refactor(@angular/cli): add custom parser for bun pm ls

Bun does not support JSON output for the `pm ls` command. This commit introduces a custom parser to interpret Bun's tree-like output format, allowing the package manager abstraction to correctly discover installed dependencies when using Bun.

Author: clydin

packages/angular/cli/src/package-managers/package-manager-descriptor.ts

@@ -17,6 +17,7 @@ import { Logger } from './logger';
 import { PackageManifest, PackageMetadata } from './package-metadata';
 import { InstalledPackage } from './package-tree';
 import {
+  parseBunDependencies,
   parseNpmLikeDependencies,
   parseNpmLikeError,
   parseNpmLikeManifest,
@@ -261,10 +262,10 @@ export const SUPPORTED_PACKAGE_MANAGERS = {
     copyConfigFromProject: true,
     getRegistryOptions: (registry: string) => ({ args: ['--registry', registry] }),
     versionCommand: ['--version'],
-    listDependenciesCommand: ['pm', 'ls', '--json'],
+    listDependenciesCommand: ['pm', 'ls'],
     getManifestCommand: ['pm', 'view', '--json'],
     outputParsers: {
-      listDependencies: parseNpmLikeDependencies,
+      listDependencies: parseBunDependencies,
       getRegistryManifest: parseNpmLikeManifest,
       getRegistryMetadata: parseNpmLikeMetadata,
       getError: parseNpmLikeError,

packages/angular/cli/src/package-managers/parsers.ts

@@ -521,3 +521,57 @@ export function parseYarnClassicError(output: string, logger?: Logger): ErrorInf
 
   return null;
 }
+
+/**
+ * Parses the output of `bun pm ls`.
+ *
+ * Bun does not support JSON output for `pm ls`. The output is a tree structure:
+ * ```
+ * /path/to/project node_modules (1084)
+ * ├── @angular/[email protected]
+ * ├── rxjs @7.8.2
+ * └── zone.js @0.15.1
+ * ```
+ *
+ * @param stdout The standard output of the command.
+ * @param logger An optional logger instance.
+ * @returns A map of package names to their installed package details.
+ */
+export function parseBunDependencies(
+  stdout: string,
+  logger?: Logger,
+): Map<string, InstalledPackage> {
+  logger?.debug('Parsing Bun dependency list...');
+  logStdout(stdout, logger);
+
+  const dependencies = new Map<string, InstalledPackage>();
+  if (!stdout) {
+    return dependencies;
+  }
+
+  const lines = stdout.split('\n');
+  // Skip the first line (project info)
+  for (let i = 1; i < lines.length; i++) {
+    const line = lines[i].trim();
+    if (!line) {
+      continue;
+    }
+
+    // Remove tree structure characters
+    const cleanLine = line.replace(/^[└├]──\s*/, '');
+
+    // Parse name and version
+    // Scoped: @angular/[email protected]
+    // Unscoped: rxjs @7.8.2
+    const match = cleanLine.match(/^(.+?)\s?@([^@\s]+)$/);
+    if (match) {
+      const name = match[1];
+      const version = match[2];
+      dependencies.set(name, { name, version });
+    }
+  }
+
+  logger?.debug(`  Found ${dependencies.size} dependencies.`);
+
+  return dependencies;
+}

packages/angular/cli/src/package-managers/parsers_spec.ts

@@ -6,7 +6,12 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import { parseNpmLikeError, parseNpmLikeManifest, parseYarnClassicError } from './parsers';
+import {
+  parseBunDependencies,
+  parseNpmLikeError,
+  parseNpmLikeManifest,
+  parseYarnClassicError,
+} from './parsers';
 
 describe('parsers', () => {
   describe('parseNpmLikeError', () => {
@@ -128,4 +133,41 @@ describe('parsers', () => {
       expect(error).toBeNull();
     });
   });
+
+  describe('parseBunDependencies', () => {
+    it('should parse bun pm ls output', () => {
+      const stdout = `
+/tmp/angular-cli-e2e-PiL5n3/e2e-test/assets/19.0-project-1767113081927 node_modules (1084)
+├── @angular-devkit/[email protected]
+├── @angular/[email protected]
+├── jasmine-core @5.6.0
+├── rxjs @7.8.2
+└── zone.js @0.15.1
+`.trim();
+
+      const deps = parseBunDependencies(stdout);
+      expect(deps.size).toBe(5);
+      expect(deps.get('@angular-devkit/build-angular')).toEqual({
+        name: '@angular-devkit/build-angular',
+        version: '20.3.13',
+      });
+      expect(deps.get('@angular/cli')).toEqual({ name: '@angular/cli', version: '20.3.13' });
+      expect(deps.get('jasmine-core')).toEqual({ name: 'jasmine-core', version: '5.6.0' });
+      expect(deps.get('rxjs')).toEqual({ name: 'rxjs', version: '7.8.2' });
+      expect(deps.get('zone.js')).toEqual({ name: 'zone.js', version: '0.15.1' });
+    });
+
+    it('should return empty map for empty stdout', () => {
+      expect(parseBunDependencies('').size).toBe(0);
+    });
+
+    it('should skip lines that do not match the pattern', () => {
+      const stdout = `
+project node_modules
+├── invalid-line
+└── another-invalid
+`.trim();
+      expect(parseBunDependencies(stdout).size).toBe(0);
+    });
+  });
 });