util: make TextEncoder/TextDecoder global

Fixes: #20365

PR-URL: #22281
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

Author: jasnell

.eslintrc.js

@@ -271,6 +271,8 @@ module.exports = {
     DTRACE_HTTP_SERVER_REQUEST: false,
     DTRACE_HTTP_SERVER_RESPONSE: false,
     DTRACE_NET_SERVER_CONNECTION: false,
-    DTRACE_NET_STREAM_END: false
+    DTRACE_NET_STREAM_END: false,
+    TextEncoder: false,
+    TextDecoder: false
   },
 };

doc/api/errors.md

@@ -794,13 +794,13 @@ The stack trace is extended to include the point in time at which the
 <a id="ERR_ENCODING_INVALID_ENCODED_DATA"></a>
 ### ERR_ENCODING_INVALID_ENCODED_DATA
 
-Data provided to `util.TextDecoder()` API was invalid according to the encoding
+Data provided to `TextDecoder()` API was invalid according to the encoding
 provided.
 
 <a id="ERR_ENCODING_NOT_SUPPORTED"></a>
 ### ERR_ENCODING_NOT_SUPPORTED
 
-Encoding provided to `util.TextDecoder()` API was not one of the
+Encoding provided to `TextDecoder()` API was not one of the
 [WHATWG Supported Encodings][].
 
 <a id="ERR_FALSY_VALUE_REJECTION"></a>

doc/api/globals.md

@@ -138,6 +138,25 @@ added: v0.0.1
 
 [`setTimeout`] is described in the [timers][] section.
 
+## TextDecoder
+<!-- YAML
+added: REPLACEME
+-->
+
+<!-- type=global -->
+
+The WHATWG `TextDecoder` class. See the [`TextDecoder`][] section.
+
+## TextEncoder
+<!-- YAML
+added: REPLACEME
+-->
+
+<!-- type=global -->
+
+The WHATWG `TextEncoder` class. See the [`TextEncoder`][] section.
+
+
 ## URL
 <!-- YAML
 added: v10.0.0
@@ -169,6 +188,8 @@ The WHATWG `URLSearchParams` class. See the [`URLSearchParams`][] section.
 [`setImmediate`]: timers.html#timers_setimmediate_callback_args
 [`setInterval`]: timers.html#timers_setinterval_callback_delay_args
 [`setTimeout`]: timers.html#timers_settimeout_callback_delay_args
+[`TextDecoder`]: util.html#util_class_util_textdecoder
+[`TextEncoder`]: util.html#util_class_util_textencoder
 [`URL`]: url.html#url_class_url
 [`URLSearchParams`]: url.html#url_class_urlsearchparams
 [buffer section]: buffer.html

doc/api/util.md

@@ -878,6 +878,13 @@ The `'iso-8859-16'` encoding listed in the [WHATWG Encoding Standard][]
 is not supported.
 
 ### new TextDecoder([encoding[, options]])
+<!-- YAML
+added: v8.3.0
+changes:
+  - version: REPLACEME
+    pr-url: REPLACEME
+    description: The class is now available on the global object.
+-->
 
 * `encoding` {string} Identifies the `encoding` that this `TextDecoder` instance
   supports. **Default:** `'utf-8'`.
@@ -893,6 +900,8 @@ is not supported.
 Creates an new `TextDecoder` instance. The `encoding` may specify one of the
 supported encodings or an alias.
 
+The `TextDecoder` class is also available on the global object.
+
 ### textDecoder.decode([input[, options]])
 
 * `input` {ArrayBuffer|DataView|TypedArray} An `ArrayBuffer`, `DataView` or
@@ -932,6 +941,10 @@ mark.
 ## Class: util.TextEncoder
 <!-- YAML
 added: v8.3.0
+changes:
+  - version: REPLACEME
+    pr-url: REPLACEME
+    description: The class is now available on the global object.
 -->
 
 An implementation of the [WHATWG Encoding Standard][] `TextEncoder` API. All
@@ -942,6 +955,8 @@ const encoder = new TextEncoder();
 const uint8array = encoder.encode('this is some data');
 ```
 
+The `TextEncoder` class is also available on the global object.
+
 ### textEncoder.encode([input])
 
 * `input` {string} The text to encode. **Default:** an empty string.

lib/internal/bootstrap/node.js

@@ -127,6 +127,7 @@
       setupGlobalTimeouts();
       setupGlobalConsole();
       setupGlobalURL();
+      setupGlobalEncoding();
     }
 
     if (process.binding('config').experimentalWorker) {
@@ -476,6 +477,24 @@
     });
   }
 
+  function setupGlobalEncoding() {
+    const { TextEncoder, TextDecoder } = NativeModule.require('util');
+    Object.defineProperties(global, {
+      TextEncoder: {
+        value: TextEncoder,
+        writable: true,
+        configurable: true,
+        enumerable: false
+      },
+      TextDecoder: {
+        value: TextDecoder,
+        writable: true,
+        configurable: true,
+        enumerable: false
+      }
+    });
+  }
+
   function setupDOMException() {
     // Registers the constructor with C++.
     NativeModule.require('internal/domexception');

test/parallel/test-global-encoder.js

@@ -0,0 +1,8 @@
+'use strict';
+
+require('../common');
+const { strictEqual } = require('assert');
+const util = require('util');
+
+strictEqual(TextDecoder, util.TextDecoder);
+strictEqual(TextEncoder, util.TextEncoder);

test/parallel/test-whatwg-encoding-fatal-streaming.js

@@ -8,10 +8,6 @@ if (!common.hasIntl)
   common.skip('missing Intl');
 
 const assert = require('assert');
-const {
-  TextDecoder
-} = require('util');
-
 
 {
   [

test/parallel/test-whatwg-encoding-surrogates-utf8.js

@@ -5,10 +5,6 @@
 require('../common');
 
 const assert = require('assert');
-const {
-  TextDecoder,
-  TextEncoder
-} = require('util');
 
 const badStrings = [
   {

test/parallel/test-whatwg-encoding-textdecoder-fatal.js

@@ -8,9 +8,6 @@ if (!common.hasIntl)
   common.skip('missing Intl');
 
 const assert = require('assert');
-const {
-  TextDecoder
-} = require('util');
 
 const bad = [
   { encoding: 'utf-8', input: [0xFF], name: 'invalid code' },

test/parallel/test-whatwg-encoding-textdecoder-ignorebom.js

@@ -5,9 +5,6 @@
 const common = require('../common');
 
 const assert = require('assert');
-const {
-  TextDecoder
-} = require('util');
 
 const cases = [
   {