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/home/yanggyein/yanggyein/yang_home/node_modules/detect-file/README.md
# detect-file [](https://www.npmjs.com/package/detect-file) [](https://npmjs.org/package/detect-file) [](https://npmjs.org/package/detect-file) [](https://travis-ci.org/doowb/detect-file) [](https://ci.appveyor.com/project/doowb/detect-file) > Detects if a file exists and returns the resolved filepath. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save detect-file ``` Install with [yarn](https://yarnpkg.com): ```sh $ yarn add detect-file ``` ## Usage ```js var detect = require('detect-file'); ``` ## API ### [detect](index.js#L33) Detect the given `filepath` if it exists. **Params** * `filepath` **{String}**: filepath to detect. * `options` **{Object}**: Additional options. * `options.nocase` **{Boolean}**: Set this to `true` to force case-insensitive filename checks. This is useful on case sensitive file systems. * `returns` **{String}**: Returns the detected filepath if it exists, otherwise returns `null`. **Example** ```js var res = detect('package.json'); console.log(res); //=> "package.json" var res = detect('fake-file.json'); console.log(res) //=> null ``` ## Case sensitive file systems When using the `nocase` option, this library will attempt to detect the filepath with the following methods: 1. Try to read all files in the `filepath` using `fs.readdirSync`. If successful and `filepath` is a directory, return the `filepath`. 2. Try to read all files in the `filepath`'s directory using `fs.readdirSync`. If successful, do case insensitive comparasions of the `filepath` to the files in `filepath`'s directory. ## About ### Related projects [fs-exists-sync](https://www.npmjs.com/package/fs-exists-sync): Drop-in replacement for `fs.existsSync` with zero dependencies. Other libs I found either have crucial differences… [more](https://github.com/jonschlinkert/fs-exists-sync) | [homepage](https://github.com/jonschlinkert/fs-exists-sync "Drop-in replacement for `fs.existsSync` with zero dependencies. Other libs I found either have crucial differences from fs.existsSync, or unnecessary dependencies. See README.md for more info.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` ### Running tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ### Author **Brian Woodward** * [github/doowb](https://github.com/doowb) * [twitter/doowb](https://twitter.com/doowb) ### License Copyright © 2017, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on August 05, 2017._