4a92fa9471
The logic to create additional files needed for Bazel are currently hosted in `ng new`. Such files include the main.*.ts files needed for AOT and a different angular.json to use Bazel builder, among others. This commit refactors the logic into `ng add` so that it can be used to perform the same modifications in an existing project. Users could do so by running `ng add @angular/bazel`. With this change, `ng new` effectively becomes an orchestrator that runs the original `ng new` followed by `ng add @angular/bazel`. PR Close #28436
113 lines
3.6 KiB
TypeScript
113 lines
3.6 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*
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* @fileoverview Schematics for bazel-workspace
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*/
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import {strings} from '@angular-devkit/core';
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import {Rule, SchematicContext, SchematicsException, Tree, apply, applyTemplates, mergeWith, move, url} from '@angular-devkit/schematics';
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import {getWorkspace} from '@schematics/angular/utility/config';
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import {latestVersions} from '@schematics/angular/utility/latest-versions';
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import {validateProjectName} from '@schematics/angular/utility/validation';
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import {Schema as BazelWorkspaceOptions} from './schema';
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/**
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* Look for package.json file for package with `packageName` in node_modules and
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* extract its version.
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*/
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function findVersion(packageName: string, host: Tree): string|null {
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const candidate = `node_modules/${packageName}/package.json`;
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if (host.exists(candidate)) {
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try {
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const packageJson = JSON.parse(host.read(candidate).toString());
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if (packageJson.name === packageName && packageJson.version) {
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return packageJson.version;
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}
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} catch {
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}
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}
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return null;
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}
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/**
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* Clean the version string and return version in the form "1.2.3". Return
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* null if version string is invalid. This is similar to semver.clean() but
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* takes characters like '^' and '~' into account.
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*/
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export function clean(version: string): string|null {
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const matches = version.match(/(\d+\.\d+\.\d+)/);
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return matches && matches.pop() || null;
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}
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/**
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* Returns true if project contains routing module, false otherwise.
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*/
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function hasRoutingModule(host: Tree) {
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let hasRouting = false;
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host.visit((file: string) => { hasRouting = hasRouting || file.endsWith('-routing.module.ts'); });
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return hasRouting;
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}
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/**
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* Returns true if project uses SASS stylesheets, false otherwise.
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*/
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function hasSassStylesheet(host: Tree) {
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let hasSass = false;
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// The proper extension for SASS is .scss
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host.visit((file: string) => { hasSass = hasSass || file.endsWith('.scss'); });
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return hasSass;
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}
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export default function(options: BazelWorkspaceOptions): Rule {
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return (host: Tree, context: SchematicContext) => {
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const name = options.name || getWorkspace(host).defaultProject;
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if (!name) {
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throw new Error('Please provide a name for Bazel workspace');
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}
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validateProjectName(name);
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// If the project already has some deps installed, Bazel should use existing
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// versions.
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const existingVersions = {
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Angular: findVersion('@angular/core', host),
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RxJs: findVersion('rxjs', host),
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};
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Object.keys(existingVersions).forEach((name: 'Angular' | 'RxJs') => {
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const version = existingVersions[name] as string;
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if (version) {
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context.logger.info(`Bazel will reuse existing version for ${name}: ${version}`);
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}
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});
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if (!host.exists('yarn.lock')) {
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host.create('yarn.lock', '');
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}
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const workspaceVersions = {
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'RULES_NODEJS_VERSION': '0.16.5',
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'RULES_TYPESCRIPT_VERSION': '0.22.1',
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'ANGULAR_VERSION': existingVersions.Angular || clean(latestVersions.Angular),
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'RXJS_VERSION': existingVersions.RxJs || clean(latestVersions.RxJs),
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// TODO(kyliau): Consider moving this to latest-versions.ts
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'RULES_SASS_VERSION': '1.15.1',
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};
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return mergeWith(apply(url('./files'), [
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applyTemplates({
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utils: strings,
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name,
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'dot': '.', ...workspaceVersions,
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routing: hasRoutingModule(host),
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sass: hasSassStylesheet(host),
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}),
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]));
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};
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}
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