lib: move encodingsMap to internal/util

PR-URL: #51044 Refs: nodejs/performance#136 Reviewed-By: Vinícius Lourenço Claro Cardoso <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>

Author: joyeecheung

lib/buffer.js

@@ -85,6 +85,7 @@ const{
  normalizeEncoding,
  kIsEncodingSymbol,
  defineLazyProperties,
+ encodingsMap,
 }=require('internal/util');
 const{
  isAnyArrayBuffer,
@@ -95,7 +96,6 @@ const{
 const{
 inspect: utilInspect,
 }=require('internal/util/inspect');
-const{ encodings }=internalBinding('string_decoder');
 
 const{
 codes: {
@@ -149,10 +149,6 @@ const constants = ObjectDefineProperties({},{
 Buffer.poolSize=8*1024;
 letpoolSize,poolOffset,allocPool;
 
-constencodingsMap={__proto__: null};
-for(leti=0;i<encodings.length;++i)
-encodingsMap[encodings[i]]=i;
-
 functioncreatePool(){
 poolSize=Buffer.poolSize;
 allocPool=createUnsafeBuffer(poolSize).buffer;

lib/internal/util.js

@@ -65,6 +65,7 @@ const{
 }=internalBinding('util');
 const{ isNativeError, isPromise }=internalBinding('types');
 const{ getOptionValue }=require('internal/options');
+const{ encodings }=internalBinding('string_decoder');
 
 constnoCrypto=!process.versions.openssl;
 
@@ -859,6 +860,10 @@ class WeakReference{
 }
 }
 
+constencodingsMap={__proto__: null};
+for(leti=0;i<encodings.length;++i)
+encodingsMap[encodings[i]]=i;
+
 module.exports={
  getLazy,
  assertCrypto,
@@ -872,6 +877,7 @@ module.exports ={
  defineReplaceableLazyAttribute,
  deprecate,
  emitExperimentalWarning,
+ encodingsMap,
  exposeInterface,
  exposeLazyInterfaces,
  exposeNamespace,

lib/string_decoder.js

@@ -38,15 +38,18 @@ const{
  kSize,
  decode,
  flush,
- encodings,
 }=internalBinding('string_decoder');
-constinternalUtil=require('internal/util');
+const{
+ kIsEncodingSymbol,
+ encodingsMap,
+normalizeEncoding: _normalizeEncoding,
+}=require('internal/util');
 const{
 ERR_INVALID_ARG_TYPE,
 ERR_INVALID_THIS,
 ERR_UNKNOWN_ENCODING,
 }=require('internal/errors').codes;
-constisEncoding=Buffer[internalUtil.kIsEncodingSymbol];
+constisEncoding=Buffer[kIsEncodingSymbol];
 
 constkNativeDecoder=Symbol('kNativeDecoder');
 
@@ -60,7 +63,7 @@ const kNativeDecoder = Symbol('kNativeDecoder');
  * @throws{TypeError} Throws an error when encoding is invalid
  */
 functionnormalizeEncoding(enc){
-constnenc=internalUtil.normalizeEncoding(enc);
+constnenc=_normalizeEncoding(enc);
 if(nenc===undefined){
 if(Buffer.isEncoding===isEncoding||!Buffer.isEncoding(enc))
 thrownewERR_UNKNOWN_ENCODING(enc);
@@ -69,10 +72,6 @@ function normalizeEncoding(enc){
 returnnenc;
 }
 
-constencodingsMap={};
-for(leti=0;i<encodings.length;++i)
-encodingsMap[encodings[i]]=i;
-
 /**
  * StringDecoder provides an interface for efficiently splitting a series of
  * buffers into a series of JS strings without breaking apart multi-byte