77 lines
2.5 KiB
TypeScript
77 lines
2.5 KiB
TypeScript
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/**
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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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import {Rule, SchematicContext, Tree, chain, noop} from '@angular-devkit/schematics';
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import {NodePackageInstallTask} from '@angular-devkit/schematics/tasks';
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import {Schema} from './schema';
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export default function(options: Schema): Rule {
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return chain([
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options && options.skipPackageJson ? noop() : addPackageJsonDependency(), addScript(options)
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]);
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}
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/** Adds a package.json dependency for document-register-element */
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function addPackageJsonDependency() {
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return (host: Tree, context: SchematicContext) => {
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if (host.exists('package.json')) {
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const jsonStr = host.read('package.json') !.toString('utf-8');
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const json = JSON.parse(jsonStr);
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// If there are no dependencies, create an entry for dependencies.
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const type = 'dependencies';
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if (!json[type]) {
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json[type] = {};
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}
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// If not already present, add the dependency.
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const pkg = 'document-register-element';
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const version = '^1.7.2';
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if (!json[type][pkg]) {
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json[type][pkg] = version;
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}
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// Write the JSON back to package.json
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host.overwrite('package.json', JSON.stringify(json, null, 2));
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context.logger.log('info', 'Added `document-register-element` as a dependency.');
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// Install the dependency
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context.addTask(new NodePackageInstallTask());
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}
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return host;
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};
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}
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/** Adds the document-register-element.js script to the angular CLI json. */
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function addScript(options: Schema) {
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return (host: Tree, context: SchematicContext) => {
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const script = 'node_modules/document-register-element/build/document-register-element.js';
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try {
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// Handle the new json - angular.json
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const angularJsonFile = host.read('angular.json');
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if (angularJsonFile) {
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const json = JSON.parse(angularJsonFile.toString('utf-8'));
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const project = Object.keys(json['projects'])[0] || options.project;
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const scripts = json['projects'][project]['architect']['build']['options']['scripts'];
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scripts.push({input: script});
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host.overwrite('angular.json', JSON.stringify(json, null, 2));
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}
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} catch (e) {
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context.logger.log(
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'warn', 'Failed to add the polyfill document-register-element.js to scripts');
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}
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context.logger.log('info', 'Added document-register-element.js polyfill to scripts');
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return host;
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};
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}
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