fix(devkit): ensurePackage should obey npmrc and yarnrc.yml

Fixes #16644

packages/devkit/nx.ts

@@ -1,7 +1,20 @@
-export function requireNx(): typeof import('nx/src/devkit-exports') {
+// After Nx v18, this can be removed and replaced with either:
+// - import {} from 'nx/src/devkit-exports'
+// - import {} from 'nx/src/devkit-internals'
+export function requireNx(): typeof import('nx/src/devkit-exports') &
+  Partial<typeof import('nx/src/devkit-internals')> {
   try {
-    return require('nx/src/devkit-exports');
+    let result = { ...require('nx/src/devkit-exports') };
+    try {
+      result = {
+        ...result,
+        // Remove in Nx v18, devkit should not support Nx v16.0.2 at that point.
+        ...require('nx/src/devkit-internals'),
+      };
+    } catch {}
+    return result;
   } catch {
+    // Remove in Nx V17, devkit should not support Nx < 16 at that point.
     return require('./nx-reexports-pre16');
   }
 }

packages/devkit/src/utils/package-json.ts

@@ -17,6 +17,7 @@ const {
   getPackageManagerCommand,
   workspaceRoot,
   detectPackageManager,
+  createTempNpmDirectory,
 } = requireNx();
 
 const UNIDENTIFIED_VERSION = 'UNIDENTIFIED_VERSION';
@@ -450,7 +451,9 @@ export function ensurePackage<T extends any = any>(
     );
   }
 
-  const tempDir = dirSync().name;
+  const { dir: tempDir } = createTempNpmDirectory?.() ?? {
+    dir: dirSync().name,
+  };
 
   console.log(`Fetching ${pkg}...`);
   const packageManager = detectPackageManager();

packages/nx/src/devkit-internals.ts

@@ -0,0 +1,6 @@
+/**
+ * Note to developers: STOP! These exports are available via requireNx in @nx/devkit.
+ *
+ * These may not be available in certain version of Nx, so be sure to check them first.
+ */
+export { createTempNpmDirectory } from './utils/package-manager';

packages/nx/src/utils/package-manager.ts

@@ -7,6 +7,7 @@ import { promisify } from 'util';
 import { writeJsonFile } from './fileutils';
 import { readModulePackageJson } from './package-json';
 import { gte, lt } from 'semver';
+import { workspaceRoot } from './workspace-root';
 
 const execAsync = promisify(exec);
 
@@ -118,16 +119,30 @@ export function getPackageManagerVersion(
  * Checks for a project level npmrc file by crawling up the file tree until
  * hitting a package.json file, as this is how npm finds them as well.
  */
-export function checkForNPMRC(
+export function findFileInPackageJsonDirectory(
+  file: string,
   directory: string = process.cwd()
 ): string | null {
   while (!existsSync(join(directory, 'package.json'))) {
     directory = dirname(directory);
   }
-  const path = join(directory, '.npmrc');
+  const path = join(directory, file);
   return existsSync(path) ? path : null;
 }
 
+export function copyPackageManagerConfigurationFiles(
+  root: string,
+  destination: string
+) {
+  for (const packageManagerConfigFile of ['.npmrc', '.yarnrc', '.yarnrc.yml']) {
+    const f = findFileInPackageJsonDirectory(packageManagerConfigFile, root);
+    if (f) {
+      // Copy config file if it exists, so that the package manager still follows it.
+      copyFileSync(f, `${destination}/.npmrc`);
+    }
+  }
+}
+
 /**
  * Creates a temporary directory where you can run package manager commands safely.
  *
@@ -140,11 +155,7 @@ export function createTempNpmDirectory() {
 
   // A package.json is needed for pnpm pack and for .npmrc to resolve
   writeJsonFile(`${dir}/package.json`, {});
-  const npmrc = checkForNPMRC();
-  if (npmrc) {
-    // Copy npmrc if it exists, so that npm still follows it.
-    copyFileSync(npmrc, `${dir}/.npmrc`);
-  }
+  copyPackageManagerConfigurationFiles(workspaceRoot, dir);
 
   const cleanup = async () => {
     try {