# generator-function

> A function that returns the normally hidden `GeneratorFunction` constructor

Latest version **2.0.1** (published 2025-09-30) · MIT license · 0 weekly downloads

## Install

```sh
npm install generator-function
pnpm add generator-function
yarn add generator-function
bun add generator-function
```

## Health

**Score 50/100 (C)** — status: stable.

Positive: esm support; no vulnerabilities.

Warnings: low downloads; no types.

## Facts

| | |
|---|---|
| Version | 2.0.1 |
| Published | 2025-09-30 |
| First published | 2015-10-11 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | ESM + CommonJS |
| Node | >= 0.4 |
| Dependencies | 0 |
| Unpacked size | 9.8 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 2 |
| Author | Jordan Harbamd |
| Maintainers | timothygu, ljharb |
| Keywords | generator, function, native |

## Links

- npm: https://www.npmjs.com/package/generator-function
- Repository: https://github.com/TimothyGu/generator-function
- Homepage: https://github.com/TimothyGu/generator-function#readme
- Issues: https://github.com/TimothyGu/generator-function/issues
- npm.io page: https://npm.io/package/generator-function

## Recent versions

- 2.0.1 (latest) — 2025-09-30
- 2.0.0 — 2025-09-29
- 1.0.0 — 2015-10-11

## README

# generator-function <sup>[![Version Badge][npm-version-svg]][package-url]</sup>

[![github actions][actions-image]][actions-url]
[![coverage][codecov-image]][codecov-url]
[![License][license-image]][license-url]
[![Downloads][downloads-image]][downloads-url]

[![npm badge][npm-badge-png]][package-url]

A function that returns the normally hidden `GeneratorFunction` constructor, when available.

## Getting started

```sh
npm install --save generator-function
```

## Usage/Examples

```js
const assert = require('assert');
const GeneratorFunction = require('generator-function')();

const fn = new GeneratorFunction('return 1');

assert.equal(fn.toString(), 'function* anonymous(\n) {\nreturn 1\n}');

const iterator = fn();

assert.deepEqual(iterator.next(), { done: true, value: 1 });
```

## Tests

Clone the repo, `npm install`, and run `npm test`

[package-url]: https://npmjs.org/package/generator-function
[npm-version-svg]: https://versionbadg.es/TimothyGu/generator-function.svg
[deps-svg]: https://david-dm.org/TimothyGu/generator-function.svg
[deps-url]: https://david-dm.org/TimothyGu/generator-function
[dev-deps-svg]: https://david-dm.org/TimothyGu/generator-function/dev-status.svg
[dev-deps-url]: https://david-dm.org/TimothyGu/generator-function#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/generator-function.png?downloads=true&stars=true
[license-image]: https://img.shields.io/npm/l/generator-function.svg
[license-url]: LICENSE
[downloads-image]: https://img.shields.io/npm/dm/generator-function.svg
[downloads-url]: https://npm-stat.com/charts.html?package=generator-function
[codecov-image]: https://codecov.io/gh/TimothyGu/generator-function/branch/main/graphs/badge.svg
[codecov-url]: https://app.codecov.io/gh/TimothyGu/generator-function/
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/TimothyGu/generator-function
[actions-url]: https://github.com/TimothyGu/generator-function/actions

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_Source: https://npm.io/package/generator-function · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._