build: remove usage of built package from build script

Previously, the `@angular/core` package which was being built was used
during the build process. This package was only used for logging and
has now been replaced with the Console instead. This prevents potential
logging issues if there are bugs or errors within the package being built.

Author: clydin

scripts/build.ts

@@ -6,7 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import { logging } from '@angular-devkit/core';
 import { spawn } from 'child_process';
 import fs from 'fs';
 import { dirname, join, relative, resolve } from 'path';
@@ -35,7 +34,7 @@ function _copy(from: string, to: string) {
   fs.writeFileSync(to, buffer);
 }
 
-function _recursiveCopy(from: string, to: string, logger: logging.Logger) {
+function _recursiveCopy(from: string, to: string, logger: Console) {
   if (!fs.existsSync(from)) {
     logger.error(`File "${from}" does not exist.`);
     process.exit(4);
@@ -53,13 +52,13 @@ function rimraf(location: string) {
   fs.rmSync(location, { force: true, recursive: true, maxRetries: 3 });
 }
 
-function _clean(logger: logging.Logger) {
+function _clean(logger: Console) {
   logger.info('Cleaning...');
   logger.info('  Removing dist/...');
   rimraf(join(__dirname, '../dist'));
 }
 
-function _exec(cmd: string, captureStdout: boolean, logger: logging.Logger): Promise<string> {
+function _exec(cmd: string, captureStdout: boolean, logger: Console): Promise<string> {
   return new Promise((resolve, reject) => {
     const proc = spawn(cmd, {
       stdio: 'pipe',
@@ -89,36 +88,40 @@ function _exec(cmd: string, captureStdout: boolean, logger: logging.Logger): Pro
   });
 }
 
-async function _build(logger: logging.Logger, mode: BuildMode): Promise<string[]> {
-  logger.info(`Building (mode=${mode})...`);
+async function _build(logger: Console, mode: BuildMode): Promise<string[]> {
+  logger.group(`Building (mode=${mode})...`);
 
-  const queryLogger = logger.createChild('query');
+  logger.group('Finding targets...');
   const queryTargetsCmd =
     `${bazelCmd} query --output=label "attr(name, npm_package_archive, //packages/...` +
     ' except //packages/angular/ssr/schematics/...)"';
-  const targets = (await _exec(queryTargetsCmd, true, queryLogger)).split(/\r?\n/);
-
-  const buildLogger = logger.createChild('build');
+  const targets = (await _exec(queryTargetsCmd, true, logger)).split(/\r?\n/);
+  logger.groupEnd();
 
   // If we are in release mode, run `bazel clean` to ensure the execroot and action cache
   // are not populated. This is necessary because targets using `npm_package` rely on
   // workspace status variables for the package version. Such NPM package targets are not
   // rebuilt if only the workspace status variables change. This could result in accidental
   // re-use of previously built package output with a different `version` in the `package.json`.
   if (mode == 'release') {
-    buildLogger.info('Building in release mode. Resetting the Bazel execroot and action cache.');
-    await _exec(`${bazelCmd} clean`, false, buildLogger);
+    logger.info('Building in release mode. Resetting the Bazel execroot and action cache.');
+    await _exec(`${bazelCmd} clean`, false, logger);
   }
 
-  await _exec(`${bazelCmd} build --config=${mode} ${targets.join(' ')}`, false, buildLogger);
+  logger.group('Building targets...');
+  await _exec(`${bazelCmd} build --config=${mode} ${targets.join(' ')}`, false, logger);
+  logger.groupEnd();
+
+  logger.groupEnd();
 
   return targets;
 }
 
 export default async function (
   argv: { local?: boolean; snapshot?: boolean } = {},
-  logger: logging.Logger = new logging.Logger('build-logger'),
 ): Promise<{ name: string; outputPath: string }[]> {
+  const logger = globalThis.console;
+
   const bazelBin = await _exec(`${bazelCmd} info bazel-bin`, true, logger);
 
   _clean(logger);
@@ -135,8 +138,7 @@ export default async function (
   const targets = await _build(logger, buildMode);
   const output: { name: string; outputPath: string }[] = [];
 
-  logger.info('Moving packages and tars to dist/');
-  const packageLogger = logger.createChild('packages');
+  logger.group('Moving packages and tars to dist/');
 
   for (const target of targets) {
     const packageDir = target.replace(/\/\/packages\/(.*):npm_package_archive/, '$1');
@@ -146,13 +148,15 @@ export default async function (
     const packageName = require(packageJsonPath).name;
     const destDir = `${distRoot}/${packageName}`;
 
-    packageLogger.info(packageName);
+    logger.info(packageName);
 
     _recursiveCopy(bazelOutDir, destDir, logger);
     _copy(tarPath, `${distRoot}/${packageName.replace('@', '_').replace('/', '_')}.tgz`);
 
     output.push({ name: packageDir, outputPath: destDir });
   }
 
+  logger.groupEnd();
+
   return output;
 }