util: remove unused functions

lib/internal/util.js

@@ -17,7 +17,6 @@ const {
   ObjectGetOwnPropertyDescriptors,
   ObjectGetPrototypeOf,
   ObjectKeys,
-  ObjectPrototypeHasOwnProperty,
   ObjectSetPrototypeOf,
   ObjectValues,
   Promise,
@@ -354,26 +353,6 @@ function cachedResult(fn) {
   };
 }
 
-// Useful for Wrapping an ES6 Class with a constructor Function that
-// does not require the new keyword. For instance:
-//   class A { constructor(x) {this.x = x;}}
-//   const B = createClassWrapper(A);
-//   B() instanceof A // true
-//   B() instanceof B // true
-function createClassWrapper(type) {
-  function fn(...args) {
-    return ReflectConstruct(type, args, new.target || type);
-  }
-  // Mask the wrapper function name and length values
-  ObjectDefineProperties(fn, {
-    name: { __proto__: null, value: type.name },
-    length: { __proto__: null, value: type.length },
-  });
-  ObjectSetPrototypeOf(fn, type);
-  fn.prototype = type.prototype;
-  return fn;
-}
-
 let signalsToNamesMapping;
 function getSignalsToNamesMapping() {
   if (signalsToNamesMapping !== undefined)
@@ -649,16 +628,6 @@ function exposeNamespace(target, name, namespaceObject) {
   });
 }
 
-function exposeGetterAndSetter(target, name, getter, setter = undefined) {
-  ObjectDefineProperty(target, name, {
-    __proto__: null,
-    enumerable: false,
-    configurable: true,
-    get: getter,
-    set: setter,
-  });
-}
-
 function defineReplaceableLazyAttribute(target, id, keys, writable = true, check) {
   let mod;
   for (let i = 0; i < keys.length; i++) {
@@ -732,18 +701,6 @@ ObjectFreeze(kEnumerableProperty);
 
 const kEmptyObject = ObjectFreeze({ __proto__: null });
 
-function filterOwnProperties(source, keys) {
-  const filtered = { __proto__: null };
-  for (let i = 0; i < keys.length; i++) {
-    const key = keys[i];
-    if (ObjectPrototypeHasOwnProperty(source, key)) {
-      filtered[key] = source[key];
-    }
-  }
-
-  return filtered;
-}
-
 /**
  * Mimics `obj[key] = value` but ignoring potential prototype inheritance.
  * @param {any} obj
@@ -976,7 +933,6 @@ module.exports = {
   constructSharedArrayBuffer,
   convertProcessSignalToExitCode,
   convertToValidSignal,
-  createClassWrapper,
   decorateErrorStack,
   defineOperation,
   defineLazyProperties,
@@ -989,13 +945,10 @@ module.exports = {
   exposeInterface,
   exposeLazyInterfaces,
   exposeNamespace,
-  exposeGetterAndSetter,
   filterDuplicateStrings,
-  filterOwnProperties,
   getConstructorOf,
   getCIDR,
   getCWDURL,
-  getInternalGlobal,
   getStructuredStack,
   getSystemErrorMap,
   getSystemErrorName,