Mathias Bynens 5d4c736413 Import babel-plugin-transform-unicode-property-regex (#6499)
* Import babel-plugin-transform-unicode-property-regex

Original: https://github.com/mathiasbynens/babel-plugin-transform-unicode-property-regex

Moving it into the official Babel repository makes it easier to maintain the transform.

* Update package.json

* Update README.md

* fixup

* fixup 2
2017-10-18 13:58:44 -04:00

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# @babel/plugin-transform-unicode-property-regex
Compile [Unicode property escapes](https://github.com/mathiasbynens/regexpu-core/blob/master/property-escapes.md) (`\p{…}` and `\P{…}`) in Unicode regular expressions to ES5 or ES6 that works in todays environments.
**Note:** the Unicode property escape syntax is non-standard and may or may not reflect what eventually gets specified.
[Heres an online demo.](https://mothereff.in/regexpu#input=var+regex+%3D+/%5Cp%7BScript_Extensions%3DGreek%7D/u%3B&unicodePropertyEscape=1)
## Installation
```sh
$ npm install @babel/plugin-transform-unicode-property-regex
```
## Usage
### Via `.babelrc` (recommended)
`.babelrc`
```json
{
"plugins": ["transform-unicode-property-regex"]
}
```
### Via CLI
```sh
$ babel --plugins transform-unicode-property-regex script.js
```
### Via Node.js API
```js
require('@babel/core').transform(code, {
'plugins': ['transform-unicode-property-regex']
});
```
To transpile to ES6/ES2015:
```js
require('@babel/core').transform(code, {
'plugins': [
['transform-unicode-property-regex', { 'useUnicodeFlag': true }]
]
});
```
## Author
| [![twitter/mathias](https://gravatar.com/avatar/24e08a9ea84deb17ae121074d0f17125?s=70)](https://twitter.com/mathias "Follow @mathias on Twitter") |
|---|
| [Mathias Bynens](https://mathiasbynens.be/) |