Reuse VM context across webpack magic comments

lib/javascript/JavascriptParser.js

@@ -435,6 +435,10 @@ class JavascriptParser extends Parser {
  /** @type {WeakMap<Expression, Set<string>> | undefined} */
  this.destructuringAssignmentProperties = undefined;
  this.currentTagData = undefined;
+ this.magicCommentContext = vm.createContext(undefined, {
+ name: "Webpack Magic Comment Parser",
+ codeGeneration: { strings: false, wasm: false }
+ });
  this._initializeEvaluating();
  }
 
@@ -4465,7 +4469,10 @@ class JavascriptParser extends Parser {
  // try compile only if webpack options comment is present
  try {
  for (let [key, val] of Object.entries(
- vm.runInNewContext(`(function(){return {${value}};})()`)
+ vm.runInContext(
+ `(function(){return {${value}};})()`,
+ this.magicCommentContext
+ )
  )) {
  if (typeof val === "object" && val !== null) {
  if (val.constructor.name === "RegExp") val = new RegExp(val);