fastify-feature-flags

fastify-feature-flags

Fastify feature flags plugin. By default it has built-in provider for config module. However it could be extended by various plugins that implement simple interface.

ToC

• fastify-feature-flags
  • ToC
  • Fastify support
  • Installation
  • Features and requirements
  • Usage
  • Docs
  • Changelog
  • See also
  • License

Fastify support

• v1.x.x - supports >= fastify-1.0.0, including v2.x.x versions.

Installation

npm i fastify-feature-flags --save

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Features and requirements

---

• Requires fastify >=1.0.0.
• Node.js >=8.9.0.

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Usage

Add it to your project like regular fastify plugin. Use register method and pass options to it.

const fastify = require('fastify');
const app = fastify();

const ffPlugin = require('fastify-feature-flags');
app.register(ffPlugin, {providers: [new ffPlugin.ConfigProvider()]});

Plugin adds an object with built-in providers and generic provider interface that you can extend. For checking features availability it adds two methods: fastify.featureFlags.isEnabled which returns true or false and fastify.featureFlags.checkEnabled which throws an error if feature is disabled.

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Docs

See docs.

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Changelog

See changelog.

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See also

• unleash - feature toogle service.

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License

Licensed under MIT.

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