fix(TsCompiler): Clear output directories before compilation to ensure clean builds and avoid stale files

changelog.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 2025-12-14 - 4.0.2 - fix(TsCompiler)
+Clear output directories before compilation to ensure clean builds and avoid stale files
+
+- TsCompiler.compileGlob now clears the destination directory (if it exists) before compiling each glob pattern.
+- Clearing is logged unless --quiet or --json flags are set (e.g. "🧹 Clearing output directory: <dest>").
+- Uses FsHelpers.removeDirectory to remove previous output, preventing stale or duplicate emitted files.
+- Documentation (readme.md) updated to advertise automatic output directory management / clean builds.
+- Removed stale compiled test artifacts from test/assets/output to avoid interference with tests.
+
 ## 2025-12-13 - 3.1.3 - fix(npmextra)
 Align npmextra.json package name with package.json (@git.zone/tsbuild)
 

test/assets/output/tocompile.d.ts

@@ -1 +0,0 @@
-export {};

test/assets/output/tocompile.js

@@ -1,17 +0,0 @@
-console.log('test');
-console.log('test2');
-import * as early from '@push.rocks/early';
-early.start();
-early.stop();
-import { anExportedString } from './tocompile2.js';
-console.log(anExportedString);
-class test2 {
-    test = [];
-    constructor() {
-        console.log('hi');
-    }
-}
-const run = async () => {
-    return 'hi';
-};
-//# sourceMappingURL=data:application/json;base64,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

test/assets/output/tocompile2.d.ts

@@ -1 +0,0 @@
-export declare const anExportedString = "exported string";

test/assets/output/tocompile2.js

@@ -1,3 +0,0 @@
-console.log('hello');
-export const anExportedString = 'exported string';
-//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoidG9jb21waWxlMi5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbIi4uL3RvY29tcGlsZTIudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsT0FBTyxDQUFDLEdBQUcsQ0FBQyxPQUFPLENBQUMsQ0FBQztBQUNyQixNQUFNLENBQUMsTUFBTSxnQkFBZ0IsR0FBRyxpQkFBaUIsQ0FBQyJ9

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@git.zone/tsbuild',
-  version: '3.1.3',
+  version: '4.0.2',
   description: 'A tool for compiling TypeScript files using the latest nightly features, offering flexible APIs and a CLI for streamlined development.'
 }

ts/mod_compiler/classes.tscompiler.ts

@@ -335,6 +335,14 @@ export class TsCompiler {
       // Get destination directory as absolute path
       const destDir = smartpath.transform.toAbsolute(destPath, this.cwd) as string;
 
+      // Clear the destination directory before compilation if it exists
+      if (await FsHelpers.directoryExists(destDir)) {
+        if (!isQuiet && !isJson) {
+          console.log(`🧹 Clearing output directory: ${destPath}`);
+        }
+        await FsHelpers.removeDirectory(destDir);
+      }
+
       // Update compiler options with the output directory
       const options: CompilerOptions = {
         ...customOptions,