feat(ng-dev): create tool for automatically discovering and updating generated files

ng-dev/misc/cli.ts

@@ -10,6 +10,7 @@ import {Argv} from 'yargs';
 import {BuildAndLinkCommandModule} from './build-and-link/cli.js';
 import {UpdateYarnCommandModule} from './update-yarn/cli.js';
 import {ValidateLicensesModule} from './validate-licenses/cli.js';
+import {GeneratedFilesModule} from './generated-files/cli.js';
 
 /** Build the parser for the misc commands. */
 export function buildMiscParser(localYargs: Argv) {
@@ -18,5 +19,6 @@ export function buildMiscParser(localYargs: Argv) {
     .strict()
     .command(BuildAndLinkCommandModule)
     .command(UpdateYarnCommandModule)
-    .command(ValidateLicensesModule);
+    .command(ValidateLicensesModule)
+    .command(GeneratedFilesModule);
 }

ng-dev/misc/generated-files/cli.ts

@@ -0,0 +1,25 @@
+/**
+ * @license
+ * Copyright Google LLC
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {Argv, CommandModule} from 'yargs';
+import {updateGeneratedFileTargets} from './update-generated-files.js';
+
+async function builder(argv: Argv) {
+  return argv;
+}
+async function handler() {
+  await updateGeneratedFileTargets();
+}
+
+/** CLI command module. */
+export const GeneratedFilesModule: CommandModule = {
+  builder,
+  handler,
+  command: 'update-generated-files',
+  describe: 'Automatically discover all bazel generated file targets and update them.',
+};

ng-dev/misc/generated-files/update-generated-files.ts

@@ -0,0 +1,48 @@
+/**
+ * @license
+ * Copyright Google LLC
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {ChildProcess} from '../../utils/child-process.js';
+import {Spinner} from '../../utils/spinner.js';
+import {getBazelBin} from '../../utils/bazel-bin.js';
+import {green, Log} from '../../utils/logging.js';
+
+export async function updateGeneratedFileTargets(): Promise<void> {
+  const spinner = new Spinner('Querying for all generated file targets');
+
+  // Query for all of the generated file targets
+  const result = await ChildProcess.spawn(
+    getBazelBin(),
+    ['query', `"kind(nodejs_binary, //...) intersect attr(name, '.update$', //...)"`],
+    {mode: 'silent'},
+  );
+
+  if (result.status !== 0) {
+    spinner.complete();
+    throw Error(`Unexpected error: ${result.stderr}`);
+  }
+
+  const targets = result.stdout.trim().split(/\r?\n/);
+  spinner.update(`Found ${targets.length} generated file targets to update`);
+
+  // Build all of the generated file targets in parallel.
+  await ChildProcess.spawn(getBazelBin(), ['build', targets.join(' ')], {mode: 'silent'});
+
+  // Individually run the generated file update targets.
+  for (let idx = 0; idx < targets.length; idx++) {
+    const target = targets[idx];
+    spinner.update(`${idx + 1} of ${targets.length} updates completed`);
+    const updateResult = await ChildProcess.spawn(getBazelBin(), ['run', target], {mode: 'silent'});
+    if (updateResult.status !== 0) {
+      spinner.complete();
+      throw Error(`Unexpected error while updating: ${target}.`);
+    }
+  }
+
+  spinner.complete();
+  Log.info(` ${green('✔')}  Updated all generated files (${targets.length} targets)`);
+}

ng-dev/utils/bazel-bin.ts

@@ -0,0 +1,20 @@
+/**
+ * @license
+ * Copyright Google LLC
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {join} from 'path';
+import {determineRepoBaseDirFromCwd} from './repo-directory.js';
+
+let BAZEL_BIN: undefined | string = undefined;
+
+export function getBazelBin() {
+  if (BAZEL_BIN === undefined) {
+    BAZEL_BIN = process.env.BAZEL || join(determineRepoBaseDirFromCwd(), 'node_modules/.bin/bazel');
+  }
+
+  return BAZEL_BIN;
+}

package.json

@@ -7,7 +7,7 @@
     "ng-dev": "bash ./tools/local-dev.sh",
     "lint": "yarn tslint -c tslint.json --project tsconfig.json",
     "build-env-stamp": "tsx --tsconfig tsconfig.json ./ng-dev/release/stamping/_private_main.ts build-env-stamp",
-    "update-generated-files": "tsx --tsconfig tsconfig.json ./tools/update-generated-files.ts",
+    "update-generated-files": "yarn ng-dev misc update-generated-files",
     "pack": "bazel run //:npm_package.pack --config=release"
   },
   "exports": {