refactor: remove dead registry and pipeline modules

src/dead-architecture-cleanup.test.ts

@@ -0,0 +1,70 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
+
+const DEAD_MODULE_PATHS = [
+  'src/translators/index.ts',
+  'src/subsync/engines.ts',
+  'src/subtitle/pipeline.ts',
+  'src/subtitle/stages/merge.ts',
+  'src/subtitle/stages/normalize.ts',
+  'src/subtitle/stages/normalize.test.ts',
+  'src/subtitle/stages/tokenize.ts',
+  'src/tokenizers/index.ts',
+  'src/token-mergers/index.ts',
+] as const;
+
+const FORBIDDEN_IMPORT_PATTERNS = [
+  /from ['"]\.\.?\/tokenizers['"]/,
+  /from ['"]\.\.?\/token-mergers['"]/,
+  /from ['"]\.\.?\/subtitle\/pipeline['"]/,
+  /from ['"]\.\.?\/subsync\/engines['"]/,
+  /from ['"]\.\.?\/translators['"]/,
+] as const;
+
+function readWorkspaceFile(relativePath: string): string {
+  return fs.readFileSync(path.join(process.cwd(), relativePath), 'utf8');
+}
+
+function collectSourceFiles(rootDir: string): string[] {
+  const absoluteRoot = path.join(process.cwd(), rootDir);
+  const out: string[] = [];
+
+  const visit = (currentDir: string) => {
+    for (const entry of fs.readdirSync(currentDir, { withFileTypes: true })) {
+      const fullPath = path.join(currentDir, entry.name);
+      if (entry.isDirectory()) {
+        visit(fullPath);
+        continue;
+      }
+      if (!fullPath.endsWith('.ts') && !fullPath.endsWith('.tsx')) {
+        continue;
+      }
+      out.push(path.relative(process.cwd(), fullPath).replaceAll('\\', '/'));
+    }
+  };
+
+  visit(absoluteRoot);
+  out.sort();
+  return out;
+}
+
+test('dead registry and pipeline modules stay removed from the repository', () => {
+  for (const relativePath of DEAD_MODULE_PATHS) {
+    assert.equal(
+      fs.existsSync(path.join(process.cwd(), relativePath)),
+      false,
+      `${relativePath} should stay deleted`,
+    );
+  }
+});
+
+test('live source tree no longer imports dead registry and pipeline modules', () => {
+  for (const relativePath of collectSourceFiles('src')) {
+    const source = readWorkspaceFile(relativePath);
+    for (const pattern of FORBIDDEN_IMPORT_PATTERNS) {
+      assert.doesNotMatch(source, pattern, `${relativePath} should not import ${pattern.source}`);
+    }
+  }
+});