[RFC] perf: use an internal module resolver to improve require performance (#14633)

* perf: use an internal module resolver instead of relative requires

* perf: memoize the results of getting exported Electron properties

* perf: make internal module changes consistent across sandboxed / bundled files

lib/common/api/exports/electron.js

@@ -1,13 +1,29 @@
-const moduleList = require('../module-list')
+const moduleList = require('@electron/internal/common/api/module-list')
 
-// Attaches properties to |exports|.
-exports.defineProperties = function (exports) {
+exports.memoizedGetter = (getter) => {
+  /*
+   * It's ok to leak this value as it would be leaked by the global
+   * node module cache anyway at `Module._cache`.  This memoization
+   * is dramatically faster than relying on nodes module cache however
+   */
+  let memoizedValue = null
+
+  return () => {
+    if (memoizedValue === null) {
+      memoizedValue = getter()
+    }
+    return memoizedValue
+  }
+}
+
+// Attaches properties to |targetExports|.
+exports.defineProperties = function (targetExports) {
   const descriptors = {}
   for (const module of moduleList) {
     descriptors[module.name] = {
       enumerable: !module.private,
-      get: () => require(`../${module.file}`)
+      get: exports.memoizedGetter(() => require(`@electron/internal/common/api/${module.file}`))
     }
   }
-  return Object.defineProperties(exports, descriptors)
+  return Object.defineProperties(targetExports, descriptors)
 }