chore: import upstream snapshot with attribution

packages/angular-rspack/test-utils/nx-devkit-internal-mock.ts

@@ -0,0 +1,16 @@
+// Mock for `@nx/devkit/internal`. Mirrors the `@nx/devkit` mock pattern: only
+// the symbols the plugin code imports are provided, and behavior is the
+// minimum each test path needs.
+//
+// `assertSupportedInstalledPackageVersion` is a no-op here because no current
+// test exercises the runtime floor guard. In production, the helper would
+// read the installed version via `getInstalledPackageVersion` and throw when
+// below floor; making the mock a no-op lets tests transitively load the
+// guard without depending on a built devkit/nx dist.
+
+export function assertSupportedInstalledPackageVersion(
+  _packageName: string,
+  _minSupportedVersion: string
+): void {
+  /* no-op */
+}

packages/angular-rspack/test-utils/nx-devkit-mock.ts

@@ -0,0 +1,47 @@
+import * as path from 'path';
+import { PathLike, statSync } from 'node:fs';
+export function fileExists(path: PathLike): boolean {
+  try {
+    return statSync(path).isFile();
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * The root of the workspace
+ */
+export let workspaceRoot = workspaceRootInner(process.cwd(), process.cwd());
+
+// Required for integration tests in projects which depend on Nx at runtime, such as lerna and angular-eslint
+export function setWorkspaceRoot(root: string): void {
+  workspaceRoot = root;
+}
+
+export function workspaceRootInner(
+  dir: string,
+  candidateRoot: string | null
+): string {
+  if (process.env.NX_WORKSPACE_ROOT_PATH)
+    return process.env.NX_WORKSPACE_ROOT_PATH;
+  if (path.dirname(dir) === dir) return candidateRoot;
+
+  const matches = [
+    path.join(dir, 'nx.json'),
+    path.join(dir, 'nx'),
+    path.join(dir, 'nx.bat'),
+  ];
+
+  if (matches.some((x) => fileExists(x))) {
+    return dir;
+
+    // This handles the case where we have a workspace which uses npm / yarn / pnpm
+    // workspaces, and has a project which contains Nx in its dependency tree.
+    // e.g. packages/my-lib/package.json contains @nx/devkit, which references Nx and is
+    // thus located in //packages/my-lib/node_modules/nx/package.json
+  } else if (fileExists(path.join(dir, 'node_modules', 'nx', 'package.json'))) {
+    return workspaceRootInner(path.dirname(dir), dir);
+  } else {
+    return workspaceRootInner(path.dirname(dir), candidateRoot);
+  }
+}