From 01a71dd3935beda7a4672227b6447bf848be4326 Mon Sep 17 00:00:00 2001
From: raisinten <raisinten@gmail.com>
Date: Fri, 11 Dec 2020 20:04:02 +0530
Subject: [PATCH] lib: refactor to use more primordials in internal/encoding.js
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PR-URL: https://github.com/nodejs/node/pull/36480
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Pooja D P <Pooja.D.P@ibm.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
---
 lib/internal/encoding.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/internal/encoding.js b/lib/internal/encoding.js
index 8cc9bc13fbb343..17d83cc6b26c67 100644
--- a/lib/internal/encoding.js
+++ b/lib/internal/encoding.js
@@ -4,10 +4,11 @@
 // https://encoding.spec.whatwg.org
 
 const {
-  Map,
   ObjectCreate,
   ObjectDefineProperties,
   ObjectGetOwnPropertyDescriptors,
+  SafeMap,
+  StringPrototypeSlice,
   Symbol,
   SymbolToStringTag,
   Uint32Array,
@@ -74,7 +75,7 @@ const CONVERTER_FLAGS_IGNORE_BOM = 0x4;
 
 const empty = new Uint8Array(0);
 
-const encodings = new Map([
+const encodings = new SafeMap([
   ['unicode-1-1-utf-8', 'utf-8'],
   ['utf8', 'utf-8'],
   ['utf-8', 'utf-8'],
@@ -309,7 +310,7 @@ function trimAsciiWhitespace(label) {
     label[e - 1] === '\u0020')) {
     e--;
   }
-  return label.slice(s, e);
+  return StringPrototypeSlice(label, s, e);
 }
 
 function getEncodingFromLabel(label) {
@@ -504,7 +505,7 @@ function makeTextDecoderJS() {
         // If the very first result in the stream is a BOM, and we are not
         // explicitly told to ignore it, then we discard it.
         if (result[0] === '\ufeff') {
-          result = result.slice(1);
+          result = StringPrototypeSlice(result, 1);
         }
         this[kBOMSeen] = true;
       }