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<h1><a href="index.html">All files</a> file-watcher.ts</h1>
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<span class="strong">0% </span>
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<span class='fraction'>0/139</span>
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<span class="strong">0% </span>
<span class="quiet">Branches</span>
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<span class="strong">0% </span>
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<span class='fraction'>0/1</span>
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<span class="strong">0% </span>
<span class="quiet">Lines</span>
<span class='fraction'>0/139</span>
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<pre><table class="coverage">
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<span class="cline-any cline-no"> </span></td><td class="text"><pre class="prettyprint lang-js"><span class="cstat-no" title="statement not covered" >import * as chokidar from 'chokidar';<span class="fstat-no" title="function not covered" ><span class="branch-0 cbranch-no" title="branch not covered" ></span></span></span>
<span class="cstat-no" title="statement not covered" >import * as path from 'path';</span>
import { FileWatchingConfig } from './types.js';
<span class="cstat-no" title="statement not covered" >import { getConfig, getProjectRoot } from './global-state.js';</span>
<span class="cstat-no" title="statement not covered" >import { normalizePath } from './file-utils.js';</span>
/**
* Types of file events that the watcher can emit
*/
export type FileEventType = 'add' | 'change' | 'unlink';
/**
* Callback function type for file events
*/
export type FileEventCallback = (filePath: string, eventType: FileEventType) => void;
/**
* File watcher class that monitors file system changes
*/
<span class="cstat-no" title="statement not covered" >export class FileWatcher {</span>
<span class="cstat-no" title="statement not covered" > private watcher: chokidar.FSWatcher | null = null;</span>
private config: FileWatchingConfig;
private baseDir: string;
<span class="cstat-no" title="statement not covered" > private isWatching: boolean = false;</span>
<span class="cstat-no" title="statement not covered" > private eventCallbacks: FileEventCallback[] = [];</span>
<span class="cstat-no" title="statement not covered" > private throttleTimers: Map<string, NodeJS.Timeout> = new Map();</span>
<span class="cstat-no" title="statement not covered" > private errorCount: number = 0;</span>
/**
* Create a new FileWatcher instance
* @param config The file watching configuration
* @param baseDir The base directory to watch
*/
<span class="cstat-no" title="statement not covered" > constructor(config: FileWatchingConfig, baseDir: string) {</span>
<span class="cstat-no" title="statement not covered" > this.config = config;</span>
<span class="cstat-no" title="statement not covered" > this.baseDir = path.normalize(baseDir);</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Initialized with base directory: ${this.baseDir}`);</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Start watching for file changes
*/
<span class="cstat-no" title="statement not covered" > public start(): void {</span>
<span class="cstat-no" title="statement not covered" > if (this.isWatching) {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Already running');</span>
<span class="cstat-no" title="statement not covered" > return;</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > const watchOptions: chokidar.WatchOptions = {</span>
<span class="cstat-no" title="statement not covered" > ignored: this.getIgnoredPatterns(),</span>
<span class="cstat-no" title="statement not covered" > ignoreInitial: true,</span>
<span class="cstat-no" title="statement not covered" > persistent: true,</span>
<span class="cstat-no" title="statement not covered" > awaitWriteFinish: {</span>
<span class="cstat-no" title="statement not covered" > stabilityThreshold: 300,</span>
<span class="cstat-no" title="statement not covered" > pollInterval: 100</span>
<span class="cstat-no" title="statement not covered" > },</span>
<span class="cstat-no" title="statement not covered" > ignorePermissionErrors: true,</span>
<span class="cstat-no" title="statement not covered" > depth: 99, // Maximum depth for directory traversal</span>
<span class="cstat-no" title="statement not covered" > disableGlobbing: false,</span>
<span class="cstat-no" title="statement not covered" > followSymlinks: false</span>
<span class="cstat-no" title="statement not covered" > };</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Starting on ${this.baseDir}`);</span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > this.watcher = chokidar.watch(this.baseDir, watchOptions);</span>
// Setup event handlers if watching is enabled for those events
<span class="cstat-no" title="statement not covered" > if (this.config.watchForNewFiles) {</span>
<span class="cstat-no" title="statement not covered" > this.watcher.on('add', (filePath) => this.onFileEvent(filePath, 'add'));</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > if (this.config.watchForChanged) {</span>
<span class="cstat-no" title="statement not covered" > this.watcher.on('change', (filePath) => this.onFileEvent(filePath, 'change'));</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > if (this.config.watchForDeleted) {</span>
<span class="cstat-no" title="statement not covered" > this.watcher.on('unlink', (filePath) => this.onFileEvent(filePath, 'unlink'));</span>
<span class="cstat-no" title="statement not covered" > }</span>
// Handle errors
<span class="cstat-no" title="statement not covered" > this.watcher.on('error', (error) => {</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Error:`, error);</span>
<span class="cstat-no" title="statement not covered" > this.errorCount++;</span>
// If too many errors, try restarting the watcher
<span class="cstat-no" title="statement not covered" > if (this.errorCount > 10) {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Too many errors, restarting...');</span>
<span class="cstat-no" title="statement not covered" > this.restart();</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > });</span>
// Setup ready event
<span class="cstat-no" title="statement not covered" > this.watcher.on('ready', () => {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Initial scan complete. Ready for changes.');</span>
<span class="cstat-no" title="statement not covered" > });</span>
<span class="cstat-no" title="statement not covered" > this.isWatching = true;</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Started successfully');</span>
<span class="cstat-no" title="statement not covered" > } catch (error) {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Error starting:', error);</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Stop watching for file changes
*/
<span class="cstat-no" title="statement not covered" > public stop(): void {</span>
<span class="cstat-no" title="statement not covered" > if (!this.isWatching || !this.watcher) {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Not running');</span>
<span class="cstat-no" title="statement not covered" > return;</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Stopping...');</span>
// Clear all throttle timers
<span class="cstat-no" title="statement not covered" > this.throttleTimers.forEach(timer => clearTimeout(timer));</span>
<span class="cstat-no" title="statement not covered" > this.throttleTimers.clear();</span>
// Close the watcher
<span class="cstat-no" title="statement not covered" > this.watcher.close()</span>
<span class="cstat-no" title="statement not covered" > .then(() => {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Stopped successfully');</span>
<span class="cstat-no" title="statement not covered" > })</span>
<span class="cstat-no" title="statement not covered" > .catch(error => {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Error stopping:', error);</span>
<span class="cstat-no" title="statement not covered" > })</span>
<span class="cstat-no" title="statement not covered" > .finally(() => {</span>
<span class="cstat-no" title="statement not covered" > this.watcher = null;</span>
<span class="cstat-no" title="statement not covered" > this.isWatching = false;</span>
<span class="cstat-no" title="statement not covered" > this.errorCount = 0;</span>
<span class="cstat-no" title="statement not covered" > });</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Restart the file watcher
*/
<span class="cstat-no" title="statement not covered" > public restart(): void {</span>
<span class="cstat-no" title="statement not covered" > console.error('FileWatcher: Restarting...');</span>
<span class="cstat-no" title="statement not covered" > this.stop();</span>
<span class="cstat-no" title="statement not covered" > setTimeout(() => {</span>
<span class="cstat-no" title="statement not covered" > if (!this.isWatching) {</span>
<span class="cstat-no" title="statement not covered" > this.start();</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > }, 1000); // Delay restart to avoid immediate errors</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Register a callback for file events
* @param callback The callback function to call when a file event occurs
*/
<span class="cstat-no" title="statement not covered" > public addEventCallback(callback: FileEventCallback): void {</span>
<span class="cstat-no" title="statement not covered" > this.eventCallbacks.push(callback);</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Added event callback. Total callbacks: ${this.eventCallbacks.length}`);</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Remove a previously registered callback
* @param callback The callback function to remove
*/
<span class="cstat-no" title="statement not covered" > public removeCallback(callback: FileEventCallback): void {</span>
<span class="cstat-no" title="statement not covered" > const index = this.eventCallbacks.indexOf(callback);</span>
<span class="cstat-no" title="statement not covered" > if (index !== -1) {</span>
<span class="cstat-no" title="statement not covered" > this.eventCallbacks.splice(index, 1);</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Removed event callback. Total callbacks: ${this.eventCallbacks.length}`);</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Get patterns to ignore based on config
* @returns Array of patterns to ignore
*/
<span class="cstat-no" title="statement not covered" > private getIgnoredPatterns(): (string | RegExp)[] {</span>
<span class="cstat-no" title="statement not covered" > const patterns: (string | RegExp)[] = [];</span>
// Add patterns from excludePatterns in config
<span class="cstat-no" title="statement not covered" > const config = getConfig();</span>
<span class="cstat-no" title="statement not covered" > if (config?.excludePatterns) {</span>
<span class="cstat-no" title="statement not covered" > patterns.push(...config.excludePatterns);</span>
<span class="cstat-no" title="statement not covered" > }</span>
// Add dot files if configured
<span class="cstat-no" title="statement not covered" > if (this.config.ignoreDotFiles) {</span>
<span class="cstat-no" title="statement not covered" > patterns.push(/(^|[\/\\])\../); // Matches all paths starting with a dot</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Ignoring ${patterns.length} patterns:`, patterns.slice(0, 5));</span>
<span class="cstat-no" title="statement not covered" > return patterns;</span>
<span class="cstat-no" title="statement not covered" > }</span>
/**
* Handle a file event
* @param filePath The path of the file that changed
* @param eventType The type of event
*/
<span class="cstat-no" title="statement not covered" > private onFileEvent(filePath: string, eventType: FileEventType): void {</span>
// Get relative path for logging
<span class="cstat-no" title="statement not covered" > const relativePath = path.relative(this.baseDir, filePath);</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Event: ${eventType} - ${relativePath}`);</span>
// Log the ignored patterns
<span class="cstat-no" title="statement not covered" > const ignoredPatterns = this.getIgnoredPatterns();</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Ignored patterns:`, ignoredPatterns);</span>
// Check if the file should be ignored
<span class="cstat-no" title="statement not covered" > const shouldIgnore = ignoredPatterns.some(pattern => {</span>
<span class="cstat-no" title="statement not covered" > const regex = typeof pattern === 'string' ? new RegExp(pattern) : pattern;</span>
<span class="cstat-no" title="statement not covered" > return regex.test(relativePath);</span>
<span class="cstat-no" title="statement not covered" > });</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Should ignore ${relativePath}? ${shouldIgnore ? 'YES' : 'NO'}`);</span>
<span class="cstat-no" title="statement not covered" > if (shouldIgnore) {</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Ignoring event for ${relativePath}`);</span>
<span class="cstat-no" title="statement not covered" > return;</span>
<span class="cstat-no" title="statement not covered" > }</span>
// Notify all registered callbacks of a file event
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Notifying ${this.eventCallbacks.length} callbacks for ${eventType} event on ${filePath}`);</span>
<span class="cstat-no" title="statement not covered" > this.eventCallbacks.forEach(callback => {</span>
<span class="cstat-no" title="statement not covered" > try {</span>
// Pass normalized path to callback
<span class="cstat-no" title="statement not covered" > callback(normalizePath(filePath), eventType); </span>
<span class="cstat-no" title="statement not covered" > } catch (error) {</span>
<span class="cstat-no" title="statement not covered" > console.error(`FileWatcher: Error in callback:`, error);</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > });</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" >} </span></pre></td></tr></table></pre>
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