Function cjsEmplaceModuleCacheEntry

lib/internal/modules/esm/translators.js:398–412

* Get or create an entry in the CJS module cache for the given filename. * @param {string} filename CJS module filename * @param {CJSModule} parent The parent CJS module * @returns {CJSModule} the cached CJS module entry

(filename, parent)

 * @returns {CJSModule} the cached CJS module entry
 */
function cjsEmplaceModuleCacheEntry(filename, parent) {
  // TODO: Do we want to keep hitting the user mutable CJS loader here?
  let cjsMod = CJSModule._cache[filename];
  if (cjsMod) {
    return cjsMod;
  }

  cjsMod = new CJSModule(filename, parent);
  cjsMod.filename = filename;
  cjsMod.paths = CJSModule._nodeModulePaths(cjsMod.path);
  cjsMod[kIsCachedByESMLoader] = true;
  CJSModule._cache[filename] = cjsMod;

  return cjsMod;
}

/**
 * Pre-parses a CommonJS module's exports and re-exports.