feature-gate
v1.2.0
Published
A library for handling features in large-scale React apps
Downloads
1,061
Readme
React feature gate
inspired by https://github.com/w01fgang/react-permission-gate
Easily render or hide pieces of UI relative to the user's feature flags.
Supports Typescript and Flow type
Example
full example here
import { FeatureGateProvider } from 'feature-gate';
// define or get from api features and freeze them
const features = Object.freeze({
feature1: 'default',
feature2: 'extended',
ABtest: 'A',
});
function MyApp() {
const featureFlags = { // get from user api
feature1: 'default',
feature2: 'none',
ABtest: 'B',
};
return (
<FeatureGateProvider featureFlags={featureFlags} features={features}>
<App />
</FeatureGateProvider>
)
}
then anywhere in the app use names of features defined in the features map
import { FeatureGate } from 'feature-gate';
<FeatureGate name="feature1">
<div>Component available for user with feature1 enabled</div>
</FeatureGate>
import { FeatureSwitch } from 'feature-gate';
<FeatureSwitch name="ABtest" fallback={<div>B test</div>}>
<div>A test</div>
</FeatureSwitch>
or use hook
import { useFeature } from 'feature-gate';
...
const { enabled: showFeature1 } = useFeature('feature1');
// feature status for the current user
...
{showFeature1 && <div>Component available for user with feature1 enabled</div>}
Advanced usage
A validator function can be provided
import { FeatureGateProvider } from 'feature-gate';
...
// define or get from api rules and freeze them
const features = Object.freeze({
feature1: 'default',
ABtest: 'A',
});
function validator({ featureFlags, features, name }) {
// default validator implementation
const feature = featureFlags[name];
if (!feature) return false;
return features[name] === feature;
}
function MyApp() {
const featureFlags = { // get from user api
feature1: 'off',
ABtest: 'A',
};
return (
<FeatureGateProvider featureFlags={featureFlags} features={features} validator={validator}>
<App />
</FeatureGateProvider>
)
}