unsafeLifecyclesPolyfill.js 873 Bytes
import React from 'react';

var unsafeLifecyclesPolyfill = function unsafeLifecyclesPolyfill(Component) {
  var prototype = Component.prototype;

  if (!prototype || !prototype.isReactComponent) {
    throw new Error('Can only polyfill class components');
  } // only handle componentWillReceiveProps


  if (typeof prototype.componentWillReceiveProps !== 'function') {
    return Component;
  } // In React 16.9, React.Profiler was introduced together with UNSAFE_componentWillReceiveProps
  // https://reactjs.org/blog/2019/08/08/react-v16.9.0.html#performance-measurements-with-reactprofiler


  if (!React.Profiler) {
    return Component;
  } // Here polyfill get started


  prototype.UNSAFE_componentWillReceiveProps = prototype.componentWillReceiveProps;
  delete prototype.componentWillReceiveProps;
  return Component;
};

export default unsafeLifecyclesPolyfill;