# @textlint/feature-flag

> textlint internal feature flag manager.

Latest version **15.8.0** (published 2026-08-01) · MIT license · 0 weekly downloads

## Install

```sh
npm install @textlint/feature-flag
pnpm add @textlint/feature-flag
yarn add @textlint/feature-flag
bun add @textlint/feature-flag
```

## Health

**Score 70/100 (B)** — status: active.

Positive: has types; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score.

Warnings: low downloads; no esm support.

## Facts

| | |
|---|---|
| Version | 15.8.0 |
| Published | 2026-08-01 |
| First published | 2017-05-13 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Dependencies | 0 |
| Unpacked size | 12.5 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 3181 |
| Author | azu |
| Maintainers | azu, textlint-user |
| Keywords | textlint |

## Links

- npm: https://www.npmjs.com/package/@textlint/feature-flag
- Repository: https://github.com/textlint/textlint
- Homepage: https://github.com/textlint/textlint/tree/master/packages/@textlint/feature-flag/
- Issues: https://github.com/textlint/textlint/issues
- npm.io page: https://npm.io/package/@textlint/feature-flag

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## Recent versions

- 15.8.0 (latest) — 2026-08-01
- 13.4.2-next.0 (next) — 2024-02-02
- 12.0.0-beta.3 (beta) — 2021-05-24
- 3.1.0-alpha.0f2fd6f9 (canary) — 2018-07-16
- 15.7.1 — 2026-05-18
- 15.7.0 — 2026-05-14
- 15.6.1 — 2026-05-11
- 15.6.0 — 2026-04-26
- 15.5.4 — 2026-04-09
- 15.5.2 — 2026-02-21
- 15.5.1 — 2026-01-19
- 15.5.0 — 2025-12-07
- 15.4.1 — 2025-12-03
- 15.4.0 — 2025-11-17
- 15.3.0 — 2025-11-10
- … 95 more at https://npm.io/package/@textlint/feature-flag/versions

## README

# @textlint/feature-flag

textlint internal feature flag manager.

## Install

Install with [npm](https://www.npmjs.com/):

    npm install @textlint/feature-flag

## Usage

```js
import { coreFlags, isFeatureEnabled, setFeature } from "@textlint/feature-flag";
// core flag
assert.ok(coreFlags.runningCLI === false);
assert.ok(coreFlags.runningTester === false); // default loose
coreFlags.runningCLI = true;
coreFlags.runningTester = true;
coreFlags.experimental = true;
assert.ok(coreFlags.runningCLI === true);
assert.ok(coreFlags.runningTester === true);
assert.ok(coreFlags.experimental === true);
// feature-flag
try{
    isFeatureEnabled("test")
}catch(error){
    // default strict
}
setFeature("test", true);
assert.ok(isFeatureEnabled("test") === true);

```


## Changelog

See [Releases page](https://github.com/textlint/textlint/releases).

## Running tests

Install devDependencies and Run `npm test`:

    npm i -d && npm test

## Contributing

Pull requests and stars are always welcome.

For bugs and feature requests, [please create an issue](https://github.com/textlint/textlint/issues).

1. Fork it!
2. Create your feature branch: `git checkout -b my-new-feature`
3. Commit your changes: `git commit -am 'Add some feature'`
4. Push to the branch: `git push origin my-new-feature`
5. Submit a pull request :D

## Author

- [github/azu](https://github.com/azu)
- [twitter/azu_re](https://twitter.com/azu_re)

## License

MIT © azu

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