rax-hot-module-replacement-webpack-plugin/src/RaxJsonpMainTemplate.runtime.js

/*
  MIT License http://www.opensource.org/licenses/mit-license.php
  Author Tobias Koppers @sokra
*/
/* globals hotAddUpdateChunk parentHotUpdateCallback document XMLHttpRequest $require$ $hotChunkFilename$ $hotMainFilename$ */
module.exports = function() {
  function webpackHotUpdateCallback(chunkId, moreModules) {
    // eslint-disable-line no-unused-vars
    hotAddUpdateChunk(chunkId, moreModules);
    if (parentHotUpdateCallback) parentHotUpdateCallback(chunkId, moreModules);
  } // $semicolon

  function hotDownloadUpdateChunk(chunkId) {
    // eslint-disable-line no-unused-vars
    var isWeex = typeof callNative === 'function';
    var updateFile = $require$.p + $hotChunkFilename$;
    if (isWeex) {
      fetch(updateFile, {
        method: 'GET',
        dataType: 'text',
        headers: {
          'Content-Type': 'text/javascript'
        }
      })
        .then(function(response) {
          return response.text();
        })
        .then(function(text) {
          eval(text);
        })
        .catch(function(err) {
          throw err;
        });
    } else {
      var head = document.getElementsByTagName('head')[0];
      var script = document.createElement('script');
      script.type = 'text/javascript';
      script.charset = 'utf-8';
      script.src = updateFile;
      head.appendChild(script);
    }
  }

  function hotDownloadManifest() {
    // eslint-disable-line no-unused-vars
    return new Promise(function(resolve, reject) {
      if (typeof XMLHttpRequest === 'undefined')
        return reject(new Error('No browser support jsonp'));
      try {
        var request = new XMLHttpRequest();
        var requestPath = $require$.p + $hotMainFilename$;
        request.open('GET', requestPath, true);
        request.timeout = 10000;
        request.send(null);
      } catch (err) {
        return reject(err);
      }
      request.onreadystatechange = function() {
        if (request.readyState !== 4) return;
        if (request.status === 0) {
          // timeout
          reject(new Error('Manifest request to ' + requestPath + ' timed out.'));
        } else if (request.status === 404) {
          // no update available
          resolve();
        } else if (request.status !== 200 && request.status !== 304) {
          // other failure
          reject(new Error('Manifest request to ' + requestPath + ' failed.'));
        } else {
          // success
          try {
            var update = JSON.parse(request.responseText);
          } catch (e) {
            reject(e);
            return;
          }
          resolve(update);
        }
      };
    });
  }
};