/
lint.ts
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/
lint.ts
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/**
* Copyright 2017 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as fs from 'fs';
import * as path from 'path';
import {Configuration, Linter} from 'tslint';
import * as ts from 'typescript';
import {Options} from './cli';
/**
* Run tslint with the default configuration. Returns true on success.
* @param options gts options
* @param files files to run linter on
* @param fix automatically fix linter errors
*/
export function lint(
options: Options, files: string[] = [], fix = false): boolean {
const configPath =
fs.existsSync(path.join(options.targetRootDir, 'tslint.json')) ?
path.join(options.targetRootDir, 'tslint.json') :
path.join(options.gtsRootDir, 'tslint.json');
const program = createProgram(options);
const configuration = Configuration.findConfiguration(configPath, '').results;
const linter = new Linter({fix, formatter: 'codeFrame'}, program);
const srcFiles = files.length > 0 ? files : Linter.getFileNames(program);
srcFiles.forEach(file => {
const sourceFile = program.getSourceFile(file);
if (sourceFile) {
const fileContents = sourceFile.getFullText();
linter.lint(file, fileContents, configuration);
}
});
const result = linter.getResult();
if (result.errorCount || result.warningCount) {
options.logger.log(result.output);
return false;
}
return true;
}
export function createProgram(options: Options): ts.Program {
const tsconfigPath = path.join(options.targetRootDir, 'tsconfig.json');
return Linter.createProgram(tsconfigPath);
}