angular-cli/packages/schematics/angular/migrations/update-9/remove-tsickle.ts

/**
 * @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
 */
import { JsonParseMode, parseJsonAst } from '@angular-devkit/core';
import { Rule, Tree } from '@angular-devkit/schematics';
import { removePackageJsonDependency } from '../../utility/dependencies';
import { findPropertyInAstObject, removePropertyInAstObject } from '../../utility/json-utils';
import { Builders } from '../../utility/workspace-models';
import { getAllOptions, getTargets, getWorkspace } from './utils';

/**
 * Remove tsickle from libraries
 */
export function removeTsickle(): Rule {
  return (tree: Tree) => {
    removePackageJsonDependency(tree, 'tsickle');

    const workspace = getWorkspace(tree);

    for (const { target } of getTargets(workspace, 'build', Builders.NgPackagr)) {
      for (const options of getAllOptions(target)) {
        const tsConfigOption = findPropertyInAstObject(options, 'tsConfig');
        if (!tsConfigOption || tsConfigOption.kind !== 'string') {
          continue;
        }

        const tsConfigContent = tree.read(tsConfigOption.value);
        if (!tsConfigContent) {
          continue;
        }

        const tsConfigAst = parseJsonAst(tsConfigContent.toString(), JsonParseMode.Loose);
        if (!tsConfigAst || tsConfigAst.kind !== 'object') {
          continue;
        }

        const ngCompilerOptions = findPropertyInAstObject(tsConfigAst, 'angularCompilerOptions');
        if (ngCompilerOptions && ngCompilerOptions.kind === 'object') {
          // remove annotateForClosureCompiler option
          const recorder = tree.beginUpdate(tsConfigOption.value);
          removePropertyInAstObject(recorder, ngCompilerOptions, 'annotateForClosureCompiler');
          tree.commitUpdate(recorder);
        }
      }
    }

    return tree;
  };
}