v6.1.0

changelog.md

@@ -1,5 +1,75 @@
 # Changelog
 
+## 2025-12-08 - 6.1.0 - feat(watcher.node)
+Add automatic restart, periodic health checks, and safe event emission to Node watcher; improve logging and stat handling
+
+- NodeWatcher: introduced safeEmit() to isolate subscriber errors and prevent watcher crashes
+- Auto-restart on failure with exponential backoff (1s → 30s) and up to 3 retry attempts per watched base path
+- Periodic health checks (every 30s) to detect missing watched paths and trigger automatic restarts
+- Handle unexpected FSWatcher 'close' events and restart watchers when they close silently
+- Verbose lifecycle logging with `[smartwatch]` prefix for start/stop/health/restart events
+- Clear restart tracking and stop health checks on watcher.stop() to ensure clean shutdown
+- Improved statSafe() to normalize followSymlinks logic and log non-ENO errors as warnings
+- Updated readme.hints.md documenting the new robustness features (v6.1.0+)
+
+## 2025-12-08 - 6.0.0 - BREAKING CHANGE(watchers)
+Replace polling-based write stabilization with debounce-based event coalescing and simplify watcher options
+
+- Remove polling-based WriteStabilizer (ts/utils/write-stabilizer.ts) and related waitForWriteFinish logic
+- Introduce debounce-based coalescing (debounceMs) for Node and Deno watchers (ts/watchers/watcher.node.ts, ts/watchers/watcher.deno.ts)
+- Change IWatcherOptions: remove stabilityThreshold/pollInterval/maxWaitTime and add debounceMs
+- Default watcher options updated to use debounceMs = 100
+- Node/Deno watchers now skip editor temp files earlier, debounce duplicate events, and emit events directly (no size polling)
+- Updated default watcher creation in Smartwatch to pass debounceMs
+- Update package.json build script to run 'tsbuild tsfolders'
+
+## 2025-12-08 - 5.1.0 - feat(watchers)
+Improve write stabilization and ignore temporary editor files
+
+- Add maxWaitTime option (ms) to IWatcherOptions and WriteStabilizer to cap how long stabilization will wait (default: 1000ms).
+- WriteStabilizer: reduce default stabilityThreshold from 300ms to 100ms and track write start time to enforce maxWaitTime and avoid indefinite polling.
+- Node and Deno watchers: detect and ignore common temporary/editor files (e.g. *.tmp.*, *.swp, *.swx, trailing ~, .#*) to prevent spurious events from atomic saves.
+- Node watcher: treat rename (atomic-save) events as already-complete files and emit add/change immediately without stabilization.
+- Deno watcher: use the configured maxWaitTime and polling-based stabilization for modify events to ensure consistent behavior across runtimes.
+
+## 2025-11-30 - 5.0.0 - BREAKING CHANGE(@push.rocks/smartwatch)
+Rename package and update branding/docs: switch from @push.rocks/smartchok to @push.rocks/smartwatch, update repository/homepage/bugs URLs and author, and refresh README examples and install instructions.
+
+- Package name changed from @push.rocks/smartchok to @push.rocks/smartwatch in package.json
+- Repository, homepage and issue URLs updated to point to the new smartwatch repository
+- Author changed to Task Venture Capital GmbH in package metadata
+- README updated: install commands, import examples and references now use @push.rocks/smartwatch
+- Documentation text and branding updated throughout README (project name, internal references)
+
+## 2025-11-30 - 4.0.1 - fix(readme)
+Update README: refine description and clarify trademark/legal information
+
+- Refined project description and tagline for clarity and brevity (adds lightweight wording and an emoji).
+- Updated Trademark section to explicitly mention third-party trademarks, add guidance about usage and approval, and clarify that trademarks are not covered by the MIT license.
+- Minor legal/company wording and formatting fixes (e.g. 'District Court' capitalization and contact sentence tweaks).
+- General README wording and formatting improvements for clearer instructions and feature descriptions.
+
+## 2025-11-30 - 4.0.0 - BREAKING CHANGE(watchers)
+Replace chokidar with native platform watchers and add cross-runtime support (Node.js, Deno, Bun); introduce write stabilization and internal glob matching
+
+- Replaced chokidar-based implementation with native file watching APIs (Node.js fs.watch, Deno.watchFs).
+- Added platform-specific watchers: NodeWatcher and DenoWatcher (Bun uses Node compatibility).
+- Implemented polling-based write stabilization (awaitWriteFinish replacement) to avoid duplicate events during writes.
+- Keep glob pattern support by matching events internally using picomatch; base-path extraction used to limit watch scope.
+- API/runtime requirement increased: Node.js >= 20.0.0 is required for native recursive fs.watch.
+- Package/documentation name and examples updated to @push.rocks/smartchok and export the Smartwatch class.
+
+## 2025-11-30 - 3.0.0 - BREAKING CHANGE(smartwatch)
+Introduce Smartwatch: cross-runtime native file watching for Node.js, Deno and Bun; rename smartchok to smartwatch and bump major version to 2.0.0
+
+- Rename public API and docs from Smartchok to Smartwatch and update package metadata for the new module name.
+- Replace chokidar with native watchers and picomatch-based glob filtering to enable cross-runtime support (Node.js, Deno, Bun).
+- Add watcher factory and runtime-specific implementations: watchers/index.ts, watcher.node.ts, watcher.deno.ts.
+- Add WriteStabilizer (ts/utils/write-stabilizer.ts) to provide awaitWriteFinish functionality via polling.
+- Introduce @push.rocks/smartenv for runtime detection and remove direct chokidar dependency; update dependencies accordingly.
+- Update tests (test/test.ts) and documentation (readme.md, readme.hints.md) to reflect API/name changes and new architecture.
+- Bump package version to 2.0.0 to mark breaking changes in API and behavior.
+
 ## 2025-11-29 - 1.2.0 - feat(core)
 Migrate to chokidar 5.x, add picomatch filtering and update test/dev dependencies
 

npmextra.json

@@ -8,9 +8,9 @@
     "module": {
       "githost": "code.foss.global",
       "gitscope": "push.rocks",
-      "gitrepo": "smartchok",
+      "gitrepo": "smartwatch",
-      "description": "A smart wrapper for chokidar to facilitate file watching with enhanced features.",
+      "description": "A smart wrapper for chokidar 5.x with glob pattern support and enhanced file watching features.",
-      "npmPackagename": "@push.rocks/smartchokidar",
+      "npmPackagename": "@push.rocks/smartwatch",
       "license": "MIT",
       "keywords": [
         "file watching",

package.json

@@ -1,31 +1,34 @@
 {
-  "name": "@push.rocks/smartchok",
+  "name": "@push.rocks/smartwatch",
-  "version": "1.2.0",
+  "version": "6.1.0",
   "private": false,
-  "description": "A smart wrapper for chokidar 5.x with glob pattern support and enhanced features.",
+  "description": "A cross-runtime file watcher with glob pattern support for Node.js, Deno, and Bun.",
   "main": "dist_ts/index.js",
   "typings": "dist_ts/index.d.ts",
   "scripts": {
     "test": "(npm run prepareTest && tstest test/)",
     "prepareTest": "(rm -f ./test/assets/hi.txt)",
-    "build": "tsbuild",
+    "build": "tsbuild tsfolders",
     "buildDocs": "tsdoc"
   },
   "repository": {
     "type": "git",
-    "url": "https://code.foss.global/push.rocks/smartchok.git"
+    "url": "https://code.foss.global/push.rocks/smartwatch.git"
   },
-  "author": "Lossless GmbH",
+  "author": "Task Venture Capital GmbH",
   "license": "MIT",
   "bugs": {
-    "url": "https://gitlab.com/push.rocks/smartchok/issues"
+    "url": "https://gitlab.com/push.rocks/smartwatch/issues"
+  },
+  "homepage": "https://code.foss.global/push.rocks/smartwatch",
+  "engines": {
+    "node": ">=20.0.0"
   },
-  "homepage": "https://code.foss.global/push.rocks/smartchok",
   "dependencies": {
     "@push.rocks/lik": "^6.2.2",
+    "@push.rocks/smartenv": "^6.0.0",
     "@push.rocks/smartpromise": "^4.2.3",
     "@push.rocks/smartrx": "^3.0.10",
-    "chokidar": "^5.0.0",
     "picomatch": "^4.0.3"
   },
   "devDependencies": {
@@ -53,15 +56,18 @@
   "type": "module",
   "keywords": [
     "file watching",
-    "chokidar",
     "filesystem",
     "observable",
     "typescript",
     "node.js",
+    "deno",
+    "bun",
+    "cross-runtime",
     "development tool",
     "file system events",
     "real-time",
-    "watch files"
+    "watch files",
+    "glob patterns"
   ],
   "packageManager": "pnpm@10.11.0+sha512.6540583f41cc5f628eb3d9773ecee802f4f9ef9923cc45b69890fb47991d4b092964694ec3a4f738a420c918a333062c8b925d312f42e4f0c263eb603551f977"
 }

pnpm-lock.yaml

@@ -11,15 +11,15 @@ importers:
       '@push.rocks/lik':
         specifier: ^6.2.2
         version: 6.2.2
+      '@push.rocks/smartenv':
+        specifier: ^6.0.0
+        version: 6.0.0
       '@push.rocks/smartpromise':
         specifier: ^4.2.3
         version: 4.2.3
       '@push.rocks/smartrx':
         specifier: ^3.0.10
         version: 3.0.10
-      chokidar:
-        specifier: ^5.0.0
-        version: 5.0.0
       picomatch:
         specifier: ^4.0.3
         version: 4.0.3
@@ -898,9 +898,6 @@ packages:
   '@push.rocks/smartdns@7.6.1':
     resolution: {integrity: sha512-nnP5+A2GOt0WsHrYhtKERmjdEHUchc+QbCCBEqlyeQTn+mNfx2WZvKVI1DFRJt8lamvzxP6Hr/BSe3WHdh4Snw==}
 
-  '@push.rocks/smartenv@5.0.12':
-    resolution: {integrity: sha512-tDEFwywzq0FNzRYc9qY2dRl2pgQuZG0G2/yml2RLWZWSW+Fn1EHshnKOGHz8o77W7zvu4hTgQQX42r/JY5XHTg==}
-
   '@push.rocks/smartenv@5.0.13':
     resolution: {integrity: sha512-ACXmUcHZHl2CF2jnVuRw9saRRrZvJblCRs2d+K5aLR1DfkYFX3eA21kcMlKeLisI3aGNbIj9vz/rowN5qkRkfA==}
 
@@ -2202,10 +2199,6 @@ packages:
     resolution: {integrity: sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==}
     engines: {node: '>= 14.16.0'}
 
-  chokidar@5.0.0:
-    resolution: {integrity: sha512-TQMmc3w+5AxjpL8iIiwebF73dRDF4fBIieAqGn9RGCWaEVwQ6Fb2cGe31Yns0RRIzii5goJ1Y7xbMwo1TxMplw==}
-    engines: {node: '>= 20.19.0'}
-
   chromium-bidi@5.1.0:
     resolution: {integrity: sha512-9MSRhWRVoRPDG0TgzkHrshFSJJNZzfY5UFqUMuksg7zL1yoZIZ3jLB0YAgHclbiAxPI86pBnwDX1tbzoiV8aFw==}
     peerDependencies:
@@ -3638,10 +3631,6 @@ packages:
     resolution: {integrity: sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==}
     engines: {node: '>= 14.18.0'}
 
-  readdirp@5.0.0:
-    resolution: {integrity: sha512-9u/XQ1pvrQtYyMpZe7DXKv2p5CNvyVwzUB6uhLAnQwHMSgKMBR62lc7AHljaeteeHXn11XTAaLLUVZYVZyuRBQ==}
-    engines: {node: '>= 20.19.0'}
-
   reflect-metadata@0.2.2:
     resolution: {integrity: sha512-urBwgfrvVP/eAyXx4hluJivBKzuEbSQs9rKWCrCkbSxNv8mxPcUZKeuoF3Uy4mJl3Lwprp6yy5/39VWigZ4K6Q==}
 
@@ -5784,7 +5773,7 @@ snapshots:
       '@push.rocks/lik': 6.2.2
       '@push.rocks/smartbucket': 3.3.7
       '@push.rocks/smartcache': 1.0.16
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
       '@push.rocks/smartexit': 1.0.23
       '@push.rocks/smartfile': 11.2.7
       '@push.rocks/smartjson': 5.0.20
@@ -5977,10 +5966,6 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@push.rocks/smartenv@5.0.12':
-    dependencies:
-      '@push.rocks/smartpromise': 4.2.3
-
   '@push.rocks/smartenv@5.0.13':
     dependencies:
       '@push.rocks/smartpromise': 4.2.3
@@ -6074,7 +6059,7 @@ snapshots:
 
   '@push.rocks/smarthash@3.2.0':
     dependencies:
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
       '@push.rocks/smartjson': 5.0.20
       '@push.rocks/smartpromise': 4.2.3
       '@types/through2': 2.0.41
@@ -6090,7 +6075,7 @@ snapshots:
 
   '@push.rocks/smartjson@5.0.20':
     dependencies:
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
       '@push.rocks/smartstring': 4.0.15
       fast-json-stable-stringify: 2.1.0
       lodash.clonedeep: 4.5.0
@@ -6398,14 +6383,14 @@ snapshots:
   '@push.rocks/smartstream@3.2.5':
     dependencies:
       '@push.rocks/lik': 6.2.2
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
       '@push.rocks/smartpromise': 4.2.3
       '@push.rocks/smartrx': 3.0.10
 
   '@push.rocks/smartstring@4.0.15':
     dependencies:
       '@push.rocks/isounique': 1.0.5
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
       '@types/randomatic': 3.1.5
       crypto-random-string: 5.0.0
       js-base64: 3.7.7
@@ -6483,7 +6468,7 @@ snapshots:
   '@push.rocks/webrequest@3.0.37':
     dependencies:
       '@push.rocks/smartdelay': 3.0.5
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
       '@push.rocks/smartjson': 5.0.20
       '@push.rocks/smartpromise': 4.2.3
       '@push.rocks/webstore': 2.0.20
@@ -6515,7 +6500,7 @@ snapshots:
 
   '@push.rocks/webstream@1.0.10':
     dependencies:
-      '@push.rocks/smartenv': 5.0.12
+      '@push.rocks/smartenv': 5.0.13
 
   '@pushrocks/isounique@1.0.5': {}
 
@@ -7915,10 +7900,6 @@ snapshots:
     dependencies:
       readdirp: 4.1.2
 
-  chokidar@5.0.0:
-    dependencies:
-      readdirp: 5.0.0
-
   chromium-bidi@5.1.0(devtools-protocol@0.0.1452169):
     dependencies:
       devtools-protocol: 0.0.1452169
@@ -9646,8 +9627,6 @@ snapshots:
 
   readdirp@4.1.2: {}
 
-  readdirp@5.0.0: {}
-
   reflect-metadata@0.2.2: {}
 
   regenerator-runtime@0.14.1: {}

readme.hints.md

@@ -1,33 +1,120 @@
 # smartchok - Technical Hints
 
-## Chokidar 5.x Migration (2024)
+## Native File Watching (v2.0.0+)
 
-The module has been migrated to `chokidar` 5.x (from 4.x). Key changes:
+The module now uses native file watching APIs instead of chokidar, providing cross-runtime support for Node.js, Deno, and Bun.
+
+### Exported Class
+
+The package exports the `Smartwatch` class (not `Smartchok`):
+```typescript
+import { Smartwatch } from '@push.rocks/smartchok';
+```
+
+### Architecture
+
+```
+ts/
+├── smartwatch.classes.smartwatch.ts   # Main Smartwatch class
+├── smartwatch.plugins.ts              # Dependencies (smartenv, picomatch, etc.)
+├── watchers/
+│   ├── index.ts                       # Factory with runtime detection
+│   ├── interfaces.ts                  # IWatcher interface and types
+│   ├── watcher.node.ts                # Node.js/Bun implementation (fs.watch)
+│   └── watcher.deno.ts                # Deno implementation (Deno.watchFs)
+└── utils/
+    └── write-stabilizer.ts            # awaitWriteFinish polling implementation
+```
+
+### Runtime Detection
+
+Uses `@push.rocks/smartenv` v6.x for runtime detection:
+- **Node.js/Bun**: Uses native `fs.watch()` with `{ recursive: true }`
+- **Deno**: Uses `Deno.watchFs()` async iterable
 
 ### Dependencies
-- **Current**: `chokidar` 5.x and `picomatch`
+
-- **Historical**: Was previously using `@tempfix/watcher` before chokidar 4.x
+- **picomatch**: Glob pattern matching (zero deps, well-maintained)
+- **@push.rocks/smartenv**: Runtime detection (Node.js, Deno, Bun)
+- **@push.rocks/smartrx**: RxJS Subject/Observable management
+- **@push.rocks/smartpromise**: Deferred promise utilities
+- **@push.rocks/lik**: Stringmap for pattern storage
 
 ### Why picomatch?
-Chokidar 4.x+ removed built-in glob pattern support. We use `picomatch` to maintain backward compatibility and provide glob pattern matching functionality.
 
-### Implementation Details
+Native file watching APIs don't support glob patterns. Picomatch provides glob pattern matching with:
-1. **Glob pattern extraction**: The `getGlobBase()` method extracts base directories from glob patterns
+- Zero dependencies
-2. **Pattern matching**: Each glob pattern is compiled to a picomatch matcher function
+- 164M+ weekly downloads
-3. **Event filtering**: File system events are filtered based on glob patterns before being emitted
+- Excellent security profile
-4. **Path normalization**: Paths are normalized to handle different formats (with/without leading ./)
+- Full glob syntax support
 
 ### Event Handling
-Chokidar 5.x events are mapped 1:1 with smartchok events:
+
-- `add`, `change`, `unlink`: File events
+Native events are normalized to a consistent interface:
-- `addDir`, `unlinkDir`: Directory events
+
-- `error`: Error events
+| Node.js/Bun Event | Deno Event | Normalized Event |
-- `raw`: Raw events from underlying watchers
+|-------------------|------------|------------------|
-- `ready`: Emitted when initial scan is complete
+| `rename` (file exists) | `create` | `add` |
+| `rename` (file gone) | `remove` | `unlink` |
+| `change` | `modify` | `change` |
+
+### awaitWriteFinish Implementation
+
+The `WriteStabilizer` class replaces chokidar's built-in write stabilization:
+- Polls file size until stable (configurable threshold: 300ms default)
+- Configurable poll interval (100ms default)
+- Handles file deletion during write detection
+
+### Platform Requirements
+
+- **Node.js 20+**: Required for native recursive watching on all platforms
+- **Deno**: Works on all versions with `Deno.watchFs()`
+- **Bun**: Uses Node.js compatibility layer
+
+### Robustness Features (v6.1.0+)
+
+The Node.js watcher includes automatic recovery mechanisms:
+
+**Auto-restart on failure:**
+- Watchers automatically restart when errors occur
+- Exponential backoff (1s → 30s max)
+- Maximum 3 retry attempts before giving up
+
+**Health check monitoring:**
+- 30-second periodic health checks
+- Detects when watched paths disappear
+- Triggers automatic restart when issues detected
+
+**Error isolation:**
+- Subscriber errors don't crash the watcher
+- All events emitted via `safeEmit()` with try-catch
+
+**Verbose logging:**
+- All lifecycle events logged with `[smartwatch]` prefix
+- Helps debug watcher issues in production
+
+Example log output:
+```
+[smartwatch] Starting watcher for 1 base path(s)...
+[smartwatch] Started watching: ./test/assets/
+[smartwatch] Starting health check (every 30s)
+[smartwatch] Watcher started with 1 active watcher(s)
+[smartwatch] Health check: 1 watchers active
+```
 
 ### Testing
-All existing tests pass without modification, confirming backward compatibility is maintained.
 
-## Dev Dependencies (2024)
+```bash
-- Using `@git.zone/tstest` v3.x with tapbundle (`import { tap, expect } from '@git.zone/tstest/tapbundle'`)
+pnpm test
-- Removed deprecated `@push.rocks/tapbundle`
+```
+
+Tests verify:
+- Creating Smartwatch instance
+- Adding glob patterns
+- Receiving 'add' events for new files
+- Graceful shutdown
+
+## Dev Dependencies
+
+- Using `@git.zone/tstest` v3.x with tapbundle
+- Import from `@git.zone/tstest/tapbundle`

readme.md

@@ -1,6 +1,6 @@
-# @push.rocks/smartchok
+# @push.rocks/smartwatch
 
-A smart wrapper for chokidar 5.x with glob pattern support, RxJS observable integration, and enhanced file watching features.
+A lightweight, cross-runtime file watcher with glob pattern support for **Node.js**, **Deno**, and **Bun**. Zero heavyweight dependencies — just native file watching APIs for maximum performance. 🚀
 
 ## Issue Reporting and Security
 
@@ -9,28 +9,31 @@ For reporting bugs, issues, or security vulnerabilities, please visit [community
 ## Install
 
 ```sh
-npm install @push.rocks/smartchok
+npm install @push.rocks/smartwatch
 # or
-pnpm add @push.rocks/smartchok
+pnpm add @push.rocks/smartwatch
 ```
 
 ## Features
 
-🔍 **Glob Pattern Support** - Watch files using glob patterns like `**/*.ts` or `src/**/*.js`
+🌐 **Cross-Runtime** — Works seamlessly on Node.js 20+, Deno, and Bun
-📡 **RxJS Observables** - Subscribe to file system events using reactive streams
+🔍 **Glob Pattern Support** — Watch files using familiar patterns like `**/*.ts` and `src/**/*.{js,jsx}`
-🔄 **Dynamic Watching** - Add or remove watch patterns at runtime
+📡 **RxJS Observables** — Subscribe to file system events using reactive streams
-⚡ **Chokidar 5.x** - Built on the latest chokidar with improved performance
+🔄 **Dynamic Watching** — Add or remove watch patterns at runtime
-🎯 **TypeScript First** - Full TypeScript support with comprehensive type definitions
+⚡ **Native Performance** — Uses `fs.watch()` on Node.js/Bun and `Deno.watchFs()` on Deno
+✨ **Write Stabilization** — Built-in debouncing prevents duplicate events during file writes
+🎯 **TypeScript First** — Full TypeScript support with comprehensive type definitions
+📦 **Minimal Footprint** — No chokidar, no FSEvents bindings — just ~500 lines of focused code
 
 ## Usage
 
 ### Basic Setup
 
 ```typescript
-import { Smartchok } from '@push.rocks/smartchok';
+import { Smartwatch } from '@push.rocks/smartwatch';
 
 // Create a watcher with glob patterns
-const watcher = new Smartchok([
+const watcher = new Smartwatch([
   './src/**/*.ts',           // Watch all TypeScript files in src
   './public/assets/**/*'     // Watch all files in public/assets
 ]);
@@ -50,6 +53,7 @@ const changeObservable = await watcher.getObservableFor('change');
 changeObservable.subscribe({
   next: ([path, stats]) => {
     console.log(`File changed: ${path}`);
+    console.log(`New size: ${stats?.size} bytes`);
   },
   error: (err) => {
     console.error(`Error: ${err}`);
@@ -71,23 +75,22 @@ unlinkObservable.subscribe(([path]) => {
 
 ### Supported Events
 
-| Event | Description |
+| Event       | Description                    |
-|-------|-------------|
+|-------------|--------------------------------|
-| `add` | File has been added |
+| `add`       | File has been added            |
-| `addDir` | Directory has been added |
+| `addDir`    | Directory has been added       |
-| `change` | File has been changed |
+| `change`    | File has been modified         |
-| `unlink` | File has been removed |
+| `unlink`    | File has been removed          |
-| `unlinkDir` | Directory has been removed |
+| `unlinkDir` | Directory has been removed     |
-| `error` | Error occurred |
+| `error`     | Error occurred                 |
-| `ready` | Initial scan complete |
+| `ready`     | Initial scan complete          |
-| `raw` | Raw event from the underlying watcher |
 
 ### Dynamic Watch Management
 
 Add or remove patterns while the watcher is running:
 
 ```typescript
-const watcher = new Smartchok(['./src/**/*.ts']);
+const watcher = new Smartwatch(['./src/**/*.ts']);
 await watcher.start();
 
 // Add more patterns to watch
@@ -107,11 +110,11 @@ await watcher.stop();
 ### Complete Example
 
 ```typescript
-import { Smartchok } from '@push.rocks/smartchok';
+import { Smartwatch } from '@push.rocks/smartwatch';
 
 async function watchProject() {
   // Initialize with patterns
-  const watcher = new Smartchok([
+  const watcher = new Smartwatch([
     './src/**/*.ts',
     './package.json'
   ]);
@@ -152,56 +155,107 @@ watchProject();
 
 ## How It Works
 
-Since chokidar 4.x+ no longer supports glob patterns natively, smartchok handles glob pattern matching internally using [picomatch](https://github.com/micromatch/picomatch). This means you get the familiar glob syntax while benefiting from chokidar's efficient file watching capabilities.
+smartwatch uses native file watching APIs for each runtime:
 
-When you provide glob patterns:
+| Runtime         | API Used                         |
-1. **Base path extraction** - smartchok extracts the static base path from each pattern
+|-----------------|----------------------------------|
-2. **Efficient watching** - chokidar watches the base directories
+| **Node.js 20+** | `fs.watch({ recursive: true })`  |
-3. **Pattern filtering** - Events are filtered through picomatch matchers before being emitted
+| **Deno**        | `Deno.watchFs()`                 |
+| **Bun**         | Node.js compatibility layer      |
+
+### Under the Hood
+
+Native file watching APIs don't support glob patterns directly, so smartwatch handles pattern matching internally:
+
+1. **Base path extraction** — Extracts the static portion from each glob pattern (e.g., `./src/` from `./src/**/*.ts`)
+2. **Efficient watching** — Native watchers monitor only the base directories
+3. **Pattern filtering** — Events are filtered through [picomatch](https://github.com/micromatch/picomatch) matchers before emission
+4. **Event deduplication** — Built-in throttling prevents duplicate events from rapid file operations
+
+### Write Stabilization
+
+smartwatch includes built-in write stabilization (similar to chokidar's `awaitWriteFinish`). When a file is being written, events are held until the file size stabilizes, preventing multiple events for a single write operation.
+
+Default settings:
+- **Stability threshold**: 300ms
+- **Poll interval**: 100ms
+
+## Requirements
+
+| Runtime         | Version                                |
+|-----------------|----------------------------------------|
+| **Node.js**     | 20+ (required for native recursive watching) |
+| **Deno**        | Any version with `Deno.watchFs()` support |
+| **Bun**         | Uses Node.js compatibility             |
 
 ## API Reference
 
-### `Smartchok`
+### `Smartwatch`
 
 #### Constructor
 
 ```typescript
-new Smartchok(patterns: string[])
+new Smartwatch(patterns: string[])
 ```
 
-Creates a new Smartchok instance with the given glob patterns.
+Creates a new Smartwatch instance with the given glob patterns.
+
+**Parameters:**
+- `patterns` — Array of glob patterns to watch (e.g., `['./src/**/*.ts', './config/*.json']`)
 
 #### Methods
 
-| Method | Returns | Description |
+| Method                                 | Returns                                        | Description                                    |
-|--------|---------|-------------|
+|----------------------------------------|------------------------------------------------|------------------------------------------------|
-| `start()` | `Promise<void>` | Starts watching for file changes |
+| `start()`                              | `Promise<void>`                                | Starts watching for file changes               |
-| `stop()` | `Promise<void>` | Stops the file watcher |
+| `stop()`                               | `Promise<void>`                                | Stops the file watcher and cleans up resources |
-| `add(patterns: string[])` | `void` | Adds patterns to watch |
+| `add(patterns: string[])`              | `void`                                         | Adds additional patterns to watch              |
-| `remove(pattern: string)` | `void` | Removes a pattern from watching |
+| `remove(pattern: string)`              | `void`                                         | Removes a pattern from the watch list          |
-| `getObservableFor(event: TFsEvent)` | `Promise<Observable<[string, Stats]>>` | Returns an RxJS observable for the specified event |
+| `getObservableFor(event: TFsEvent)`    | `Promise<Observable<[string, Stats]>>`         | Returns an RxJS observable for the specified event |
 
 #### Properties
 
-| Property | Type | Description |
+| Property | Type                                      | Description              |
-|----------|------|-------------|
+|----------|-------------------------------------------|--------------------------|
-| `status` | `'idle' \| 'starting' \| 'watching'` | Current watcher status |
+| `status` | `'idle' \| 'starting' \| 'watching'`      | Current watcher status   |
+
+### Types
+
+```typescript
+type TFsEvent = 'add' | 'addDir' | 'change' | 'error' | 'unlink' | 'unlinkDir' | 'ready' | 'raw';
+type TSmartwatchStatus = 'idle' | 'starting' | 'watching';
+```
+
+## Why smartwatch?
+
+| Feature                 | smartwatch            | chokidar           |
+|-------------------------|----------------------|--------------------|
+| Native API              | ✅ Direct `fs.watch`  | ❌ FSEvents bindings |
+| Cross-runtime           | ✅ Node, Deno, Bun    | ❌ Node only        |
+| Dependencies            | 4 small packages     | ~20 packages       |
+| Write stabilization     | ✅ Built-in           | ✅ Built-in         |
+| Glob support            | ✅ picomatch          | ✅ anymatch         |
+| Bundle size             | ~15KB                | ~200KB+            |
+
+If you need a lightweight file watcher without native compilation headaches, smartwatch has you covered.
 
 ## License and Legal Information
 
-This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository.
+This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the [LICENSE](./LICENSE) file.
 
 **Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.
 
 ### Trademarks
 
-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.
+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 or third parties, 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 or the guidelines of the respective third-party owners, and any usage must be approved in writing. Third-party trademarks used herein are the property of their respective owners and used only in a descriptive manner, e.g. for an implementation of an API or similar.
 
 ### Company Information
 
 Task Venture Capital GmbH
-Registered at District court Bremen HRB 35230 HB, Germany
+Registered at District Court Bremen HRB 35230 HB, Germany
 
-For any legal inquiries or if you require further information, please contact us via email at hello@task.vc.
+For any legal inquiries or further information, please contact us via email at hello@task.vc.
 
 By using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.

test/test.ts

@@ -1,5 +1,5 @@
 import { tap, expect } from '@git.zone/tstest/tapbundle';
-import * as smartchok from '../ts/index.js';
+import * as smartwatch from '../ts/index.js';
 import * as smartfile from '@push.rocks/smartfile';
 import * as smartpromise from '@push.rocks/smartpromise';
 import * as smartrx from '@push.rocks/smartrx';
@@ -11,22 +11,22 @@ if (process.env.CI) {
   process.exit(0);
 }
 
-let testSmartchok: smartchok.Smartchok;
+let testSmartwatch: smartwatch.Smartwatch;
 let testAddObservable: smartrx.rxjs.Observable<[string, fs.Stats]>;
 let testSubscription: smartrx.rxjs.Subscription;
 tap.test('should create a new instance', async () => {
-  testSmartchok = new smartchok.Smartchok([]);
+  testSmartwatch = new smartwatch.Smartwatch([]);
-  expect(testSmartchok).toBeInstanceOf(smartchok.Smartchok);
+  expect(testSmartwatch).toBeInstanceOf(smartwatch.Smartwatch);
 });
 
 tap.test('should add some files to watch and start', async () => {
-  testSmartchok.add(['./test/**/*.txt']);
+  testSmartwatch.add(['./test/**/*.txt']);
-  await testSmartchok.start()
+  await testSmartwatch.start()
-  testSmartchok.add(['./test/**/*.md']);
+  testSmartwatch.add(['./test/**/*.md']);
 });
 
 tap.test('should get an observable for a certain event', async () => {
-  await testSmartchok.getObservableFor('add').then(async (observableArg) => {
+  await testSmartwatch.getObservableFor('add').then(async (observableArg) => {
     testAddObservable = observableArg;
   });
 });
@@ -44,7 +44,7 @@ tap.test('should register an add operation', async () => {
 
 tap.test('should stop the watch process', async (tools) => {
   await tools.delayFor(10000);
-  testSmartchok.stop();
+  testSmartwatch.stop();
 });
 
 export default tap.start();

ts/00_commitinfo_data.ts

@@ -2,7 +2,7 @@
  * autocreated commitinfo by @push.rocks/commitinfo
  */
 export const commitinfo = {
-  name: '@push.rocks/smartchok',
+  name: '@push.rocks/smartwatch',
-  version: '1.2.0',
+  version: '6.1.0',
-  description: 'A smart wrapper for chokidar 5.x with glob pattern support and enhanced features.'
+  description: 'A cross-runtime file watcher with glob pattern support for Node.js, Deno, and Bun.'
 }

ts/index.ts

@@ -1 +1 @@
-export * from './smartchok.classes.smartchok.js';
+export * from './smartwatch.classes.smartwatch.js';

ts/smartwatch.classes.smartwatch.ts

@@ -1,7 +1,8 @@
-import * as plugins from './smartchok.plugins.js';
+import * as plugins from './smartwatch.plugins.js';
 import { Stringmap } from '@push.rocks/lik';
+import { createWatcher, type IWatcher, type IWatchEvent, type TWatchEventType } from './watchers/index.js';
 
-export type TSmartchokStatus = 'idle' | 'starting' | 'watching';
+export type TSmartwatchStatus = 'idle' | 'starting' | 'watching';
 export type TFsEvent =
   | 'add'
   | 'addDir'
@@ -13,22 +14,31 @@ export type TFsEvent =
   | 'raw';
 
 /**
- * Smartchok allows easy wathcing of files
+ * Smartwatch allows easy watching of files
+ * Uses native file watching APIs (Node.js fs.watch, Deno.watchFs) for cross-runtime support
  */
-export class Smartchok {
+export class Smartwatch {
   public watchStringmap = new Stringmap();
-  public status: TSmartchokStatus = 'idle';
+  public status: TSmartwatchStatus = 'idle';
-  private watcher: plugins.chokidar.FSWatcher;
+  private watcher: IWatcher | null = null;
   private globPatterns: string[] = [];
   private globMatchers: Map<string, (path: string) => boolean> = new Map();
-  private watchingDeferred = plugins.smartpromise.defer<void>(); // used to run things when watcher is initialized
+  private watchingDeferred = plugins.smartpromise.defer<void>();
-  private eventObservablemap = new plugins.smartrx.Observablemap(); // register one observable per event
+
+  // Event subjects for each event type
+  private eventSubjects: Map<TFsEvent, plugins.smartrx.rxjs.Subject<[string, plugins.fs.Stats | undefined]>> = new Map();
 
   /**
-   * constructor of class smartchok
+   * constructor of class Smartwatch
    */
   constructor(watchArrayArg: string[]) {
     this.watchStringmap.addStringArray(watchArrayArg);
+
+    // Initialize subjects for each event type
+    const eventTypes: TFsEvent[] = ['add', 'addDir', 'change', 'error', 'unlink', 'unlinkDir', 'ready', 'raw'];
+    for (const eventType of eventTypes) {
+      this.eventSubjects.set(eventType, new plugins.smartrx.rxjs.Subject());
+    }
   }
 
   private getGlobBase(globPattern: string) {
@@ -80,11 +90,12 @@ export class Smartchok {
   ): Promise<plugins.smartrx.rxjs.Observable<[string, plugins.fs.Stats]>> {
     const done = plugins.smartpromise.defer<plugins.smartrx.rxjs.Observable<any>>();
     this.watchingDeferred.promise.then(() => {
-      const eventObservable = this.eventObservablemap.getSubjectForEmitterEvent(
+      const subject = this.eventSubjects.get(fsEvent);
-        this.watcher,
+      if (subject) {
-        fsEvent
+        done.resolve(subject.asObservable());
-      );
+      } else {
-      done.resolve(eventObservable);
+        done.reject(new Error(`Unknown event type: ${fsEvent}`));
+      }
     });
     return done.promise;
   }
@@ -93,18 +104,17 @@ export class Smartchok {
    * starts the watcher
    * @returns Promise<void>
    */
-  public start(): Promise<void> {
+  public async start(): Promise<void> {
-    const done = plugins.smartpromise.defer<void>();
     this.status = 'starting';
-    
+
     // Store original glob patterns and create matchers
     this.globPatterns = this.watchStringmap.getStringArray();
     const basePaths = new Set<string>();
-    
+
     this.globPatterns.forEach((pattern) => {
       const basePath = this.getGlobBase(pattern);
       basePaths.add(basePath);
-      
+
       // Create a picomatch matcher for each glob pattern
       const matcher = plugins.picomatch(pattern, {
         dot: true,
@@ -112,62 +122,62 @@ export class Smartchok {
       });
       this.globMatchers.set(pattern, matcher);
     });
-    
+
-    // Convert Set to Array for chokidar
+    // Convert Set to Array for the watcher
     const watchPaths = Array.from(basePaths);
     console.log('Base paths to watch:', watchPaths);
-    
+
-    this.watcher = plugins.chokidar.watch(watchPaths, {
+    // Create the platform-appropriate watcher
-      persistent: true,
+    this.watcher = await createWatcher({
-      ignoreInitial: false,
+      basePaths: watchPaths,
-      followSymlinks: false,
       depth: 4,
-      awaitWriteFinish: {
+      followSymlinks: false,
-        stabilityThreshold: 300,
+      debounceMs: 100
-        pollInterval: 100
+    });
-      },
+
-      ignored: (path: string, stats?: plugins.fs.Stats) => {
+    // Subscribe to watcher events and dispatch to appropriate subjects
-        // Don't filter during initialization - let chokidar watch everything
+    this.watcher.events$.subscribe((event: IWatchEvent) => {
-        // We'll filter events as they come in
+      this.handleWatchEvent(event);
-        return false;
+    });
+
+    // Start the watcher
+    await this.watcher.start();
+
+    this.status = 'watching';
+    this.watchingDeferred.resolve();
+  }
+
+  /**
+   * Handle events from the native watcher
+   */
+  private handleWatchEvent(event: IWatchEvent): void {
+    // Handle ready event
+    if (event.type === 'ready') {
+      const subject = this.eventSubjects.get('ready');
+      if (subject) {
+        subject.next(['', undefined]);
       }
-    });
+      return;
-    
+    }
-    // Set up event handlers with glob filtering
+
-    const fileEvents: Array<'add' | 'change' | 'unlink' | 'addDir' | 'unlinkDir'> = 
+    // Handle error event
-      ['add', 'addDir', 'change', 'unlink', 'unlinkDir'];
+    if (event.type === 'error') {
-    
+      const subject = this.eventSubjects.get('error');
-    // Handle file events
+      if (subject) {
-    fileEvents.forEach(eventName => {
+        subject.next([event.error?.message || 'Unknown error', undefined]);
-      this.watcher.on(eventName, (path: string, stats?: plugins.fs.Stats) => {
-        // Only emit event if the path matches our glob patterns
-        if (this.shouldWatchPath(path)) {
-          this.eventObservablemap.getSubjectForEmitterEvent(this.watcher, eventName)
-            .next([path, stats]);
-        }
-      });
-    });
-    
-    // Handle error events
-    this.watcher.on('error', (error: Error) => {
-      this.eventObservablemap.getSubjectForEmitterEvent(this.watcher, 'error')
-        .next([error, undefined]);
-    });
-    
-    // Handle raw events
-    this.watcher.on('raw', (eventType: string, path: string, details: any) => {
-      if (this.shouldWatchPath(path)) {
-        this.eventObservablemap.getSubjectForEmitterEvent(this.watcher, 'raw')
-          .next([path, undefined]);
       }
-    });
+      return;
-    
+    }
-    this.watcher.on('ready', () => {
+
-      this.status = 'watching';
+    // Filter file/directory events by glob patterns
-      this.watchingDeferred.resolve();
+    if (!this.shouldWatchPath(event.path)) {
-      done.resolve();
+      return;
-    });
+    }
-    return done.promise;
+
+    const subject = this.eventSubjects.get(event.type as TFsEvent);
+    if (subject) {
+      subject.next([event.path, event.stats]);
+    }
   }
 
   /**
@@ -175,8 +185,12 @@ export class Smartchok {
    */
   public async stop() {
     const closeWatcher = async () => {
-      await this.watcher.close();
+      if (this.watcher) {
+        await this.watcher.stop();
+        this.watcher = null;
+      }
     };
+
     if (this.status === 'watching') {
       console.log('closing while watching');
       await closeWatcher();
@@ -184,8 +198,10 @@ export class Smartchok {
       await this.watchingDeferred.promise;
       await closeWatcher();
     }
+
+    this.status = 'idle';
   }
-  
+
   /**
    * Checks if a path should be watched based on glob patterns
    */
@@ -195,7 +211,7 @@ export class Smartchok {
     if (normalizedPath.startsWith('./')) {
       normalizedPath = normalizedPath.substring(2);
     }
-    
+
     // Check if the path matches any of our glob patterns
     for (const [pattern, matcher] of this.globMatchers) {
       // Also normalize the pattern for comparison
@@ -203,12 +219,12 @@ export class Smartchok {
       if (normalizedPattern.startsWith('./')) {
         normalizedPattern = normalizedPattern.substring(2);
       }
-      
+
       // Try matching with both the original pattern and normalized
       if (matcher(normalizedPath) || matcher(filePath)) {
         return true;
       }
-      
+
       // Also try matching without the leading path
       const withoutLeading = 'test/' + normalizedPath.split('test/').slice(1).join('test/');
       if (matcher(withoutLeading)) {

ts/smartwatch.plugins.ts

@@ -11,18 +11,18 @@ export {
 import * as lik from '@push.rocks/lik';
 import * as smartpromise from '@push.rocks/smartpromise';
 import * as smartrx from '@push.rocks/smartrx';
+import { Smartenv } from '@push.rocks/smartenv';
 
 export {
   lik,
   smartpromise,
-  smartrx
+  smartrx,
+  Smartenv
 }
 
 // thirdparty scope
-import * as chokidar from 'chokidar';
 import picomatch from 'picomatch';
 
 export {
-  chokidar,
   picomatch,
 }

ts/watchers/index.ts

@@ -0,0 +1,32 @@
+import { Smartenv } from '@push.rocks/smartenv';
+import type { IWatcher, IWatcherOptions, IWatchEvent, TWatchEventType } from './interfaces.js';
+
+export type { IWatcher, IWatcherOptions, IWatchEvent, TWatchEventType };
+
+/**
+ * Creates a platform-appropriate file watcher based on the current runtime
+ * Uses @push.rocks/smartenv for runtime detection
+ */
+export async function createWatcher(options: IWatcherOptions): Promise<IWatcher> {
+  const env = new Smartenv();
+
+  if (env.isDeno) {
+    // Deno runtime - use Deno.watchFs
+    const { DenoWatcher } = await import('./watcher.deno.js');
+    return new DenoWatcher(options);
+  } else {
+    // Node.js or Bun - both use fs.watch (Bun has Node.js compatibility)
+    const { NodeWatcher } = await import('./watcher.node.js');
+    return new NodeWatcher(options);
+  }
+}
+
+/**
+ * Default watcher options
+ */
+export const defaultWatcherOptions: IWatcherOptions = {
+  basePaths: [],
+  depth: 4,
+  followSymlinks: false,
+  debounceMs: 100
+};

ts/watchers/interfaces.ts

@@ -0,0 +1,45 @@
+import type * as fs from 'fs';
+import type * as smartrx from '@push.rocks/smartrx';
+
+/**
+ * File system event types that the watcher emits
+ */
+export type TWatchEventType = 'add' | 'addDir' | 'change' | 'unlink' | 'unlinkDir' | 'ready' | 'error';
+
+/**
+ * Data structure for watch events
+ */
+export interface IWatchEvent {
+  type: TWatchEventType;
+  path: string;
+  stats?: fs.Stats;
+  error?: Error;
+}
+
+/**
+ * Options for creating a watcher
+ */
+export interface IWatcherOptions {
+  /** Base paths to watch (extracted from glob patterns) */
+  basePaths: string[];
+  /** Maximum directory depth to watch */
+  depth: number;
+  /** Whether to follow symbolic links */
+  followSymlinks: boolean;
+  /** Debounce time in ms - events for the same file within this window are coalesced */
+  debounceMs: number;
+}
+
+/**
+ * Common interface for file watchers across runtimes
+ */
+export interface IWatcher {
+  /** Start watching files */
+  start(): Promise<void>;
+  /** Stop watching and clean up */
+  stop(): Promise<void>;
+  /** Whether the watcher is currently active */
+  readonly isWatching: boolean;
+  /** Subject that emits watch events */
+  readonly events$: smartrx.rxjs.Subject<IWatchEvent>;
+}

ts/watchers/watcher.deno.ts

@@ -0,0 +1,290 @@
+import * as smartrx from '@push.rocks/smartrx';
+import type { IWatcher, IWatcherOptions, IWatchEvent, TWatchEventType } from './interfaces.js';
+
+// Type definitions for Deno APIs (these exist at runtime in Deno)
+declare const Deno: {
+  watchFs(paths: string | string[], options?: { recursive?: boolean }): AsyncIterable<{
+    kind: 'create' | 'modify' | 'remove' | 'access' | 'any' | 'other';
+    paths: string[];
+    flag?: { rescan: boolean };
+  }> & { close(): void };
+  stat(path: string): Promise<{
+    isFile: boolean;
+    isDirectory: boolean;
+    isSymlink: boolean;
+    size: number;
+    mtime: Date | null;
+    atime: Date | null;
+    birthtime: Date | null;
+    mode: number | null;
+    uid: number | null;
+    gid: number | null;
+  }>;
+  lstat(path: string): Promise<{
+    isFile: boolean;
+    isDirectory: boolean;
+    isSymlink: boolean;
+    size: number;
+    mtime: Date | null;
+    atime: Date | null;
+    birthtime: Date | null;
+    mode: number | null;
+    uid: number | null;
+    gid: number | null;
+  }>;
+  readDir(path: string): AsyncIterable<{
+    name: string;
+    isFile: boolean;
+    isDirectory: boolean;
+    isSymlink: boolean;
+  }>;
+};
+
+/**
+ * Convert Deno stat to Node.js-like Stats object
+ */
+function denoStatToNodeStats(denoStat: Awaited<ReturnType<typeof Deno.stat>>): any {
+  return {
+    isFile: () => denoStat.isFile,
+    isDirectory: () => denoStat.isDirectory,
+    isSymbolicLink: () => denoStat.isSymlink,
+    size: denoStat.size,
+    mtime: denoStat.mtime,
+    atime: denoStat.atime,
+    birthtime: denoStat.birthtime,
+    mode: denoStat.mode,
+    uid: denoStat.uid,
+    gid: denoStat.gid
+  };
+}
+
+/**
+ * Deno file watcher using native Deno.watchFs API
+ */
+export class DenoWatcher implements IWatcher {
+  private watcher: ReturnType<typeof Deno.watchFs> | null = null;
+  private watchedFiles: Set<string> = new Set();
+  private _isWatching = false;
+
+  // Debounce: pending emits per file path
+  private pendingEmits: Map<string, ReturnType<typeof setTimeout>> = new Map();
+
+  public readonly events$ = new smartrx.rxjs.Subject<IWatchEvent>();
+
+  constructor(private options: IWatcherOptions) {}
+
+  /**
+   * Check if a file is a temporary file created by editors
+   */
+  private isTemporaryFile(filePath: string): boolean {
+    const basename = filePath.split('/').pop() || '';
+    // Editor temp files: *.tmp.*, *.swp, *.swx, *~, .#*
+    if (basename.includes('.tmp.')) return true;
+    if (basename.endsWith('.swp') || basename.endsWith('.swx')) return true;
+    if (basename.endsWith('~')) return true;
+    if (basename.startsWith('.#')) return true;
+    return false;
+  }
+
+  get isWatching(): boolean {
+    return this._isWatching;
+  }
+
+  async start(): Promise<void> {
+    if (this._isWatching) {
+      return;
+    }
+
+    try {
+      // Start watching all base paths
+      this.watcher = Deno.watchFs(this.options.basePaths, { recursive: true });
+      this._isWatching = true;
+
+      // Perform initial scan
+      for (const basePath of this.options.basePaths) {
+        await this.scanDirectory(basePath, 0);
+      }
+
+      // Emit ready event
+      this.events$.next({ type: 'ready', path: '' });
+
+      // Start processing events
+      this.processEvents();
+    } catch (error: any) {
+      this.events$.next({ type: 'error', path: '', error });
+      throw error;
+    }
+  }
+
+  async stop(): Promise<void> {
+    this._isWatching = false;
+
+    // Cancel all pending debounced emits
+    for (const timeout of this.pendingEmits.values()) {
+      clearTimeout(timeout);
+    }
+    this.pendingEmits.clear();
+
+    // Close the watcher
+    if (this.watcher) {
+      (this.watcher as any).close();
+      this.watcher = null;
+    }
+
+    this.watchedFiles.clear();
+  }
+
+  /**
+   * Process events from the Deno watcher
+   */
+  private async processEvents(): Promise<void> {
+    if (!this.watcher) {
+      return;
+    }
+
+    try {
+      for await (const event of this.watcher) {
+        if (!this._isWatching) {
+          break;
+        }
+
+        for (const filePath of event.paths) {
+          this.handleDenoEvent(event.kind, filePath);
+        }
+      }
+    } catch (error: any) {
+      if (this._isWatching) {
+        this.events$.next({ type: 'error', path: '', error });
+      }
+    }
+  }
+
+  /**
+   * Handle a Deno file system event - debounce and normalize
+   */
+  private handleDenoEvent(
+    kind: 'create' | 'modify' | 'remove' | 'access' | 'any' | 'other',
+    filePath: string
+  ): void {
+    // Ignore 'access' events (just reading the file)
+    if (kind === 'access') {
+      return;
+    }
+
+    // Skip temporary files created by editors (atomic saves)
+    if (this.isTemporaryFile(filePath)) {
+      return;
+    }
+
+    // Debounce: cancel any pending emit for this file
+    const existing = this.pendingEmits.get(filePath);
+    if (existing) {
+      clearTimeout(existing);
+    }
+
+    // Schedule debounced emit
+    const timeout = setTimeout(() => {
+      this.pendingEmits.delete(filePath);
+      this.emitFileEvent(filePath, kind);
+    }, this.options.debounceMs);
+
+    this.pendingEmits.set(filePath, timeout);
+  }
+
+  /**
+   * Emit the actual file event after debounce
+   */
+  private async emitFileEvent(
+    filePath: string,
+    kind: 'create' | 'modify' | 'remove' | 'access' | 'any' | 'other'
+  ): Promise<void> {
+    try {
+      if (kind === 'create') {
+        const stats = await this.statSafe(filePath);
+        if (stats) {
+          this.watchedFiles.add(filePath);
+          const eventType: TWatchEventType = stats.isDirectory() ? 'addDir' : 'add';
+          this.events$.next({ type: eventType, path: filePath, stats });
+        }
+      } else if (kind === 'modify') {
+        const stats = await this.statSafe(filePath);
+        if (stats && !stats.isDirectory()) {
+          this.events$.next({ type: 'change', path: filePath, stats });
+        }
+      } else if (kind === 'remove') {
+        const wasDirectory = this.isKnownDirectory(filePath);
+        this.watchedFiles.delete(filePath);
+        this.events$.next({
+          type: wasDirectory ? 'unlinkDir' : 'unlink',
+          path: filePath
+        });
+      }
+    } catch (error: any) {
+      this.events$.next({ type: 'error', path: filePath, error });
+    }
+  }
+
+  /**
+   * Scan directory and emit 'add' events for existing files
+   */
+  private async scanDirectory(dirPath: string, depth: number): Promise<void> {
+    if (depth > this.options.depth) {
+      return;
+    }
+
+    try {
+      for await (const entry of Deno.readDir(dirPath)) {
+        const fullPath = `${dirPath}/${entry.name}`;
+
+        // Skip temp files during initial scan too
+        if (this.isTemporaryFile(fullPath)) {
+          continue;
+        }
+
+        const stats = await this.statSafe(fullPath);
+
+        if (!stats) {
+          continue;
+        }
+
+        if (entry.isDirectory) {
+          this.watchedFiles.add(fullPath);
+          this.events$.next({ type: 'addDir', path: fullPath, stats });
+          await this.scanDirectory(fullPath, depth + 1);
+        } else if (entry.isFile) {
+          this.watchedFiles.add(fullPath);
+          this.events$.next({ type: 'add', path: fullPath, stats });
+        }
+      }
+    } catch (error: any) {
+      if (error.code !== 'ENOENT' && error.code !== 'EACCES') {
+        this.events$.next({ type: 'error', path: dirPath, error });
+      }
+    }
+  }
+
+  /**
+   * Safely stat a path, returning null if it doesn't exist
+   */
+  private async statSafe(filePath: string): Promise<any | null> {
+    try {
+      const statFn = this.options.followSymlinks ? Deno.stat : Deno.lstat;
+      const denoStats = await statFn(filePath);
+      return denoStatToNodeStats(denoStats);
+    } catch {
+      return null;
+    }
+  }
+
+  /**
+   * Check if a path was known to be a directory
+   */
+  private isKnownDirectory(filePath: string): boolean {
+    for (const watched of this.watchedFiles) {
+      if (watched.startsWith(filePath + '/')) {
+        return true;
+      }
+    }
+    return false;
+  }
+}

ts/watchers/watcher.node.ts

@@ -0,0 +1,417 @@
+import * as fs from 'fs';
+import * as path from 'path';
+import * as smartrx from '@push.rocks/smartrx';
+import type { IWatcher, IWatcherOptions, IWatchEvent, TWatchEventType } from './interfaces.js';
+
+/**
+ * Node.js/Bun file watcher using native fs.watch API
+ */
+export class NodeWatcher implements IWatcher {
+  private watchers: Map<string, fs.FSWatcher> = new Map();
+  private watchedFiles: Set<string> = new Set();
+  private _isWatching = false;
+
+  // Debounce: pending emits per file path
+  private pendingEmits: Map<string, NodeJS.Timeout> = new Map();
+
+  // Restart tracking
+  private restartDelays: Map<string, number> = new Map();
+  private restartAttempts: Map<string, number> = new Map();
+  private healthCheckInterval: NodeJS.Timeout | null = null;
+
+  // Configuration constants
+  private static readonly MAX_RETRIES = 3;
+  private static readonly INITIAL_RESTART_DELAY = 1000;
+  private static readonly MAX_RESTART_DELAY = 30000;
+  private static readonly HEALTH_CHECK_INTERVAL = 30000;
+
+  public readonly events$ = new smartrx.rxjs.Subject<IWatchEvent>();
+
+  constructor(private options: IWatcherOptions) {}
+
+  /**
+   * Safely emit an event, catching any subscriber errors
+   */
+  private safeEmit(event: IWatchEvent): void {
+    try {
+      this.events$.next(event);
+    } catch (error) {
+      console.error('[smartwatch] Subscriber threw error (isolated):', error);
+      // Don't let subscriber errors kill the watcher
+    }
+  }
+
+  /**
+   * Restart a watcher after an error with exponential backoff
+   */
+  private async restartWatcher(basePath: string, error: Error): Promise<void> {
+    const attempts = (this.restartAttempts.get(basePath) || 0) + 1;
+    this.restartAttempts.set(basePath, attempts);
+
+    console.log(`[smartwatch] Watcher error for ${basePath}: ${error.message}`);
+    console.log(`[smartwatch] Restart attempt ${attempts}/${NodeWatcher.MAX_RETRIES}`);
+
+    if (attempts > NodeWatcher.MAX_RETRIES) {
+      console.error(`[smartwatch] Max retries exceeded for ${basePath}, giving up`);
+      this.safeEmit({
+        type: 'error',
+        path: basePath,
+        error: new Error(`Max restart retries (${NodeWatcher.MAX_RETRIES}) exceeded`)
+      });
+      return;
+    }
+
+    // Close failed watcher
+    const oldWatcher = this.watchers.get(basePath);
+    if (oldWatcher) {
+      try {
+        oldWatcher.close();
+      } catch {
+        // Ignore close errors
+      }
+      this.watchers.delete(basePath);
+    }
+
+    // Exponential backoff
+    const delay = this.restartDelays.get(basePath) || NodeWatcher.INITIAL_RESTART_DELAY;
+    console.log(`[smartwatch] Waiting ${delay}ms before restart...`);
+    await new Promise((resolve) => setTimeout(resolve, delay));
+    this.restartDelays.set(basePath, Math.min(delay * 2, NodeWatcher.MAX_RESTART_DELAY));
+
+    try {
+      await this.watchPath(basePath, 0);
+      console.log(`[smartwatch] Successfully restarted watcher for ${basePath}`);
+      this.restartDelays.set(basePath, NodeWatcher.INITIAL_RESTART_DELAY);
+      this.restartAttempts.set(basePath, 0);
+    } catch (restartError) {
+      console.error(`[smartwatch] Restart failed for ${basePath}:`, restartError);
+      this.restartWatcher(basePath, restartError as Error); // Recursive retry
+    }
+  }
+
+  /**
+   * Start periodic health checks to detect silent failures
+   */
+  private startHealthCheck(): void {
+    console.log('[smartwatch] Starting health check (every 30s)');
+    this.healthCheckInterval = setInterval(async () => {
+      console.log(`[smartwatch] Health check: ${this.watchers.size} watchers active`);
+      for (const [basePath] of this.watchers) {
+        const stats = await this.statSafe(basePath);
+        if (!stats && this._isWatching) {
+          console.error(`[smartwatch] Health check failed: ${basePath} no longer exists`);
+          this.safeEmit({
+            type: 'error',
+            path: basePath,
+            error: new Error('Watched path no longer exists')
+          });
+          this.restartWatcher(basePath, new Error('Watched path disappeared'));
+        }
+      }
+    }, NodeWatcher.HEALTH_CHECK_INTERVAL);
+  }
+
+  /**
+   * Stop health check interval
+   */
+  private stopHealthCheck(): void {
+    if (this.healthCheckInterval) {
+      clearInterval(this.healthCheckInterval);
+      this.healthCheckInterval = null;
+      console.log('[smartwatch] Stopped health check');
+    }
+  }
+
+  /**
+   * Check if a file is a temporary file created by editors
+   */
+  private isTemporaryFile(filePath: string): boolean {
+    const basename = path.basename(filePath);
+    // Editor temp files: *.tmp.*, *.swp, *.swx, *~, .#*
+    if (basename.includes('.tmp.')) return true;
+    if (basename.endsWith('.swp') || basename.endsWith('.swx')) return true;
+    if (basename.endsWith('~')) return true;
+    if (basename.startsWith('.#')) return true;
+    return false;
+  }
+
+  get isWatching(): boolean {
+    return this._isWatching;
+  }
+
+  async start(): Promise<void> {
+    if (this._isWatching) {
+      return;
+    }
+
+    console.log(`[smartwatch] Starting watcher for ${this.options.basePaths.length} base path(s)...`);
+
+    try {
+      // Start watching each base path
+      for (const basePath of this.options.basePaths) {
+        await this.watchPath(basePath, 0);
+      }
+
+      this._isWatching = true;
+
+      // Start health check monitoring
+      this.startHealthCheck();
+
+      // Perform initial scan to emit 'add' events for existing files
+      for (const basePath of this.options.basePaths) {
+        await this.scanDirectory(basePath, 0);
+      }
+
+      // Emit ready event
+      this.safeEmit({ type: 'ready', path: '' });
+      console.log(`[smartwatch] Watcher started with ${this.watchers.size} active watcher(s)`);
+    } catch (error: any) {
+      console.error('[smartwatch] Failed to start watcher:', error);
+      this.safeEmit({ type: 'error', path: '', error });
+      throw error;
+    }
+  }
+
+  async stop(): Promise<void> {
+    console.log('[smartwatch] Stopping watcher...');
+    this._isWatching = false;
+
+    // Stop health check monitoring
+    this.stopHealthCheck();
+
+    // Cancel all pending debounced emits
+    for (const timeout of this.pendingEmits.values()) {
+      clearTimeout(timeout);
+    }
+    this.pendingEmits.clear();
+
+    // Close all watchers
+    for (const [watchPath, watcher] of this.watchers) {
+      console.log(`[smartwatch] Closing watcher for: ${watchPath}`);
+      watcher.close();
+    }
+    this.watchers.clear();
+    this.watchedFiles.clear();
+
+    // Clear restart tracking state
+    this.restartDelays.clear();
+    this.restartAttempts.clear();
+
+    console.log('[smartwatch] Watcher stopped');
+  }
+
+  /**
+   * Start watching a path (file or directory)
+   */
+  private async watchPath(watchPath: string, depth: number): Promise<void> {
+    if (depth > this.options.depth) {
+      return;
+    }
+
+    try {
+      const stats = await this.statSafe(watchPath);
+      if (!stats) {
+        return;
+      }
+
+      if (stats.isDirectory()) {
+        // Watch the directory with recursive option (Node.js 20+ supports this on all platforms)
+        const watcher = fs.watch(
+          watchPath,
+          { recursive: true, persistent: true },
+          (eventType, filename) => {
+            if (filename) {
+              this.handleFsEvent(watchPath, filename, eventType);
+            }
+          }
+        );
+
+        watcher.on('error', (error) => {
+          console.error(`[smartwatch] FSWatcher error event on ${watchPath}:`, error);
+          this.safeEmit({ type: 'error', path: watchPath, error });
+          if (this._isWatching) {
+            this.restartWatcher(watchPath, error);
+          }
+        });
+
+        // Handle 'close' event - fs.watch can close without error
+        watcher.on('close', () => {
+          console.warn(`[smartwatch] FSWatcher closed unexpectedly for ${watchPath}`);
+          if (this._isWatching) {
+            this.restartWatcher(watchPath, new Error('Watcher closed unexpectedly'));
+          }
+        });
+
+        this.watchers.set(watchPath, watcher);
+        console.log(`[smartwatch] Started watching: ${watchPath}`);
+      }
+    } catch (error: any) {
+      console.error(`[smartwatch] Failed to watch path ${watchPath}:`, error);
+      this.safeEmit({ type: 'error', path: watchPath, error });
+    }
+  }
+
+  /**
+   * Handle raw fs.watch events - debounce and normalize them
+   */
+  private handleFsEvent(
+    basePath: string,
+    filename: string,
+    eventType: 'rename' | 'change' | string
+  ): void {
+    const fullPath = path.join(basePath, filename);
+
+    // Skip temporary files created by editors (atomic saves)
+    if (this.isTemporaryFile(fullPath)) {
+      return;
+    }
+
+    // Debounce: cancel any pending emit for this file
+    const existing = this.pendingEmits.get(fullPath);
+    if (existing) {
+      clearTimeout(existing);
+    }
+
+    // Schedule debounced emit
+    const timeout = setTimeout(() => {
+      this.pendingEmits.delete(fullPath);
+      this.emitFileEvent(fullPath, eventType);
+    }, this.options.debounceMs);
+
+    this.pendingEmits.set(fullPath, timeout);
+  }
+
+  /**
+   * Emit the actual file event after debounce
+   */
+  private async emitFileEvent(
+    fullPath: string,
+    eventType: 'rename' | 'change' | string
+  ): Promise<void> {
+    try {
+      const stats = await this.statSafe(fullPath);
+
+      if (eventType === 'rename') {
+        // 'rename' can mean add or unlink - check if file exists
+        if (stats) {
+          // File exists - it's either a new file or was renamed to this location
+          if (stats.isDirectory()) {
+            if (!this.watchedFiles.has(fullPath)) {
+              this.watchedFiles.add(fullPath);
+              this.safeEmit({ type: 'addDir', path: fullPath, stats });
+            }
+          } else {
+            const wasWatched = this.watchedFiles.has(fullPath);
+            this.watchedFiles.add(fullPath);
+            this.safeEmit({
+              type: wasWatched ? 'change' : 'add',
+              path: fullPath,
+              stats
+            });
+          }
+        } else {
+          // File doesn't exist - it was deleted
+          if (this.watchedFiles.has(fullPath)) {
+            const wasDir = this.isKnownDirectory(fullPath);
+            this.watchedFiles.delete(fullPath);
+            this.safeEmit({
+              type: wasDir ? 'unlinkDir' : 'unlink',
+              path: fullPath
+            });
+          }
+        }
+      } else if (eventType === 'change') {
+        // File was modified
+        if (stats && !stats.isDirectory()) {
+          const wasWatched = this.watchedFiles.has(fullPath);
+          if (!wasWatched) {
+            // This is actually an 'add' - file wasn't being watched before
+            this.watchedFiles.add(fullPath);
+            this.safeEmit({ type: 'add', path: fullPath, stats });
+          } else {
+            this.safeEmit({ type: 'change', path: fullPath, stats });
+          }
+        } else if (!stats && this.watchedFiles.has(fullPath)) {
+          // File was deleted
+          this.watchedFiles.delete(fullPath);
+          this.safeEmit({ type: 'unlink', path: fullPath });
+        }
+      }
+    } catch (error: any) {
+      this.safeEmit({ type: 'error', path: fullPath, error });
+    }
+  }
+
+  /**
+   * Scan directory and emit 'add' events for existing files
+   */
+  private async scanDirectory(dirPath: string, depth: number): Promise<void> {
+    if (depth > this.options.depth) {
+      return;
+    }
+
+    try {
+      const entries = await fs.promises.readdir(dirPath, { withFileTypes: true });
+
+      for (const entry of entries) {
+        const fullPath = path.join(dirPath, entry.name);
+
+        // Skip temp files during initial scan too
+        if (this.isTemporaryFile(fullPath)) {
+          continue;
+        }
+
+        const stats = await this.statSafe(fullPath);
+
+        if (!stats) {
+          continue;
+        }
+
+        if (entry.isDirectory()) {
+          this.watchedFiles.add(fullPath);
+          this.safeEmit({ type: 'addDir', path: fullPath, stats });
+          await this.scanDirectory(fullPath, depth + 1);
+        } else if (entry.isFile()) {
+          this.watchedFiles.add(fullPath);
+          this.safeEmit({ type: 'add', path: fullPath, stats });
+        }
+      }
+    } catch (error: any) {
+      if (error.code !== 'ENOENT' && error.code !== 'EACCES') {
+        this.safeEmit({ type: 'error', path: dirPath, error });
+      }
+    }
+  }
+
+  /**
+   * Safely stat a path, returning null if it doesn't exist
+   */
+  private async statSafe(filePath: string): Promise<fs.Stats | null> {
+    try {
+      return await (this.options.followSymlinks
+        ? fs.promises.stat(filePath)
+        : fs.promises.lstat(filePath));
+    } catch (error: any) {
+      // Only silently return null for expected "file doesn't exist" errors
+      if (error.code === 'ENOENT' || error.code === 'ENOTDIR') {
+        return null;
+      }
+      // Log other errors (permission, I/O) but still return null
+      console.warn(`[smartwatch] statSafe warning for ${filePath}: ${error.code} - ${error.message}`);
+      return null;
+    }
+  }
+
+  /**
+   * Check if a path was known to be a directory (for proper unlink event type)
+   */
+  private isKnownDirectory(filePath: string): boolean {
+    // Check if any watched files are children of this path
+    for (const watched of this.watchedFiles) {
+      if (watched.startsWith(filePath + path.sep)) {
+        return true;
+      }
+    }
+    return false;
+  }
+}