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# @babel/plugin-transform-dotall-regex
> Compile regular expressions using [the `s` (`dotAll`) flag](https://github.com/tc39/proposal-regexp-dotall-flag) to ES5 that works in today’s environments.
## Example
**In**
```js
/./s
```
**Out**
```js
/[\0-\uFFFF]/
```
**In**
```js
/./su
```
**Out**
```js
/[\0-\u{10FFFF}]/u
```
[Here’s an online demo.](https://mothereff.in/regexpu#input=const+regex+%3D+/foo.bar/s%3B%0Aconsole.log%28%0A++regex.test%28%27foo%5Cnbar%27%29%0A%29%3B%0A//+%E2%86%92+true&dotAllFlag=1)
## Installation
```sh
npm install --save-dev @babel/plugin-transform-dotall-regex
```
## Usage
### Via `.babelrc` (recommended)
`.babelrc`
```json
{
"plugins": ["@babel/plugin-transform-dotall-regex"]
}
```
### Via CLI
```sh
$ babel --plugins @babel/plugin-transform-dotall-regex script.js
```
### Via Node.js API
```js
require('@babel/core').transform(code, {
'plugins': ['@babel/plugin-transform-dotall-regex']
});
```
## Author
| [](https://twitter.com/mathias "Follow @mathias on Twitter") |
|---|
| [Mathias Bynens](https://mathiasbynens.be/) |
|
