99 lines
3.6 KiB
Markdown
99 lines
3.6 KiB
Markdown
# 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._ |