53 lines
1.8 KiB
TypeScript
53 lines
1.8 KiB
TypeScript
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/**
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* @license
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* Copyright Google LLC 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, SchematicsException, Tree} from '@angular-devkit/schematics';
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import {relative} from 'path';
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import {getProjectTsConfigPaths} from '../../utils/project_tsconfig_paths';
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import {createMigrationProgram} from '../../utils/typescript/compiler_host';
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import {findNativeEncapsulationNodes} from './util';
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/** Migration that switches from `ViewEncapsulation.Native` to `ViewEncapsulation.ShadowDom`. */
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export default function(): Rule {
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return (tree: Tree) => {
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const {buildPaths, testPaths} = getProjectTsConfigPaths(tree);
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const basePath = process.cwd();
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const allPaths = [...buildPaths, ...testPaths];
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if (!allPaths.length) {
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throw new SchematicsException(
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'Could not find any tsconfig file. Cannot migrate away from Native view encapsulation.');
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}
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for (const tsconfigPath of allPaths) {
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runNativeViewEncapsulationMigration(tree, tsconfigPath, basePath);
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}
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};
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}
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function runNativeViewEncapsulationMigration(tree: Tree, tsconfigPath: string, basePath: string) {
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const {program} = createMigrationProgram(tree, tsconfigPath, basePath);
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const typeChecker = program.getTypeChecker();
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const sourceFiles = program.getSourceFiles().filter(
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f => !f.isDeclarationFile && !program.isSourceFileFromExternalLibrary(f));
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sourceFiles.forEach(sourceFile => {
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const update = tree.beginUpdate(relative(basePath, sourceFile.fileName));
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const identifiers = findNativeEncapsulationNodes(typeChecker, sourceFile);
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identifiers.forEach(node => {
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update.remove(node.getStart(), node.getWidth());
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update.insertRight(node.getStart(), 'ShadowDom');
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});
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tree.commitUpdate(update);
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});
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}
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