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"_rev": "12-ceba655629f53753", "_id": "has-yarn", "readme": "# has-yarn [![Build Status](https://travis-ci.org/sindresorhus/has-yarn.svg?branch=master)](https://travis-ci.org/sindresorhus/has-yarn)\n\n> Check if a project is using [Yarn](https://yarnpkg.com)\n\nUseful for tools that needs to know whether to use `yarn` or `npm` to install dependencies.\n\nIt checks if a `yarn.lock` file is present in the working directory.\n\n\n## Install\n\n```\n$ npm install has-yarn\n```\n\n\n## Usage\n\n```\n.\n├── foo\n│   └── package.json\n└── bar\n ├── package.json\n └── yarn.lock\n```\n\n```js\nconst hasYarn = require('has-yarn');\n\nhasYarn('foo');\n//=> false\n\nhasYarn('bar');\n//=> true\n```\n\n\n## API\n\n### hasYarn([cwd])\n\nReturns a `boolean` of whether the project uses Yarn.\n\n#### cwd\n\nType: `string`
\nDefault: `process.cwd()`\n\nCurrent working directory.\n\n\n## Related\n\n- [has-yarn-cli](https://github.com/sindresorhus/has-yarn-cli) - CLI for this module\n\n\n## License\n\nMIT © [Sindre Sorhus](https://sindresorhus.com)" }