build: move build scripts to dedicated directory (#35780)

This commit moves the build-related scripts
(`build-ivy-npm-packages.js`, `build-packages-dist.js` and
`package-builder.js`) to a dedicated directory to keep the `scripts/`
directory cleaner.

It also moves the logic for building the `zone.js` package to a separate
script, `zone-js-builder.js`, to make it re-usable. A subsequent commit
will use it to build the `zone.js` package when building the Ivy Angular
packages as well.

PR Close #35780

scripts/build-package-dist.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * 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
+ */
+
+// The build script used to be here but has been moved to `scripts/build/` in PR
+// https://github.com/angular/angular/pull/35780. This is a temporary placeholder script for people
+// that are not aware of the change and expect to find the script here.
+//
+// TODO: This script can be removed early May 2020.
+'use strict';
+
+const {red} = require('chalk');
+const {relative, resolve} = require('path');
+
+
+const absoluteScriptPath = resolve(`${__dirname}/build/build-packages-dist.js`);
+const relativeScriptPath = relative(process.cwd(), absoluteScriptPath);
+
+console.error(red('ERROR: The build script has been moved to \'scripts/build/\'.'));
+console.error(red(`       Run: node ${relativeScriptPath}`));
+
+process.exit(1);

scripts/build-packages-dist.js

@@ -1,48 +0,0 @@
-#!/usr/bin/env node
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * 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
- */
-
-'use strict';
-
-const {chmod, cp, mkdir, rm} = require('shelljs');
-const {
-  baseDir,
-  bazelBin,
-  bazelCmd,
-  buildTargetPackages,
-  exec,
-  scriptPath,
-} = require('./package-builder');
-
-
-// Build the legacy (view engine) npm packages into `dist/packages-dist/`.
-buildTargetPackages('dist/packages-dist', false, 'Production');
-
-// Build the `zone.js` npm package (into `dist/bin/packages/zone.js/npm_package/`), because it might
-// be needed by other scripts/tests.
-//
-// NOTE: The `zone.js` package is not built as part of `buildTargetPackages()` above, nor is it
-//       copied into the `dist/packages-dist/` directory (despite its source's being inside
-//       `packages/`), because it is not published to npm under the `@angular` scope (as happens for
-//       the rest of the packages).
-console.info('');
-console.info('##############################');
-console.info(`${scriptPath}:`);
-console.info('  Building zone.js npm package');
-console.info('##############################');
-exec(`${bazelCmd} build //packages/zone.js:npm_package`);
-
-// Copy artifacts to `dist/zone.js-dist/`, so they can be easier persisted on CI.
-const buildOutputDir = `${bazelBin}/packages/zone.js/npm_package`;
-const distTargetDir = `${baseDir}/dist/zone.js-dist/zone.js`;
-
-console.info(`# Copy artifacts to ${distTargetDir}`);
-mkdir('-p', distTargetDir);
-rm('-rf', distTargetDir);
-cp('-R', buildOutputDir, distTargetDir);
-chmod('-R', 'u+w', distTargetDir);

scripts/build/build-ivy-npm-packages.js

@@ -6,10 +6,11 @@
  * 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
  */
+
 'use strict';
 
 const {buildTargetPackages} = require('./package-builder');
 
 
-// Build the ivy packages.
+// Build the ivy packages into `dist/packages-dist-ivy-aot/`.
 buildTargetPackages('dist/packages-dist-ivy-aot', true, 'Ivy AOT');

scripts/build/build-packages-dist.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * 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
+ */
+
+'use strict';
+
+const {buildZoneJsPackage} = require('./zone-js-builder');
+const {buildTargetPackages} = require('./package-builder');
+
+
+// Build the legacy (view engine) npm packages into `dist/packages-dist/`.
+buildTargetPackages('dist/packages-dist', false, 'Production');
+
+// Build the `zone.js` npm package into `dist/zone.js-dist/`, because it might be needed by other
+// scripts/tests.
+buildZoneJsPackage();

scripts/build/package-builder.js

@@ -31,7 +31,7 @@ set('-e');
 
 
 /** @type {string} The absolute path to the project root directory. */
-const baseDir = resolve(`${__dirname}/..`);
+const baseDir = resolve(`${__dirname}/../..`);
 
 /** @type {string} The command to use for running bazel. */
 const bazelCmd = `yarn --cwd "${baseDir}" --silent bazel`;
@@ -47,7 +47,7 @@ const bazelBin = exec(`${bazelCmd} info bazel-bin`, true);
 const scriptPath = relative(baseDir, require.main.filename);
 
 module.exports = {
-    baseDir, bazelBin, bazelCmd, buildTargetPackages, exec, scriptPath,
+  baseDir, bazelBin, bazelCmd, buildTargetPackages, exec, scriptPath,
 };
 
 /**
@@ -93,6 +93,8 @@ function buildTargetPackages(destPath, enableIvy, description) {
       chmod('-R', 'u+w', destDir);
     }
   });
+
+  console.info('');
 }
 
 /**

scripts/build/zone-js-builder.js

@@ -0,0 +1,47 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * 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
+ */
+
+'use strict';
+
+const {chmod, cp, mkdir, rm} = require('shelljs');
+const {baseDir, bazelBin, bazelCmd, exec, scriptPath} = require('./package-builder');
+
+
+module.exports = {
+  buildZoneJsPackage,
+};
+
+/**
+ * Build the `zone.js` npm package into `dist/bin/packages/zone.js/npm_package/` and copy it to
+ * `dist/zone.js-dist/` for other scripts/tests to use.
+ *
+ * NOTE: The `zone.js` package is not built as part of `package-builder`'s `buildTargetPackages()`
+ *       nor is it copied into the same directory as the Angular packages (e.g.
+ *       `dist/packages-dist/`) despite its source's being inside `packages/`, because it is not
+ *       published to npm under the `@angular` scope (as happens for the rest of the packages).
+ */
+function buildZoneJsPackage() {
+  console.info('##############################');
+  console.info(`${scriptPath}:`);
+  console.info('  Building zone.js npm package');
+  console.info('##############################');
+  exec(`${bazelCmd} build //packages/zone.js:npm_package`);
+
+  // Copy artifacts to `dist/zone.js-dist/`, so they can be easier persisted on CI and used by
+  // non-bazel scripts/tests.
+  const buildOutputDir = `${bazelBin}/packages/zone.js/npm_package`;
+  const distTargetDir = `${baseDir}/dist/zone.js-dist/zone.js`;
+
+  console.info(`# Copy artifacts to ${distTargetDir}`);
+  mkdir('-p', distTargetDir);
+  rm('-rf', distTargetDir);
+  cp('-R', buildOutputDir, distTargetDir);
+  chmod('-R', 'u+w', distTargetDir);
+
+  console.info('');
+}