react-native-flip/example/node_modules/@egjs/hammerjs/src/utils/inherit.js

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import assign from './assign';
/**
 * @private
 * simple class inheritance
 * @param {Function} child
 * @param {Function} base
 * @param {Object} [properties]
 */
export default function inherit(child, base, properties) {
  let baseP = base.prototype;
  let childP;

  childP = child.prototype = Object.create(baseP);
  childP.constructor = child;
  childP._super = baseP;

  if (properties) {
    assign(childP, properties);
  }
}