.pipe(entry);
-      resolve();
+      // Note: resolve() is called in the callback above when pipe completes
    });
  }
  /**
-   * packs a directory from disk into a tar stream
+   * Pack a directory into a TAR stream
   * @param directoryPath
   */
-  public async packDirectory(directoryPath: string) {
+  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.fsPromises.stat(absolutePath);
@@ -121,16 +113,96 @@ export class TarTools {
        content: plugins.fs.createReadStream(absolutePath),
      });
    }
    return pack;
  }
-  public async getPackStream() {
+  /**
-    const pack = plugins.tarStream.pack();
+   * Get a new TAR pack stream
-    return pack;
+   */
  public async getPackStream(): Promise<plugins.tarStream.Pack> {
    return plugins.tarStream.pack();
  }
-  // extracting
+  /**
-  getDecompressionStream() {
+   * Get a TAR extraction stream
   */
  public getDecompressionStream(): plugins.tarStream.Extract {
    return plugins.tarStream.extract();
  }
  /**
   * Pack files into a TAR buffer
   */
  public async packFiles(files: IArchiveEntry[]): Promise<Buffer> {
    const pack = await this.getPackStream();
    for (const file of files) {
      await this.addFileToPack(pack, {
        fileName: file.archivePath,
        content: file.content as string | Buffer | plugins.stream.Readable | plugins.smartfile.SmartFile | plugins.smartfile.StreamFile,
        byteLength: file.size,
      });
    }
    pack.finalize();
    const chunks: Buffer[] = [];
    return new Promise((resolve, reject) => {
      pack.on('data', (chunk: Buffer) => chunks.push(chunk));
      pack.on('end', () => resolve(Buffer.concat(chunks)));
      pack.on('error', reject);
    });
  }
  /**
   * Pack a directory into a TAR.GZ buffer
   */
  public async packDirectoryToTarGz(
    directoryPath: string,
    compressionLevel?: TCompressionLevel
  ): Promise<Buffer> {
    const pack = await this.packDirectory(directoryPath);
    pack.finalize();
    const gzipTools = new GzipTools();
    const gzipStream = gzipTools.getCompressionStream(compressionLevel);
    const chunks: Buffer[] = [];
    return new Promise((resolve, reject) => {
      pack
        .pipe(gzipStream)
        .on('data', (chunk: Buffer) => chunks.push(chunk))
        .on('end', () => resolve(Buffer.concat(chunks)))
        .on('error', reject);
    });
  }
  /**
   * Pack a directory into a TAR.GZ stream
   */
  public async packDirectoryToTarGzStream(
    directoryPath: string,
    compressionLevel?: TCompressionLevel
  ): Promise<plugins.stream.Readable> {
    const pack = await this.packDirectory(directoryPath);
    pack.finalize();
    const gzipTools = new GzipTools();
    const gzipStream = gzipTools.getCompressionStream(compressionLevel);
    return pack.pipe(gzipStream);
  }
  /**
   * Pack files into a TAR.GZ buffer
   */
  public async packFilesToTarGz(
    files: IArchiveEntry[],
    compressionLevel?: TCompressionLevel
  ): Promise<Buffer> {
    const tarBuffer = await this.packFiles(files);
    const gzipTools = new GzipTools();
    return gzipTools.compress(tarBuffer, compressionLevel);
  }
 }
--- a/ts/classes.ziptools.ts
+++ b/ts/classes.ziptools.ts
@@ -1,83 +1,196 @@
 import type { SmartArchive } from './classes.smartarchive.js';
 import * as plugins from './plugins.js';
 import type { IArchiveEntry, TCompressionLevel } from './interfaces.js';
-class DecompressZipTransform extends plugins.smartstream
+/**
-  .SmartDuplex<ArrayBufferLike> {
+ * Transform stream for ZIP decompression using fflate
-  private streamtools: plugins.smartstream.IStreamTools;
+ * 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) => {
+    fileArg.ondata = async (_flateError, dat, final) => {
      resultBuffer
        ? (resultBuffer = Buffer.concat([resultBuffer, Buffer.from(dat)]))
        : (resultBuffer = Buffer.from(dat));
      if (final) {
-        const streamFile =
+        const streamFile = plugins.smartfile.StreamFile.fromBuffer(resultBuffer);
          plugins.smartfile.StreamFile.fromBuffer(resultBuffer);
        streamFile.relativeFilePath = fileArg.name;
        this.streamtools.push(streamFile);
      }
    };
    fileArg.start();
  });
  constructor() {
    super({
      objectMode: true,
      writeFunction: async (chunkArg, streamtoolsArg) => {
        this.streamtools ? null : (this.streamtools = streamtoolsArg);
        this.unzipper.push(
-          Buffer.isBuffer(chunkArg) ? chunkArg : Buffer.from(chunkArg),
+          Buffer.isBuffer(chunkArg) ? chunkArg : Buffer.from(chunkArg as unknown as ArrayBuffer),
-          false,
+          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 {
+ * Streaming ZIP compression using fflate
-  files: { [fileName: string]: Uint8Array };
+ * 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,
+   * Add a file entry to the ZIP archive
-    encoding: BufferEncoding,
+   */
-    callback: plugins.stream.TransformCallback,
+  public async addEntry(
-  ) {
+    fileName: string,
-    // Simple example: storing chunks in memory before finalizing ZIP in _flush
+    content: Buffer | plugins.stream.Readable,
-    this.files['file.txt'] = new Uint8Array(chunk);
+    options?: { compressionLevel?: TCompressionLevel }
-    callback();
+  ): Promise<void> {
    if (this.finalized) {
      throw new Error('Cannot add entries to a finalized ZIP archive');
    }
-  _flush(callback: plugins.stream.TransformCallback) {
+    let data: Buffer;
-    plugins.fflate.zip(this.files, (err, zipped) => {
+    if (Buffer.isBuffer(content)) {
-      if (err) {
+      data = content;
        callback(err);
    } else {
-        this.push(Buffer.from(zipped));
+      // Collect stream to buffer
-        callback();
+      const chunks: Buffer[] = [];
      for await (const chunk of content) {
        chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk));
      }
      data = Buffer.concat(chunks);
    }
    this.files.set(fileName, {
      data: new Uint8Array(data),
      options: options?.compressionLevel !== undefined ? { level: options.compressionLevel } : undefined,
    });
  }
  /**
   * Finalize the ZIP archive and emit the compressed data
   */
  public async finalize(): Promise<void> {
    if (this.finalized) {
      return;
    }
    this.finalized = true;
    const filesObj: plugins.fflate.Zippable = {};
    for (const [name, { data, options }] of this.files) {
      filesObj[name] = options ? [data, options] : data;
    }
    // Use sync version for Deno compatibility (fflate async uses Web Workers)
    try {
      const result = plugins.fflate.zipSync(filesObj);
      this.push(Buffer.from(result));
      this.push(null);
    } catch (err) {
      throw err;
    }
  }
  _read(): void {
    // No-op: data is pushed when finalize() is called
  }
  _write(
    _chunk: Buffer,
    _encoding: BufferEncoding,
    callback: (error?: Error | null) => void
  ): void {
    // Not used for ZIP creation - use addEntry() instead
    callback(new Error('Use addEntry() to add files to the ZIP archive'));
  }
 }
 /**
 * ZIP compression and decompression utilities
 */
 export class ZipTools {
-  constructor() {}
+  /**
-
+   * Get a streaming compression object for creating ZIP archives
-  public getCompressionStream() {
+   */
-    return new CompressZipTransform();
+  public getCompressionStream(): ZipCompressionStream {
    return new ZipCompressionStream();
  }
-  public getDecompressionStream() {
+  /**
-    return new DecompressZipTransform();
+   * 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;
      }
    }
    // Use sync version for Deno compatibility (fflate async uses Web Workers)
    const result = plugins.fflate.zipSync(filesObj);
    return Buffer.from(result);
  }
  /**
   * Extract a ZIP buffer to an array of entries
   */
  public async extractZip(data: Buffer): Promise<Array<{ path: string; content: Buffer }>> {
    // Use sync version for Deno compatibility (fflate async uses Web Workers)
    const result = plugins.fflate.unzipSync(data);
    const entries: Array<{ path: string; content: Buffer }> = [];
    for (const [path, content] of Object.entries(result)) {
      entries.push({ path, content: Buffer.from(content) });
    }
    return entries;
  }
 }
--- a/ts/errors.ts
+++ b/ts/errors.ts
@@ -0,0 +1,70 @@
 /**
 * Base error class for smartarchive
 */
 export class SmartArchiveError extends Error {
  public readonly code: string;
  constructor(message: string, code: string) {
    super(message);
    this.name = 'SmartArchiveError';
    this.code = code;
    // Maintains proper stack trace for where error was thrown (V8)
    if (Error.captureStackTrace) {
      Error.captureStackTrace(this, this.constructor);
    }
  }
 }
 /**
 * BZIP2-specific decompression errors
 */
 export class Bzip2Error extends SmartArchiveError {
  constructor(message: string, code: string = 'BZIP2_ERROR') {
    super(message, code);
    this.name = 'Bzip2Error';
  }
 }
 /**
 * Archive format detection errors
 */
 export class ArchiveFormatError extends SmartArchiveError {
  constructor(message: string) {
    super(message, 'ARCHIVE_FORMAT_ERROR');
    this.name = 'ArchiveFormatError';
  }
 }
 /**
 * Stream processing errors
 */
 export class StreamError extends SmartArchiveError {
  constructor(message: string) {
    super(message, 'STREAM_ERROR');
    this.name = 'StreamError';
  }
 }
 /**
 * BZIP2 error codes for programmatic error handling
 */
 export const BZIP2_ERROR_CODES = {
  NO_MAGIC_NUMBER: 'BZIP2_NO_MAGIC',
  INVALID_ARCHIVE: 'BZIP2_INVALID_ARCHIVE',
  CRC_MISMATCH: 'BZIP2_CRC_MISMATCH',
  INVALID_BLOCK_DATA: 'BZIP2_INVALID_BLOCK',
  BUFFER_OVERFLOW: 'BZIP2_BUFFER_OVERFLOW',
  INVALID_HUFFMAN: 'BZIP2_INVALID_HUFFMAN',
  INVALID_SELECTOR: 'BZIP2_INVALID_SELECTOR',
  INVALID_POSITION: 'BZIP2_INVALID_POSITION',
  PREMATURE_END: 'BZIP2_PREMATURE_END',
 } as const;
 export type TBzip2ErrorCode = typeof BZIP2_ERROR_CODES[keyof typeof BZIP2_ERROR_CODES];
 /**
 * Throw a BZIP2 error with a specific code
 */
 export function throwBzip2Error(message: string, code: TBzip2ErrorCode): never {
  throw new Bzip2Error(message, code);
 }
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1,4 +1,15 @@
 // Core types and errors
 export * from './interfaces.js';
 export * from './errors.js';
 // Main archive class
 export * from './classes.smartarchive.js';
 // Format-specific tools
 export * from './classes.tartools.js';
 export * from './classes.ziptools.js';
 export * from './classes.gziptools.js';
 export * from './classes.bzip2tools.js';
 // Archive analysis
 export * from './classes.archiveanalyzer.js';
--- a/ts/interfaces.ts
+++ b/ts/interfaces.ts
@@ -0,0 +1,136 @@
 import type * as stream from 'node:stream';
 import type { SmartFile, StreamFile } from '@push.rocks/smartfile';
 /**
 * Supported archive formats
 */
 export type TArchiveFormat = 'tar' | 'tar.gz' | 'tgz' | 'zip' | 'gz' | 'bz2';
 /**
 * Compression level (0 = no compression, 9 = maximum compression)
 */
 export type TCompressionLevel = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
 /**
 * Supported MIME types for archive detection
 */
 export type TSupportedMime =
  | 'application/gzip'
  | 'application/zip'
  | 'application/x-bzip2'
  | 'application/x-tar'
  | undefined;
 /**
 * Entry to add to an archive during creation
 */
 export interface IArchiveEntry {
  /** Path within the archive */
  archivePath: string;
  /** Content: string, Buffer, Readable stream, SmartFile, or StreamFile */
  content: string | Buffer | stream.Readable | SmartFile | StreamFile;
  /** Optional size hint for streams (improves performance) */
  size?: number;
  /** Optional file mode/permissions */
  mode?: number;
  /** Optional modification time */
  mtime?: Date;
 }
 /**
 * Options for creating archives
 */
 export interface IArchiveCreationOptions {
  /** Target archive format */
  format: TArchiveFormat;
  /** Compression level (0-9, default depends on format) */
  compressionLevel?: TCompressionLevel;
  /** Base path to strip from file paths in archive */
  basePath?: string;
 }
 /**
 * Options for extracting archives
 */
 export interface IArchiveExtractionOptions {
  /** Target directory for extraction */
  targetDir: string;
  /** Optional filename for single-file archives (gz, bz2) */
  fileName?: string;
  /** Number of leading path components to strip */
  stripComponents?: number;
  /** Filter function to select which entries to extract */
  filter?: (entry: IArchiveEntryInfo) => boolean;
  /** Whether to overwrite existing files */
  overwrite?: boolean;
 }
 /**
 * Information about an archive entry
 */
 export interface IArchiveEntryInfo {
  /** Path of the entry within the archive */
  path: string;
  /** Size in bytes */
  size: number;
  /** Whether this entry is a directory */
  isDirectory: boolean;
  /** Whether this entry is a file */
  isFile: boolean;
  /** Modification time */
  mtime?: Date;
  /** File mode/permissions */
  mode?: number;
 }
 /**
 * Result of archive analysis
 */
 export interface IArchiveInfo {
  /** Detected archive format */
  format: TArchiveFormat | null;
  /** Whether the archive is compressed */
  isCompressed: boolean;
  /** Whether this is a recognized archive format */
  isArchive: boolean;
  /** List of entries (if available without full extraction) */
  entries?: IArchiveEntryInfo[];
 }
 /**
 * Options for adding a file to a TAR pack stream
 */
 export interface IAddFileOptions {
  /** Filename within the archive */
  fileName?: string;
  /** File content */
  content?: string | Buffer | stream.Readable | SmartFile | StreamFile;
  /** Size in bytes (required for streams) */
  byteLength?: number;
  /** Path to file on disk (alternative to content) */
  filePath?: string;
 }
 /**
 * Bit reader interface for BZIP2 decompression
 */
 export interface IBitReader {
  (n: number | null): number | void;
  bytesRead: number;
 }
 /**
 * Huffman group for BZIP2 decompression
 */
 export interface IHuffmanGroup {
  permute: Int32Array;
  limit: Int32Array;
  base: Int32Array;
  minLen: number;
  maxLen: number;
 }
 /**
 * Entry filter predicate for fluent API
 */
 export type TEntryFilter = (entry: IArchiveEntryInfo) => boolean;
Author	SHA1	Message	Date
Juergen Kunz	4e3c5a8443	v5.0.1	2025-11-25 13:37:27 +00:00
Juergen Kunz	11bbddc763	fix(ziptools,gziptools): Use fflate synchronous APIs for ZIP and GZIP operations for Deno compatibility; add TEntryFilter type and small docs/tests cleanup	2025-11-25 13:37:27 +00:00
Juergen Kunz	5cc030d433	v5.0.0	2025-11-25 12:32:13 +00:00
Juergen Kunz	2b91c1586c	BREAKING CHANGE(SmartArchive): Refactor public API: rename factory/extraction methods, introduce typed interfaces and improved compression tools	2025-11-25 12:32:13 +00:00