Feature Policy

NOTE: The Feature-Policy header has been deprecated by browsers in favor of Permissions-Policy. This module will still be supported but no new features will be added.

This is Express middleware to set the Feature-Policy header. You can read more about it here and here.

To use:

const featurePolicy = require("feature-policy");

// ...

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

The following features are currently supported:

• accelerometer
• ambientLightSensor
• autoplay
• battery
• camera
• displayCapture
• documentDomain
• documentWrite
• encryptedMedia
• executionWhileNotRendered
• executionWhileOutOfViewport
• fontDisplayLateSwap
• fullscreen
• geolocation
• gyroscope
• 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