util: graduate TextEncoder/TextDecoder, tests

Add tests ported from Web Platform Tests.

Graduate TextEncoder / TextDecoder from experimental

PR-URL: https://github.com/nodejs/node/pull/15743
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>

1 files changed, 0 insertions, 20 deletions

diff --git a/lib/internal/encoding.js b/lib/internal/encoding.js
index 5c2e2072587..09242be8dcf 100644
--- a/lib/internal/encoding.js
+++ b/lib/internal/encoding.js
@@ -10,11 +10,6 @@ const kEncoding = Symbol('encoding');
 const kDecoder = Symbol('decoder');
 const kEncoder = Symbol('encoder');
 
-let warned = false;
-const experimental =
-  'The WHATWG Encoding Standard implementation is an experimental API. It ' +
-  'should not yet be used in production applications.';
-
 const {
   getConstructorOf,
   customInspectSymbol: inspect
@@ -289,11 +284,6 @@ function getEncodingFromLabel(label) {
 
 class TextEncoder {
   constructor() {
-    if (!warned) {
-      warned = true;
-      process.emitWarning(experimental, 'ExperimentalWarning');
-    }
-
     this[kEncoder] = true;
   }
 
@@ -353,11 +343,6 @@ function makeTextDecoderICU() {
 
   class TextDecoder {
     constructor(encoding = 'utf-8', options = {}) {
-      if (!warned) {
-        warned = true;
-        process.emitWarning(experimental, 'ExperimentalWarning');
-      }
-
       encoding = `${encoding}`;
       if (typeof options !== 'object')
         throw new errors.Error('ERR_INVALID_ARG_TYPE', 'options', 'object');
@@ -430,11 +415,6 @@ function makeTextDecoderJS() {
 
   class TextDecoder {
     constructor(encoding = 'utf-8', options = {}) {
-      if (!warned) {
-        warned = true;
-        process.emitWarning(experimental, 'ExperimentalWarning');
-      }
-
       encoding = `${encoding}`;
       if (typeof options !== 'object')
         throw new errors.Error('ERR_INVALID_ARG_TYPE', 'options', 'object');