# Permissions Policy

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**NOTE: Since the `Feature-Policy` header was deprecated I've decided to adapt the old Evan Hahn `Permissions-Policy` repository, this project was entirely built on top of his work.**

This is a Express middleware to set the `Permissions-Policy` header. You can read more about it [here](https://www.w3.org/TR/permissions-policy-1/).

To use:

```javascript
const permissionsPolicy = require("permissions-policy");

// ...

app.use(
  permissionsPolicy({
    features: {
      fullscreen: ["self"], // fullscreen=()
      vibrate: ["none"], // vibrate=(none)
      payment: ["self", '"example.com"'], // payment=(self "example.com")
      syncXhr: [], // syncXhr=()
    },
  })
);
```

The following features are currently supported:

- `accelerometer`
- `ambientLightSensor`
- `autoplay`
- `battery`
- `camera`
- `displayCapture`
- `documentDomain`
- `documentWrite`
- `encryptedMedia`
- `executionWhileNotRendered`
- `executionWhileOutOfViewport`
- `fontDisplayLateSwap`
- `fullscreen`
- `geolocation`
- `gyroscope`
- `interestCohort`
- `layoutAnimations`
- `legacyImageFormats`
- `loadingFrameDefaultEager`
- `magnetometer`
- `microphone`
- `midi`
- `navigationOverride`
- `notifications`
- `oversizedImages`
- `payment`
- `pictureInPicture`
- `publickeyCredentials`
- `push`
- `serial`
- `speaker`
- `syncScript`
- `syncXhr`
- `unoptimizedImages`
- `unoptimizedLosslessImages`
- `unoptimizedLossyImages`
- `unsizedMedia`
- `usb`
- `verticalScroll`
- `vibrate`
- `vr`
- `wakeLock`
- `xr`
- `xrSpatialTracking`