lib: cache process.binding(…) wrappers in loaders.js

Author: ExE-Boss

lib/internal/bootstrap/loaders.js

@@ -136,13 +136,17 @@ const legacyWrapperList = new SafeSet([
           'DEP0111');
       }
       if (legacyWrapperList.has(module)) {
-        return nativeModuleRequire('internal/legacy/processbinding')[module]();
+        return bindingObj[module] ??= nativeModuleRequire('internal/legacy/processbinding')[module]();
       }
       return internalBinding(module);
     }
     // eslint-disable-next-line no-restricted-syntax
     throw new Error(`No such module: ${module}`);
   };
+}
+
+{
+  const bindingObj = ObjectCreate(null);
 
   process._linkedBinding = function _linkedBinding(module) {
     module = String(module);

lib/internal/legacy/processbinding.js

@@ -2,14 +2,13 @@
 const {
   ArrayPrototypeFilter,
   ArrayPrototypeIncludes,
-  ArrayPrototypeMap,
   ObjectFromEntries,
   ObjectEntries,
   SafeArrayIterator,
 } = primordials;
 const types = require('internal/util/types');
 
-const factories = {
+module.exports = {
   util() {
     return ObjectFromEntries(new SafeArrayIterator(ArrayPrototypeFilter(
       ObjectEntries(types),
@@ -35,17 +34,3 @@ const factories = {
       })));
   }
 };
-
-module.exports = ObjectFromEntries(
-  new SafeArrayIterator(
-    ArrayPrototypeMap(ObjectEntries(factories), ({ 0: key, 1: factory }) => {
-      let result;
-      return [key, () => {
-        if (!result) {
-          result = factory();
-        }
-        return result;
-      }];
-    }),
-  ),
-);