react-native-reanimated/lib/module/reanimated2/js-reanimated/index.js

More powerful alternative to Animated library for React Native.

import JSReanimated from './JSReanimated';
const reanimatedJS = new JSReanimated();

global._makeShareableClone = c => c;

global._scheduleOnJS = setImmediate;
export const _updatePropsJS = (updates, viewRef) => {
  if (viewRef._component) {
    const component = viewRef._component;
    const [rawStyles] = Object.keys(updates).reduce((acc, key) => {
      const value = updates[key];
      const index = typeof value === 'function' ? 1 : 0;
      acc[index][key] = value;
      return acc;
    }, [{}, {}]);

    if (typeof component.setNativeProps === 'function') {
      setNativeProps(component, rawStyles);
    } else if (Object.keys(component.props).length > 0) {
      Object.keys(component.props).forEach(key => {
        if (!rawStyles[key]) {
          return;
        }

        const dashedKey = key.replace(/[A-Z]/g, m => '-' + m.toLowerCase());

        component._touchableNode.setAttribute(dashedKey, rawStyles[key]);
      });
    } else {
      console.warn('It is not possible to manipulate component');
    }
  }
};

const setNativeProps = (component, style) => {
  const previousStyle = component.previousStyle ? component.previousStyle : {};
  const currentStyle = { ...previousStyle,
    ...style
  };
  component.previousStyle = currentStyle;
  component.setNativeProps({
    style: currentStyle
  });
};

export default reanimatedJS;
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