src/demux/webworkify-webpack.js

/*
 * Fork of webworkify-webpack with support for Webpack 5
 * https://github.com/wupeng-engineer/webworkify-webpack/blob/db0de7/index.js
*/

const webpackBootstrapFunc = function () {// webpackBootstrap
  /******/ 	var __webpack_modules__ = ENTRY_MODULE
  /************************************************************************/
  /******/  // The module cache
  /******/  var __webpack_module_cache__ = {};
  /******/  
  /******/  // The require function
  /******/  var __webpack_require__ = function __webpack_require__(moduleId) {
  /******/    // Check if module is in cache
  /******/    var cachedModule = __webpack_module_cache__[moduleId];
  /******/    if (cachedModule !== undefined) {
  /******/      return cachedModule.exports;
  /******/    }
  /******/    // Create a new module (and put it into the cache)
  /******/    var module = __webpack_module_cache__[moduleId] = {
  /******/      // no module.id needed
  /******/      // no module.loaded needed
  /******/      exports: {}
  /******/    };
  /******/  
  /******/    // Execute the module function
  /******/    __webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);
  /******/  
  /******/    // Return the exports of the module
  /******/    return module.exports;
  /******/  }
  /******/  
  /******/  // expose the modules object (__webpack_modules__)
  /******/  __webpack_require__.m = __webpack_modules__;
  /******/  
  /************************************************************************/
  /******/  /* webpack/runtime/compat get default export */
  /******/  (() => {
  /******/    // getDefaultExport function for compatibility with non-harmony modules
  /******/    __webpack_require__.n = (module) => {
  /******/      var getter = module && module.__esModule ?
  /******/        () => (module['default']) :
  /******/        () => (module);
  /******/      __webpack_require__.d(getter, { a: getter });
  /******/      return getter;
  /******/    };
  /******/  })();
  /******/  
  /******/  /* webpack/runtime/define property getters */
  /******/  (() => {
  /******/    // define getter functions for harmony exports
  /******/    __webpack_require__.d = (exports, definition) => {
  /******/      for(var key in definition) {
  /******/        if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
  /******/          Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
  /******/        }
  /******/      }
  /******/    };
  /******/  })();
  /******/  
  /******/  /* webpack/runtime/hasOwnProperty shorthand */
  /******/  (() => {
  /******/    __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
  /******/  })();
  /******/  
  /******/  /* webpack/runtime/make namespace object */
  /******/  (() => {
  /******/    // define __esModule on exports
  /******/    __webpack_require__.r = (exports) => {
  /******/      if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
  /******/        Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
  /******/      }
  /******/      Object.defineProperty(exports, '__esModule', { value: true });
  /******/    };
  /******/  })();
  /******/  
  /************************************************************************/
  /******/  
  /******/  // module factories are used so entry inlining is disabled
  /******/  // startup
  /******/  // Load entry module and return exports
  /******/ 	var result = __webpack_require__(ENTRY_MODULE)
  /******/  return result.default || result
}

var webpackBootstrapFuncArr = webpackBootstrapFunc.toString().split('ENTRY_MODULE');
var moduleNameReqExp = '[\\.|\\-|\\+|\\w|\/|@]+';
var dependencyRegExp = '\\(\\s*(\/\\*.*?\\*\/)?\\s*.*?(' + moduleNameReqExp + ').*?\\)';

function quoteRegExp(str) {
  return (str + '').replace(/[.?*+^$[\]\\(){}|-]/g, '\\$&');
}

function isNumeric(n) {
  return !isNaN(1 * n);
}

function getModuleDependencies(sources, module, queueName) {
  var retval = {};
  retval[queueName] = [];
  var fnString = module.toString().replace(/^"[^"]+"/,'function');;
  var wrapperSignature = fnString.match(/^function\s?\w*\(\w+,\s*\w+,\s*(\w+)\)/) || fnString.match(/^\(\w+,\s*\w+,\s*(\w+)\)\s?\=\s?\>/);
  if (!wrapperSignature) return retval;
  var webpackRequireName = wrapperSignature[1];
  var re = new RegExp('(\\\\n|\\W)' + quoteRegExp(webpackRequireName) + dependencyRegExp, 'g');
  var match;
  while ((match = re.exec(fnString))) {
    if (match[3] === 'dll-reference') continue;
    retval[queueName].push(match[3]);
  }
  re = new RegExp('\\(' + quoteRegExp(webpackRequireName) + '\\("(dll-reference\\s(' + moduleNameReqExp + '))"\\)\\)' + dependencyRegExp, 'g');
  while ((match = re.exec(fnString))) {
    if (!sources[match[2]]) {
      retval[queueName].push(match[1]);
      sources[match[2]] = __webpack_require__(match[1]).m;
    }
    retval[match[2]] = retval[match[2]] || [];
    retval[match[2]].push(match[4]);
  }
  var keys = Object.keys(retval);
  for (var i = 0; i < keys.length; i++) {
    for (var j = 0; j < retval[keys[i]].length; j++) {
      if (isNumeric(retval[keys[i]][j])) {
        retval[keys[i]][j] = 1 * retval[keys[i]][j];
      }
    }
  }
  return retval;
}

function hasValuesInQueues(queues) {
  var keys = Object.keys(queues);
  return keys.reduce((hasValues, key) => hasValues || queues[key].length > 0, false);
}

function getRequiredModules(sources, moduleId) {
  var modulesQueue = {
    main: [moduleId]
  };
  var requiredModules = {
    main: []
  };
  var seenModules = {
    main: {}
  };
  while (hasValuesInQueues(modulesQueue)) {
    var queues = Object.keys(modulesQueue);
    for (var i = 0; i < queues.length; i++) {
      var queueName = queues[i];
      var queue = modulesQueue[queueName];
      var moduleToCheck = queue.pop();
      seenModules[queueName] = seenModules[queueName] || {};
      if (seenModules[queueName][moduleToCheck] || !sources[queueName][moduleToCheck]) continue;
      seenModules[queueName][moduleToCheck] = true;
      requiredModules[queueName] = requiredModules[queueName] || [];
      requiredModules[queueName].push(moduleToCheck);
      var newModules = getModuleDependencies(sources, sources[queueName][moduleToCheck], queueName);
      var newModulesKeys = Object.keys(newModules);
      for (var j = 0; j < newModulesKeys.length; j++) {
        modulesQueue[newModulesKeys[j]] = modulesQueue[newModulesKeys[j]] || [];
        modulesQueue[newModulesKeys[j]] = modulesQueue[newModulesKeys[j]].concat(newModules[newModulesKeys[j]]);
      }
    }
  }
  return requiredModules;
}

function getWebpackString(requiredModules, sources, entryModule, key) {
  const moduleString = requiredModules[key].map((id) => `"${id}": ${sources[key][id].toString().replace(/^"[^"]+"/,'function')}`).join(",");
  return `${webpackBootstrapFuncArr[0]}{${moduleString}}${webpackBootstrapFuncArr[1]}"${entryModule}"${webpackBootstrapFuncArr[2]}`;
}

export default function (moduleId, options) {
  options = options || {};
  var sources = {
    main: __webpack_modules__
  };
  var requiredModules = options.all ? { main: Object.keys(sources.main) } : getRequiredModules(sources, moduleId);
  var src = '';
  Object.keys(requiredModules).filter((m) => m !== 'main').forEach((module) => {
    var entryModule = 0;
    while (requiredModules[module][entryModule]) {
      entryModule++;
    }
    requiredModules[module].push(entryModule);
    sources[module][entryModule] = '(function(module, exports, __webpack_require__) { module.exports = __webpack_require__; })';
    src = src + `var ${module} = (${getWebpackString(requiredModules, sources, entryModule, modules)})();\n`;
  });
  src = src + `new ((${getWebpackString(requiredModules, sources, moduleId, 'main')})())(self);`;
  var blob = new window.Blob([src], {
    type: 'text/javascript'
  });
  var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
  var workerUrl = URL.createObjectURL(blob);
  var worker = new window.Worker(workerUrl);
  worker.objectURL = workerUrl;
  return worker;
}