feat(heft-storybook-plugin): add disableTelemetry option; always set COREPACK_ENABLE_AUTO_PIN=0

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>

Author: Copilot

common/changes/@rushstack/heft-storybook-plugin/copilot-update-heft-storybook-plugin_2026-03-12-02-22.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/heft-storybook-plugin",
+      "comment": "Add `disableTelemetry` option to set STORYBOOK_DISABLE_TELEMETRY=1 when invoking Storybook; always set COREPACK_ENABLE_AUTO_PIN=0 in the subprocess environment",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@rushstack/heft-storybook-plugin"
+}

heft-plugins/heft-storybook-plugin/src/StorybookPlugin.ts

@@ -158,6 +158,12 @@ export interface IStorybookPluginOptions {
    * Specifies whether to capture the webpack stats for the storybook build by adding the `--webpack-stats-json` CLI flag.
    */
   captureWebpackStats?: boolean;
+
+  /**
+   * If true, sets the `STORYBOOK_DISABLE_TELEMETRY=1` environment variable when invoking the Storybook subprocess,
+   * which disables Storybook's telemetry data collection.
+   */
+  disableTelemetry?: boolean;
 }
 
 interface IRunStorybookOptions extends IPrepareStorybookOptions {
@@ -499,17 +505,27 @@ export default class StorybookPlugin implements IHeftTaskPlugin<IStorybookPlugin
       storybookArgs.push('--docs');
     }
 
+    const storybookEnv: NodeJS.ProcessEnv = {
+      ...process.env,
+      // Prevent corepack from prompting to pin a package manager version
+      COREPACK_ENABLE_AUTO_PIN: '0'
+    };
+    if (options.disableTelemetry) {
+      storybookEnv.STORYBOOK_DISABLE_TELEMETRY = '1';
+    }
+
     if (isServeMode) {
       // Instantiate storybook runner synchronously for incremental builds
       // this ensure that the process is not killed when heft watcher detects file changes
       this._invokeSync(
         logger,
         resolvedModulePath,
         storybookArgs,
+        storybookEnv,
         storybookCliVersion === StorybookCliVersion.STORYBOOK8
       );
     } else {
-      await this._invokeAsSubprocessAsync(logger, resolvedModulePath, storybookArgs, workingDirectory);
+      await this._invokeAsSubprocessAsync(logger, resolvedModulePath, storybookArgs, workingDirectory, storybookEnv);
     }
   }
 
@@ -524,15 +540,15 @@ export default class StorybookPlugin implements IHeftTaskPlugin<IStorybookPlugin
     logger: IScopedLogger,
     command: string,
     args: string[],
-    cwd: string
+    cwd: string,
+    env: NodeJS.ProcessEnv
   ): Promise<void> {
     return await new Promise<void>((resolve, reject) => {
-      const storybookEnv: NodeJS.ProcessEnv = { ...process.env };
       const forkedProcess: child_process.ChildProcess = child_process.fork(command, args, {
         execArgv: process.execArgv,
         cwd,
         stdio: ['ignore', 'pipe', 'pipe', 'ipc'],
-        env: storybookEnv,
+        env,
         ...SubprocessTerminator.RECOMMENDED_OPTIONS
       });
 
@@ -587,6 +603,7 @@ export default class StorybookPlugin implements IHeftTaskPlugin<IStorybookPlugin
     logger: IScopedLogger,
     command: string,
     args: string[],
+    env: NodeJS.ProcessEnv,
     patchNpmConfigUserAgent: boolean
   ): void {
     logger.terminal.writeLine('Launching ' + command);
@@ -608,6 +625,13 @@ export default class StorybookPlugin implements IHeftTaskPlugin<IStorybookPlugin
       process.env.npm_config_user_agent = 'npm';
     }
 
+    // Apply custom environment variables
+    for (const [key, value] of Object.entries(env)) {
+      if (value !== undefined) {
+        process.env[key] = value;
+      }
+    }
+
     // invoke command synchronously
     require(command);
 

heft-plugins/heft-storybook-plugin/src/schemas/storybook.schema.json

@@ -37,6 +37,11 @@
       "title": "Specifies whether to capture the webpack stats for storybook build.",
       "description": "If this is true, then it will capture the webpack stats for storybook build. Defaults to false.",
       "type": "boolean"
+    },
+    "disableTelemetry": {
+      "title": "Specifies whether to disable Storybook telemetry.",
+      "description": "If true, sets the STORYBOOK_DISABLE_TELEMETRY=1 environment variable when invoking the Storybook subprocess, which disables Storybook's telemetry data collection. Defaults to false.",
+      "type": "boolean"
     }
   }
 }