fix(rush): Allow 'rush-pnpm' to forward arbitrary commands

Author: aryanjsingh

apps/rush/src/cli/actions/PnpmAction.ts

@@ -0,0 +1,55 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+import { RUSH_PNPM_SCRIPT_NAME } from '../../logic/pnpm/PnpmProjectDependencyManifest';
+import { BaseRushAction } from './BaseRushAction';
+import { RushCommandLineParser } from '../RushCommandLineParser';
+import { PnpmInstallManager } from '../../logic/pnpm/PnpmInstallManager';
+import { RushConfiguration } from '../../api/RushConfiguration';
+import { Utilities } from '../../utilities/Utilities';
+
+export class PnpmAction extends BaseRushAction {
+  public constructor(
+    protected rushConfiguration: RushConfiguration | undefined,
+    parser?: RushCommandLineParser
+  ) {
+    super({
+      actionName: RUSH_PNPM_SCRIPT_NAME,
+      summary:
+        'When rush is configured to use pnpm, this command is a wrapper for "pnpm".' +
+        ' It will always use the version of pnpm that is specified in your rush.json file.' +
+        ' Any command-line parameters will be passed through to the underlying "pnpm" executable.',
+      documentation:
+        'When rush is configured to use pnpm, this command is a wrapper for "pnpm".' +
+        ' It will always use the version of pnpm that is specified in your rush.json file.' +
+        ' Any command-line parameters will be passed through to the underlying "pnpm" executable.' +
+        ' If you want to use a global pnpm installation instead, you can add a "pnpm" entry to the' +
+        ' "preferredVersions" setting in your command-path.json file.',
+      safeForSimultaneousRushProcesses: true,
+      parser: parser,
+      default: true
+    });
+  }
+
+  public onDefineParameters(): void {
+    // No parameters are defined because this action passes all parameters to the pnpm executable
+  }
+
+  public async run(): Promise<void> {
+    if (!this.rushConfiguration) {
+      // This should be impossible, but might as well check
+      throw new Error('The "rush-pnpm" command must be run inside a Rush repository.');
+    }
+
+    const pnpmInstallManager: PnpmInstallManager = this.rushConfiguration.packageManagerTool as PnpmInstallManager;
+
+    const pnpmArgs: string[] = this.parser.remainder.raw.slice();
+
+    Utilities.executeCommand({
+      command: pnpmInstallManager.pnpmPath,
+      args: pnpmArgs,
+      workingDirectory: this.rushConfiguration.commonTempFolder,
+      allowConsoleOutput: true
+    });
+  }
+}