Chunk loader function with complex logic won't be run

[e4ac]

If a chunk loader contains complex logic it will not be run. For example:

function loader(chunkId) {
  return __webpack_require__.p + "" + ({ "1": "chunk1", "2": "chunk2" }[chunkId] || chunkId) + ".js";
}

Looks simple enough. However, This __webpack_require__.p is generated by:

var scriptUrl;
if (__webpack_require__.g.importScripts) scriptUrl = __webpack_require__.g.location + "";
var document = __webpack_require__.g.document;
if (!scriptUrl && document) {
  if (document.currentScript && document.currentScript.tagName.toUpperCase() === 'SCRIPT')
    scriptUrl = document.currentScript.src;
  if (!scriptUrl) {
    var scripts = document.getElementsByTagName("script");
    if(scripts.length) {
      var i = scripts.length - 1;
      while (i > -1 && (!scriptUrl || !/^http(s?):/.test(scriptUrl))) scriptUrl = scripts[i--].src;
    }
  }
}
if (!scriptUrl) throw new Error("Automatic publicPath is not supported in this browser");
scriptUrl = scriptUrl.replace(/#.*$/, "").replace(/\?.*$/, "").replace(/\/[^\/]+$/, "/");
__webpack_require__.p = scriptUrl;

Which is pretty complex, involving lots of other members.

Currently, the algorithm can only handle simple hardcoded values, such as __webpack_require__.p = "value" and cannot perform more complex logic like the example above.

[e4ac]

The fix for this issue will not be trivial. When running the chunk loader to retrieve the chunk names the JS runner (JINT) will need to run the entire JS script. There are also cases where the script references another script, and if not present there will be errors.