51 lines
1.3 KiB
Markdown
Executable file
51 lines
1.3 KiB
Markdown
Executable file
# common-path-prefix
|
|
|
|
Computes the longest prefix string that is common to each path, excluding the base component. Tested with Node.js 8 and above.
|
|
|
|
## Installation
|
|
|
|
```console
|
|
npm install common-path-prefix
|
|
```
|
|
|
|
## Usage
|
|
|
|
The module has one default export, the `commonPathPrefix` function:
|
|
|
|
```js
|
|
const commonPathPrefix = require('common-path-prefix')
|
|
```
|
|
|
|
Call `commonPathPrefix()` with an array of paths (strings) and an optional separator character:
|
|
|
|
```js
|
|
const paths = ['templates/main.handlebars', 'templates/_partial.handlebars']
|
|
|
|
commonPathPrefix(paths, '/') // returns 'templates/'
|
|
```
|
|
|
|
If the separator is not provided the first `/` or `\` found in any of the paths is used. Otherwise the platform-default value is used:
|
|
|
|
```js
|
|
commonPathPrefix(['templates/main.handlebars', 'templates/_partial.handlebars']) // returns 'templates/'
|
|
commonPathPrefix(['templates\\main.handlebars', 'templates\\_partial.handlebars']) // returns 'templates\\'
|
|
```
|
|
|
|
You can provide any separator, for example:
|
|
|
|
```js
|
|
commonPathPrefix(['foo$bar', 'foo$baz'], '$') // returns 'foo$''
|
|
```
|
|
|
|
An empty string is returned if no common prefix exists:
|
|
|
|
```js
|
|
commonPathPrefix(['foo/bar', 'baz/qux']) // returns ''
|
|
commonPathPrefix(['foo/bar']) // returns ''
|
|
```
|
|
|
|
Note that the following *does* have a common prefix:
|
|
|
|
```js
|
|
commonPathPrefix(['/foo/bar', '/baz/qux']) // returns '/'
|
|
```
|