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# regjsgen [![Build status][ci-img]][ci] [![Code coverage status][codecov-img]][codecov]
Generate regular expressions from [regjsparser][regjsparser]’s AST.
## Installation
```sh
npm i regjsgen
```
## API
### `regjsgen.generate(ast)`
This function accepts an abstract syntax tree representing a regular expression (see [regjsparser][regjsparser]), and returns the generated regular expression string.
```js
const regjsparser = require('regjsparser');
const regjsgen = require('regjsgen');
// Generate an AST with `regjsparser`.
let ast = regjsparser.parse(regex);
// Modify AST
// …
// Generate `RegExp` string with `regjsgen`.
let regex = regjsgen.generate(ast);
```
## Support
Tested in Node.js 10, 12, 14, and 16.<br>
Compatible with regjsparser v0.7.0’s AST.
[ci]: https://github.com/bnjmnt4n/regjsgen/actions
[ci-img]: https://github.com/bnjmnt4n/regjsgen/workflows/Node.js%20CI/badge.svg
[codecov]: https://codecov.io/gh/bnjmnt4n/regjsgen
[codecov-img]: https://codecov.io/gh/bnjmnt4n/regjsgen/branch/master/graph/badge.svg
[regjsparser]: https://github.com/jviereck/regjsparser