WKWebView CORS Solution: callback.js

callback.js

import _ from 'lodash';

const resolvePromise = (uuid, resolveData, rejectReason) => {
  const promise = _.get(window, `jsCallbackBridge.promises.${uuid}`);
  if (!promise) {
    return;
  }
  
  const { resole, reject } = {...promise};

  if (rejectReason) {
    reject(rejectReason);
    return;
  }

  // resolveData is base64-encoded
  const jsonStr = window.atob(resolveData);
  const json = JSON.parse(jsonStr);
  resolve(json);
};

window.jsCallbackBridge = window.jsCallbackBridge || {};
window.jsCallbackBridge.promises = window.jsCallbackBridge.promises || {};
window.jsCallbackBridge.resolvePromise = window.jsCallbackBridge.resolvePromise || resolvePromise;