feat(watch mode): Add watch mode support with CLI options and enhanced documentation

ts/tstest.classes.tstest.ts

@@ -101,6 +101,77 @@ export class TsTest {
     tapCombinator.evaluate();
   }
   
+  public async runWatch(ignorePatterns: string[] = []) {
+    const smartchokInstance = new plugins.smartchok.Smartchok([this.testDir.cwd]);
+    
+    console.clear();
+    this.logger.watchModeStart();
+    
+    // Initial run
+    await this.run();
+    
+    // Set up file watcher
+    const fileChanges = new Map<string, NodeJS.Timeout>();
+    const debounceTime = 300; // 300ms debounce
+    
+    const runTestsAfterChange = async () => {
+      console.clear();
+      const changedFiles = Array.from(fileChanges.keys());
+      fileChanges.clear();
+      
+      this.logger.watchModeRerun(changedFiles);
+      await this.run();
+      this.logger.watchModeWaiting();
+    };
+    
+    // Start watching before subscribing to events
+    await smartchokInstance.start();
+    
+    // Subscribe to file change events
+    const changeObservable = await smartchokInstance.getObservableFor('change');
+    const addObservable = await smartchokInstance.getObservableFor('add');
+    const unlinkObservable = await smartchokInstance.getObservableFor('unlink');
+    
+    const handleFileChange = (changedPath: string) => {
+      // Skip if path matches ignore patterns
+      if (ignorePatterns.some(pattern => changedPath.includes(pattern))) {
+        return;
+      }
+      
+      // Clear existing timeout for this file if any
+      if (fileChanges.has(changedPath)) {
+        clearTimeout(fileChanges.get(changedPath));
+      }
+      
+      // Set new timeout for this file
+      const timeout = setTimeout(() => {
+        fileChanges.delete(changedPath);
+        if (fileChanges.size === 0) {
+          runTestsAfterChange();
+        }
+      }, debounceTime);
+      
+      fileChanges.set(changedPath, timeout);
+    };
+    
+    // Subscribe to all relevant events
+    changeObservable.subscribe(([path]) => handleFileChange(path));
+    addObservable.subscribe(([path]) => handleFileChange(path));
+    unlinkObservable.subscribe(([path]) => handleFileChange(path));
+    
+    this.logger.watchModeWaiting();
+    
+    // Handle Ctrl+C to exit gracefully
+    process.on('SIGINT', async () => {
+      this.logger.watchModeStop();
+      await smartchokInstance.stop();
+      process.exit(0);
+    });
+    
+    // Keep the process running
+    await new Promise(() => {}); // This promise never resolves
+  }
+  
   private async runSingleTestOrSkip(fileNameArg: string, fileIndex: number, totalFiles: number, tapCombinator: TapCombinator) {
     // Check if this file should be skipped based on range
     if (this.startFromFile !== null && fileIndex < this.startFromFile) {