util: extract uncurryThis function for reuse

nodejs · ZYSzys · Mar 19, 2019 · Mar 19, 2019 · Mar 19, 2019 · 7dcf9bd9c4fab91a9cfd1b14cc7db47b87900fbe
commit 7dcf9bd9c4fab91a9cfd1b14cc7db47b87900fbe
diff --git a/lib/internal/util.js b/lib/internal/util.js
@@ -385,6 +385,17 @@ function once(callback) {
   };
 }
 
+const ReflectApply = Reflect.apply;
+
+// This function is borrowed from the function with the same name on V8 Extras'
+// `utils` object. V8 implements Reflect.apply very efficiently in conjunction
+// with the spread syntax, such that no additional special case is needed for
+// function calls w/o arguments.
+// Refs: https://github.com/v8/v8/blob/d6ead37d265d7215cf9c5f768f279e21bd170212/src/js/prologue.js#L152-L156
+function uncurryThis(func) {
+  return (thisArg, ...args) => ReflectApply(func, thisArg, args);
+}
+
 module.exports = {
   assertCrypto,
   cachedResult,
@@ -405,6 +416,7 @@ module.exports = {
   promisify,
   spliceOne,
   removeColors,
+  uncurryThis,
 
   // Symbol used to customize promisify conversion
   customPromisifyArgs: kCustomPromisifyArgsSymbol,

diff --git a/lib/internal/util/comparisons.js b/lib/internal/util/comparisons.js
@@ -24,12 +24,7 @@ const {
     ONLY_ENUMERABLE
   }
 } = internalBinding('util');
-
-const ReflectApply = Reflect.apply;
-
-function uncurryThis(func) {
-  return (thisArg, ...args) => ReflectApply(func, thisArg, args);
-}
+const { uncurryThis } = require('internal/util');
 
 const kStrict = true;
 const kLoose = false;

diff --git a/lib/internal/util/inspect.js b/lib/internal/util/inspect.js
@@ -17,7 +17,8 @@ const {
   customInspectSymbol,
   isError,
   join,
-  removeColors
+  removeColors,
+  uncurryThis
 } = require('internal/util');
 
 const {
@@ -68,17 +69,6 @@ const assert = require('internal/assert');
 // Avoid monkey-patched built-ins.
 const { Object } = primordials;
 
-const ReflectApply = Reflect.apply;
-
-// This function is borrowed from the function with the same name on V8 Extras'
-// `utils` object. V8 implements Reflect.apply very efficiently in conjunction
-// with the spread syntax, such that no additional special case is needed for
-// function calls w/o arguments.
-// Refs: https://github.com/v8/v8/blob/d6ead37d265d7215cf9c5f768f279e21bd170212/src/js/prologue.js#L152-L156
-function uncurryThis(func) {
-  return (thisArg, ...args) => ReflectApply(func, thisArg, args);
-}
-
 const propertyIsEnumerable = uncurryThis(Object.prototype.propertyIsEnumerable);
 const regExpToString = uncurryThis(RegExp.prototype.toString);
 const dateToISOString = uncurryThis(Date.prototype.toISOString);

diff --git a/lib/internal/util/types.js b/lib/internal/util/types.js
@@ -1,15 +1,6 @@
 'use strict';
 
-const ReflectApply = Reflect.apply;
-
-// This function is borrowed from the function with the same name on V8 Extras'
-// `utils` object. V8 implements Reflect.apply very efficiently in conjunction
-// with the spread syntax, such that no additional special case is needed for
-// function calls w/o arguments.
-// Refs: https://github.com/v8/v8/blob/d6ead37d265d7215cf9c5f768f279e21bd170212/src/js/prologue.js#L152-L156
-function uncurryThis(func) {
-  return (thisArg, ...args) => ReflectApply(func, thisArg, args);
-}
+const { uncurryThis } = require('internal/util');
 
 const TypedArrayPrototype = Object.getPrototypeOf(Uint8Array.prototype);
 

diff --git a/lib/util.js b/lib/util.js
@@ -42,13 +42,9 @@ const {
   deprecate,
   getSystemErrorName: internalErrorName,
   promisify,
+  uncurryThis
 } = require('internal/util');
 
-const ReflectApply = Reflect.apply;
-
-function uncurryThis(func) {
-  return (thisArg, ...args) => ReflectApply(func, thisArg, args);
-}
 const objectToString = uncurryThis(Object.prototype.toString);
 
 let internalDeepEqual;