hunk.code_window:       ...format !== undefined ? { format } : {},
         hidden,
         ...userAnalytics ? { userAnalytics } : {},
         ...positional !== undefined ? { positional } : {},
       };
       options.push(option);
  
hunk.labels: keep keep add keep keep keep keep
hunk.after_edit:       ...deprecated !== undefined ? { deprecated } : {},
  
hunk.file_path: packages/angular/cli/utilities/json-schema.ts
hunk.type: add
file: /**
   * @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 * as fs from 'fs';
  import * as path from 'path';
  import * as tsLint from 'tslint';  // tslint:disable-line:no-implicit-dependencies
  import * as ts from 'typescript';  // tslint:disable-line:no-implicit-dependencies
  import { SchematicContext, TaskExecutor } from '../../src';
  import { TslintFixTaskOptions } from './options';
  
  
  function _loadConfiguration(
    Configuration: typeof tsLint.Configuration,
    options: TslintFixTaskOptions,
    root: string,
    file?: string,
  ) {
    if (options.tslintConfig) {
      return Configuration.parseConfigFile(options.tslintConfig, root);
    } else if (options.tslintPath) {
      return Configuration.findConfiguration(path.join(root, options.tslintPath)).results;
    } else if (file) {
      return Configuration.findConfiguration(null, file).results;
    } else {
      throw new Error('Executor must specify a tslint configuration.');
    }
  }
  
  
  function _getFileContent(
    file: string,
    options: TslintFixTaskOptions,
    program?: ts.Program,
  ): string | undefined {
    // The linter retrieves the SourceFile TS node directly if a program is used
    if (program) {
      const source = program.getSourceFile(file);
      if (!source) {
        const message
          = `File '${file}' is not part of the TypeScript project '${options.tsConfigPath}'.`;
        throw new Error(message);
      }
  
      return source.getFullText(source);
    }
  
    // NOTE: The tslint CLI checks for and excludes MPEG transport streams; this does not.
    try {
      // Strip BOM from file data.
      // https://stackoverflow.com/questions/24356713
      return fs.readFileSync(file, 'utf-8').replace(/^\uFEFF/, '');
    } catch {
      throw new Error(`Could not read file '${file}'.`);
    }
  }
  
  
  function _listAllFiles(root: string): string[] {
    const result: string[] = [];
  
    function _recurse(location: string) {
      const dir = fs.readdirSync(path.join(root, location));
  
      dir.forEach(name => {
        const loc = path.join(location, name);
        if (fs.statSync(path.join(root, loc)).isDirectory()) {
          _recurse(loc);
        } else {
          result.push(loc);
        }
      });
    }
    _recurse('');
  
    return result;
  }
  
  /** @deprecated since version 11. Use `ng lint --fix` directly instead. */
  export default function (): TaskExecutor<TslintFixTaskOptions> {
    return async (options: TslintFixTaskOptions = {}, context: SchematicContext) => {
      const root = process.cwd();
      const tslint = await import('tslint'); // tslint:disable-line:no-implicit-dependencies
  
      const includes = (
        Array.isArray(options.includes)
          ? options.includes
          : (options.includes ? [options.includes] : [])
      );
      const files = (
        Array.isArray(options.files)
          ? options.files
          : (options.files ? [options.files] : [])
      );
  
      const Linter = tslint.Linter;
      const Configuration = tslint.Configuration;
      let program: ts.Program | undefined = undefined;
      let filesToLint: string[] = files;
  
      if (options.tsConfigPath && files.length == 0) {
        const tsConfigPath = path.join(process.cwd(), options.tsConfigPath);
  
        if (!fs.existsSync(tsConfigPath)) {
          throw new Error('Could not find tsconfig.');
        }
  
        program = Linter.createProgram(tsConfigPath);
        filesToLint = Linter.getFileNames(program);
      }
  
      if (includes.length > 0) {
        const allFilesRel = _listAllFiles(root);
        const pattern = '^('
          + (includes as string[])
            .map(ex => '('
              + ex.split(/[\/\\]/g).map(f => f
                .replace(/[\-\[\]{}()+?.^$|]/g, '\\$&')
                .replace(/^\*\*/g, '(.+?)?')
                .replace(/\*/g, '[^/\\\\]*'))
                .join('[\/\\\\]')
              + ')')
            .join('|')
          + ')($|/|\\\\)';
        const re = new RegExp(pattern);
  
        filesToLint.push(...allFilesRel
          .filter(x => re.test(x))
          .map(x => path.join(root, x)),
        );
      }
  
      const lintOptions = {
        fix: true,
        formatter: options.format || 'prose',
      };
  
      const linter = new Linter(lintOptions, program);
      // If directory doesn't change, we
      let lastDirectory: string | null = null;
      let config;
  
      for (const file of filesToLint) {
        const dir = path.dirname(file);
        if (lastDirectory !== dir) {
          lastDirectory = dir;
          config = _loadConfiguration(Configuration, options, root, file);
        }
        const content = _getFileContent(file, options, program);
  
        if (!content) {
          continue;
        }
  
        linter.lint(file, content, config);
      }
  
      const result = linter.getResult();
  
      // Format and show the results.
      if (!options.silent) {
        const Formatter = tslint.findFormatter(options.format || 'prose');
        if (!Formatter) {
          throw new Error(`Invalid lint format "${options.format}".`);
        }
        const formatter = new Formatter();
  
        // Certain tslint formatters outputs '\n' when there are no failures.
        // This will bloat the console when having schematics running refactor tasks.
        // see https://github.com/palantir/tslint/issues/4244
        const output = (formatter.format(result.failures, result.fixes) || '').trim();
        if (output) {
          context.logger.info(output);
        }
      }
  
      if (!options.ignoreErrors && result.errorCount > 0) {
        throw new Error('Lint errors were found.');
      }
    };
  }
  