react-native-gesture-handler/lib/typescript/web_hammer/PinchGestureHandler.js

Declarative API exposing native platform touch and gesture system to React Native

import Hammer from '@egjs/hammerjs';
import IndiscreteGestureHandler from './IndiscreteGestureHandler';
class PinchGestureHandler extends IndiscreteGestureHandler {
    get name() {
        return 'pinch';
    }
    get NativeGestureClass() {
        return Hammer.Pinch;
    }
    transformNativeEvent({ scale, velocity, center }) {
        return {
            focalX: center.x,
            focalY: center.y,
            velocity,
            scale,
        };
    }
}
export default PinchGestureHandler;