Bug 1811347 - Remove useless parameter from TextEncoder constructor r=emk,webdriver-reviewers,extension-reviewers,credential-management-reviewers,dimi,jdescottes,willdurand

Differential Revision: https://phabricator.services.mozilla.com/D167488

devtools/client/performance-new/profiler_get_symbols.js

@@ -46,7 +46,7 @@ function getUint8Memory0() {
     return cachedUint8Memory0;
 }
 
-const cachedTextEncoder = new TextEncoder('utf-8');
+const cachedTextEncoder = new TextEncoder();
 
 const encodeString = (typeof cachedTextEncoder.encodeInto === 'function'
     ? function (arg, view) {

dom/base/test/unit/test_chromeutils_base64.js

@@ -74,7 +74,7 @@ function test_base64URLEncode() {
     testEncode(decoded, encoded);
   }
 
-  let textEncoder = new TextEncoder("utf-8");
+  let textEncoder = new TextEncoder();
   for (let decoded of Object.keys(textTests)) {
     let input = textEncoder.encode(decoded);
     testEncode(input, textTests[decoded]);
@@ -132,7 +132,7 @@ function test_base64URLDecode() {
     testDecode(encoded, decoded);
   }
 
-  let textEncoder = new TextEncoder("utf-8");
+  let textEncoder = new TextEncoder();
   for (let decoded of Object.keys(textTests)) {
     let expectedBuffer = textEncoder.encode(decoded);
     testDecode(textTests[decoded], expectedBuffer);

dom/crypto/test/test-vectors.js

@@ -695,10 +695,8 @@ let tv = {
 
   // RFC 6070 <http://tools.ietf.org/html/rfc6070>
   pbkdf2_sha1: {
-    password: new TextEncoder("utf-8").encode("passwordPASSWORDpassword"),
-    salt: new TextEncoder("utf-8").encode(
-      "saltSALTsaltSALTsaltSALTsaltSALTsalt"
-    ),
+    password: new TextEncoder().encode("passwordPASSWORDpassword"),
+    salt: new TextEncoder().encode("saltSALTsaltSALTsaltSALTsaltSALTsalt"),
     iterations: 4096,
     length: 25 * 8,
 
@@ -712,10 +710,8 @@ let tv = {
 
   // https://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors
   pbkdf2_sha256: {
-    password: new TextEncoder("utf-8").encode("passwordPASSWORDpassword"),
-    salt: new TextEncoder("utf-8").encode(
-      "saltSALTsaltSALTsaltSALTsaltSALTsalt"
-    ),
+    password: new TextEncoder().encode("passwordPASSWORDpassword"),
+    salt: new TextEncoder().encode("saltSALTsaltSALTsaltSALTsaltSALTsalt"),
     iterations: 4096,
     length: 40 * 8,
 
@@ -739,9 +735,7 @@ let tv = {
 
   pbkdf2_sha256_no_pwd: {
     password: new Uint8Array(),
-    salt: new TextEncoder("utf-8").encode(
-      "saltSALTsaltSALTsaltSALTsaltSALTsalt"
-    ),
+    salt: new TextEncoder().encode("saltSALTsaltSALTsaltSALTsaltSALTsalt"),
     length: 32 * 8,
     iterations: 1,
 

dom/crypto/test/test_WebCrypto_PBKDF2.html

@@ -28,7 +28,7 @@ TestArray.addTest(
   function() {
     var that = this;
     var alg = "PBKDF2";
-    var key = new TextEncoder("utf-8").encode("password");
+    var key = new TextEncoder().encode("password");
 
     crypto.subtle.importKey("raw", key, alg, false, ["deriveKey"]).then(
       complete(that, hasKeyFields),
@@ -42,7 +42,7 @@ TestArray.addTest(
   "Unwrapping a PBKDF2 key in PKCS8 format should fail",
   function() {
     var that = this;
-    var pbkdf2Key = new TextEncoder("utf-8").encode("password");
+    var pbkdf2Key = new TextEncoder().encode("password");
     var alg = {name: "AES-GCM", length: 256, iv: new Uint8Array(16)};
     var wrappingKey;
 

dom/crypto/test/test_WebCrypto_Structured_Cloning.html

@@ -107,7 +107,7 @@ TestArray.addTest(
   "Structured Cloning: PBKDF2",
   function() {
     var that = this;
-    var key = new TextEncoder("utf-8").encode("password");
+    var key = new TextEncoder().encode("password");
 
     var alg = {
       name: "PBKDF2",
@@ -128,7 +128,7 @@ TestArray.addTest(
   "Structured Cloning: HKDF",
   function() {
     var that = this;
-    var key = new TextEncoder("utf-8").encode("password");
+    var key = new TextEncoder().encode("password");
 
     var alg = {
       name: "HKDF",

dom/crypto/test/test_WebCrypto_Wrap_Unwrap.html

@@ -385,7 +385,7 @@ TestArray.addTest(
     var wrapKey;
 
     function doBogusWrap() {
-      var abv = new TextEncoder("utf-8").encode("I am so not JSON");
+      var abv = new TextEncoder().encode("I am so not JSON");
       return crypto.subtle.encrypt(wrapAlg, wrapKey, abv);
     }
     function doUnwrap(wrappedKey) {

dom/encoding/test/unit/test_misc.js

@@ -11,7 +11,7 @@ test(function() {
   ];
 
   badStrings.forEach(function(t) {
-    var encoded = new TextEncoder("utf-8").encode(t.input);
+    var encoded = new TextEncoder().encode(t.input);
     var decoded = new TextDecoder("utf-8").decode(encoded);
     assert_equals(t.expected, decoded);
   });
@@ -323,7 +323,7 @@ test(function() {
         0xff,
       ],
     };
-    var encoded = octets[encoding] || new TextEncoder(encoding).encode(string);
+    var encoded = octets[encoding] || new TextEncoder().encode(string);
 
     for (var len = 1; len <= 5; ++len) {
       var out = "",
@@ -406,13 +406,13 @@ test(function() {
       string += String.fromCharCode(i);
       bytes.push(i);
     }
-    var ascii_encoded = new TextEncoder("utf-8").encode(string);
+    var ascii_encoded = new TextEncoder().encode(string);
     assert_equals(
       new TextDecoder(encoding).decode(ascii_encoded),
       string,
       encoding
     );
-    //assert_array_equals(new TextEncoder(encoding).encode(string), bytes, encoding);
+    //assert_array_equals(new TextEncoder().encode(string), bytes, encoding);
   });
 }, "Supersets of ASCII decode ASCII correctly");
 

dom/media/PeerConnection.jsm

@@ -1678,7 +1678,7 @@ class RTCPeerConnection {
       // At least 65536/2 UTF-16 characters. UTF-8 might be too long.
       // Spec says to check how long |protocol| and |label| are in _bytes_. This
       // is a little ambiguous. For now, examine the length of the utf-8 encoding.
-      const byteCounter = new TextEncoder("utf-8");
+      const byteCounter = new TextEncoder();
 
       if (byteCounter.encode(protocol).length > 65535) {
         throw new this._win.TypeError(
@@ -1688,7 +1688,7 @@ class RTCPeerConnection {
     }
 
     if (label.length > 32767) {
-      const byteCounter = new TextEncoder("utf-8");
+      const byteCounter = new TextEncoder();
       if (byteCounter.encode(label).length > 65535) {
         throw new this._win.TypeError(
           "label cannot be longer than 65535 bytes"

dom/media/webrtc/tests/mochitests/pc.js

@@ -287,7 +287,7 @@ PeerConnectionTest.prototype.send = async function(data, options) {
     } else if (d instanceof ArrayBuffer) {
       return d.byteLength;
     } else if (d instanceof String || typeof d === "string") {
-      return new TextEncoder("utf-8").encode(d).length;
+      return new TextEncoder().encode(d).length;
     } else {
       ok(false);
     }

dom/push/PushCrypto.sys.mjs

@@ -11,7 +11,7 @@ XPCOMUtils.defineLazyGetter(lazy, "gDOMBundle", () =>
 );
 
 // getCryptoParamsFromHeaders is exported for test purposes.
-const UTF8 = new TextEncoder("utf-8");
+const UTF8 = new TextEncoder();
 
 const ECDH_KEY = { name: "ECDH", namedCurve: "P-256" };
 const ECDSA_KEY = { name: "ECDSA", namedCurve: "P-256" };

dom/push/test/test_error_reporting.html

@@ -54,7 +54,7 @@ http://creativecommons.org/licenses/publicdomain/
   var idCounter = 1;
   function waitForDeliveryError(request) {
     return new Promise(resolve => {
-      var data = new TextEncoder("utf-8").encode(JSON.stringify(request));
+      var data = new TextEncoder().encode(JSON.stringify(request));
       var principal = SpecialPowers.wrap(window).clientPrincipal;
 
       let messageId = "message-" + (idCounter++);

dom/push/test/webpush.js

@@ -20,10 +20,8 @@
     namedCurve: "P-256",
   };
   var webCrypto = g.crypto.subtle;
-  var ENCRYPT_INFO = new TextEncoder("utf-8").encode(
-    "Content-Encoding: aesgcm128"
-  );
-  var NONCE_INFO = new TextEncoder("utf-8").encode("Content-Encoding: nonce");
+  var ENCRYPT_INFO = new TextEncoder().encode("Content-Encoding: aesgcm128");
+  var NONCE_INFO = new TextEncoder().encode("Content-Encoding: nonce");
 
   function chunkArray(array, size) {
     var start = array.byteOffset || 0;
@@ -86,7 +84,7 @@
   /* Coerces data into a Uint8Array */
   function ensureView(data) {
     if (typeof data === "string") {
-      return new TextEncoder("utf-8").encode(data);
+      return new TextEncoder().encode(data);
     }
     if (data instanceof ArrayBuffer) {
       return new Uint8Array(data);

dom/push/test/xpcshell/test_crypto_encrypt.js

@@ -52,7 +52,7 @@ add_task(async function static_aes128gcm() {
     ciphertext: from64(`DGv6ra1nlYgDCS1FRnbzlwAAEABBBP4z9KsN6nGRTbVYI_c7VJSPQTBtkgcy27ml
                         mlMoZIIgDll6e3vCYLocInmYWAmS6TlzAC8wEqKK6PBru3jl7A_yl95bQpu6cVPT
                         pK4Mqgkf1CXztLVBSt2Ks3oZwbuwXPXLWyouBWLVWGNWQexSgSxsj_Qulcy4a-fN`),
-    plaintext: new TextEncoder("utf-8").encode(
+    plaintext: new TextEncoder().encode(
       "When I grow up, I want to be a watermelon"
     ),
     authSecret: from64("BTBZMqHH6r4Tts7J_aSIgg"),
@@ -107,7 +107,7 @@ add_task(async function static_aes128gcm() {
 add_task(async function aes128gcm_simple() {
   let [recvPublicKey, recvPrivateKey] = await PushCrypto.generateKeys();
 
-  let message = new TextEncoder("utf-8").encode("Fast for good.");
+  let message = new TextEncoder().encode("Fast for good.");
   let authSecret = crypto.getRandomValues(new Uint8Array(16));
   let { ciphertext, encoding } = await PushCrypto.encrypt(
     message,
@@ -133,7 +133,7 @@ add_task(async function aes128gcm_rs() {
   for (let rs of [-1, 0, 1, 17]) {
     let payload = "x".repeat(1024);
     info(`testing expected failure with rs=${rs}`);
-    let message = new TextEncoder("utf-8").encode(payload);
+    let message = new TextEncoder().encode(payload);
     let authSecret = crypto.getRandomValues(new Uint8Array(16));
     await Assert.rejects(
       PushCrypto.encrypt(message, recvPublicKey, authSecret, { rs }),
@@ -143,7 +143,7 @@ add_task(async function aes128gcm_rs() {
   for (let rs of [18, 50, 1024, 4096, 16384]) {
     info(`testing expected success with rs=${rs}`);
     let payload = "x".repeat(rs * 3);
-    let message = new TextEncoder("utf-8").encode(payload);
+    let message = new TextEncoder().encode(payload);
     let authSecret = crypto.getRandomValues(new Uint8Array(16));
     let { ciphertext, encoding } = await PushCrypto.encrypt(
       message,
@@ -179,7 +179,7 @@ add_task(async function aes128gcm_edgecases() {
     10240,
   ]) {
     info(`testing encryption of ${size} byte payload`);
-    let message = new TextEncoder("utf-8").encode("x".repeat(size));
+    let message = new TextEncoder().encode("x".repeat(size));
     let authSecret = crypto.getRandomValues(new Uint8Array(16));
     let { ciphertext, encoding } = await PushCrypto.encrypt(
       message,

dom/push/test/xpcshell/test_observer_data.js

@@ -7,7 +7,7 @@ var systemPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
 
 add_task(async function test_notifyWithData() {
   let textData = '{"hello":"world"}';
-  let payload = new TextEncoder("utf-8").encode(textData);
+  let payload = new TextEncoder().encode(textData);
 
   let notifyPromise = promiseObserverNotification(
     PushServiceComponent.pushTopic

dom/push/test/xpcshell/test_observer_remoting.js

@@ -89,7 +89,7 @@ var waitForNotifierObservers = async function(
   );
 
   let scope = "chrome://test-scope";
-  let data = new TextEncoder("utf-8").encode(text);
+  let data = new TextEncoder().encode(text);
 
   if (shouldNotify) {
     pushNotifier.notifyPushWithData(scope, principal, "", data);

dom/tests/mochitest/fetch/test_headers_common.js

@@ -261,7 +261,7 @@ function iterateForOf(iter) {
 }
 
 function byteInflate(str) {
-  var encoder = new TextEncoder("utf-8");
+  var encoder = new TextEncoder();
   var encoded = encoder.encode(str);
   var result = "";
   for (var i = 0; i < encoded.length; ++i) {

dom/webauthn/tests/browser/browser_fido_appid_extension.js

@@ -73,7 +73,7 @@ add_task(async function test_appid() {
     .then(arrivingHereIsBad)
     .catch(expectInvalidStateError);
 
-  let rpId = new TextEncoder("utf-8").encode(appid);
+  let rpId = new TextEncoder().encode(appid);
   let rpIdHash = await crypto.subtle.digest("SHA-256", rpId);
 
   // Succeed with the right fallback rpId.

dom/webauthn/tests/u2f/browser/browser_fido_appid_extension.js

@@ -73,7 +73,7 @@ add_task(async function test_appid() {
     .then(arrivingHereIsBad)
     .catch(expectInvalidStateError);
 
-  let rpId = new TextEncoder("utf-8").encode(appid);
+  let rpId = new TextEncoder().encode(appid);
   let rpIdHash = await crypto.subtle.digest("SHA-256", rpId);
 
   // Succeed with the right fallback rpId.

js/xpconnect/tests/unit/test_crypto.js

@@ -13,14 +13,14 @@ function run_test() {
   sb.equal = equal;
   let innerPromise = new Promise(r => (sb.test_done = r));
   Cu.evalInSandbox('crypto.subtle.digest("SHA-256", ' +
-                   '                     new TextEncoder("utf-8").encode("abc"))' +
+                   '                     new TextEncoder().encode("abc"))' +
                    '  .then(h => equal(new Uint16Array(h)[0], 30906))' +
                    '  .then(test_done);', sb);
 
   Cu.importGlobalProperties(["crypto"]);
   ok(crypto);
   ok(crypto.subtle);
-  let outerPromise = crypto.subtle.digest("SHA-256", new TextEncoder("utf-8").encode("abc"))
+  let outerPromise = crypto.subtle.digest("SHA-256", new TextEncoder().encode("abc"))
       .then(h => Assert.equal(new Uint16Array(h)[0], 30906));
 
   do_test_pending();

netwerk/test/unit/test_auth_multiple.js

@@ -258,7 +258,7 @@ function basic_auth(metadata, response) {
 // Digest functions
 //
 function bytesFromString(str) {
-  const encoder = new TextEncoder("utf-8");
+  const encoder = new TextEncoder();
   return encoder.encode(str);
 }
 

remote/shared/Capture.sys.mjs

@@ -175,7 +175,7 @@ capture.toBase64 = function(canvas) {
  */
 capture.toHash = function(canvas) {
   let u = capture.toBase64(canvas);
-  let buffer = new TextEncoder("utf-8").encode(u);
+  let buffer = new TextEncoder().encode(u);
   return crypto.subtle.digest("SHA-256", buffer).then(hash => hex(hash));
 };
 

security/manager/locales/en-US/chrome/pipnss/pipnss.properties

@@ -13,7 +13,7 @@ CertPasswordPromptDefault=Please enter your Primary Password.
 # It's possible to verify the length of a translation using the Browser Console
 # in Firefox and evaluating the following code:
 #
-# (new TextEncoder('utf-8').encode('YOURSTRING')).length
+# (new TextEncoder().encode('YOURSTRING')).length
 #
 # Simply replace YOURSTRING with your translation.
 #

services/fxaccounts/FxAccountsCommands.js

@@ -264,7 +264,7 @@ class SendTab {
   async send(to, tab) {
     log.info(`Sending a tab to ${to.length} devices.`);
     const flowID = this._fxai.telemetry.generateFlowID();
-    const encoder = new TextEncoder("utf8");
+    const encoder = new TextEncoder();
     const data = { entries: [{ title: tab.title, url: tab.url }] };
     const report = {
       succeeded: [],

services/fxaccounts/FxAccountsKeys.jsm

@@ -615,7 +615,7 @@ class FxAccountsKeys {
       scopedKeyMetadata.keyRotationSecret
     );
     const salt = CommonUtils.hexToArrayBuffer(uid);
-    const context = new TextEncoder("utf8").encode(
+    const context = new TextEncoder().encode(
       "identity.mozilla.com/picl/v1/scoped_key\n" + scopedKeyMetadata.identifier
     );
 

services/fxaccounts/tests/xpcshell/test_commands.js

@@ -228,7 +228,7 @@ add_task(async function test_sendtab_receive_old_client() {
   // No 'flowID' in the encrypted payload, no 'streamID' anywhere.
   const payload = {
     flowID: "flow-id",
-    encrypted: new TextEncoder("utf8").encode(JSON.stringify(data)),
+    encrypted: new TextEncoder().encode(JSON.stringify(data)),
   };
   const reason = "push";
   await sendTab.handle("sender-id", payload, reason);

services/sync/modules/util.js

@@ -775,11 +775,7 @@ XPCOMUtils.defineLazyGetter(Utils, "_utf8Converter", function() {
   return converter;
 });
 
-XPCOMUtils.defineLazyGetter(
-  Utils,
-  "utf8Encoder",
-  () => new TextEncoder("utf-8")
-);
+XPCOMUtils.defineLazyGetter(Utils, "utf8Encoder", () => new TextEncoder());
 
 /*
  * Commonly-used services

testing/web-platform/tests/resources/chromium/nfc-mock.js

@@ -50,7 +50,7 @@ function toByteArray(data) {
     tmpData = JSON.stringify(tmpData);
 
   if (typeof tmpData === 'string')
-    byteArray = new TextEncoder('utf-8').encode(tmpData);
+    byteArray = new TextEncoder().encode(tmpData);
 
   return byteArray;
 }

testing/web-platform/tests/web-nfc/resources/nfc-helpers.js

@@ -47,7 +47,7 @@ function nfc_test(func, name, properties) {
 }
 
 const test_text_data = 'Test text data.';
-const test_text_byte_array = new TextEncoder('utf-8').encode(test_text_data);
+const test_text_byte_array = new TextEncoder().encode(test_text_data);
 const test_number_data = 42;
 const test_json_data = {level: 1, score: 100, label: 'Game'};
 const test_url_data = 'https://w3c.github.io/web-nfc/';
@@ -124,7 +124,7 @@ function createTextRecord(data, encoding, lang) {
 
 function createMimeRecordFromJson(json) {
   return createRecord(
-      'mime', new TextEncoder('utf-8').encode(JSON.stringify(json)),
+      'mime', new TextEncoder().encode(JSON.stringify(json)),
       test_record_id, 'application/json');
 }
 

testing/web-platform/tests/webauthn/createcredential-minpinlength.https.html

@@ -25,7 +25,7 @@ standardSetup(function() {
     // The extension results will be in the authenticator outputs.
     assert_true(new Uint8Array(credential.response.getAuthenticatorData())
                     .toString()
-                    .includes(new TextEncoder("utf-8")
+                    .includes(new TextEncoder()
                                   .encode("minPinLength")
                                   .toString()));
   }, "navigator.credentials.create() with minPinLength requested");

testing/web-platform/tests/webauthn/resources/common-inputs.js

@@ -24,7 +24,7 @@ const AUTHENTICATOR_SELECTION_CRITERIA = {
 };
 
 const MAKE_CREDENTIAL_OPTIONS = {
-    challenge: new TextEncoder("utf-8").encode(CHALLENGE),
+    challenge: new TextEncoder().encode(CHALLENGE),
     rp: PUBLIC_KEY_RP,
     user: PUBLIC_KEY_USER,
     pubKeyCredParams: PUBLIC_KEY_PARAMETERS,

testing/web-platform/tests/webauthn/webauthn-testdriver-basic.https.html

@@ -40,7 +40,7 @@ promise_test(async t => {
     new Cbor(credential.response.attestationObject).getCBOR();
 
   let rpIdHash = new Uint8Array(await crypto.subtle.digest(
-    { name: "SHA-256" }, new TextEncoder("utf-8").encode(PUBLIC_KEY_RP.id)));
+    { name: "SHA-256" }, new TextEncoder().encode(PUBLIC_KEY_RP.id)));
 
   let authenticatorData = parseAuthenticatorData(attestationObject.authData);
 
@@ -59,7 +59,7 @@ promise_test(async t => {
 promise_test(async t => {
   let assertion = await navigator.credentials.get({
     publicKey: {
-      challenge: new TextEncoder("utf-8").encode(CHALLENGE),
+      challenge: new TextEncoder().encode(CHALLENGE),
       rpId: PUBLIC_KEY_RP.id,
       allowCredentials: [{
         type: "public-key",
@@ -87,7 +87,7 @@ promise_test(async t => {
   let authenticatorData = parseAuthenticatorData(binaryAuthenticatorData);
 
   let rpIdHash = new Uint8Array(await crypto.subtle.digest(
-    { name: "SHA-256" }, new TextEncoder("utf-8").encode(PUBLIC_KEY_RP.id)));
+    { name: "SHA-256" }, new TextEncoder().encode(PUBLIC_KEY_RP.id)));
 
   assert_array_equals(authenticatorData.rpIdHash, rpIdHash)
   assert_true(authenticatorData.flags.up);

toolkit/components/extensions/ExtensionTestCommon.jsm

@@ -521,7 +521,7 @@ ExtensionTestCommon = class ExtensionTestCommon {
     for (let filename in files) {
       let script = files[filename];
       if (!instanceOf(script, "ArrayBuffer")) {
-        script = new TextEncoder("utf-8").encode(script).buffer;
+        script = new TextEncoder().encode(script).buffer;
       }
 
       let stream = Cc[

toolkit/components/extensions/test/xpcshell/test_ext_webRequest_filterResponseData.js

@@ -375,9 +375,7 @@ add_task(async function test_filter_302() {
 
           filter.ondata = event => {
             const script = "forceError();";
-            filter.write(
-              new Uint8Array(new TextEncoder("utf-8").encode(script))
-            );
+            filter.write(new Uint8Array(new TextEncoder().encode(script)));
             filter.close();
             browser.test.sendMessage("filter-ondata");
           };

toolkit/components/extensions/test/xpcshell/test_ext_webRequest_responseBody.js

@@ -268,7 +268,7 @@ const TASKS = [
   {
     url: "slow_response.sjs",
     task(filter, resolve, num) {
-      let encoder = new TextEncoder("utf-8");
+      let encoder = new TextEncoder();
 
       filter.onstop = event => {
         browser.test.fail(
@@ -344,7 +344,7 @@ const TASKS = [
   {
     url: "slow_response.sjs",
     task(filter, resolve, num) {
-      let encoder = new TextEncoder("utf-8");
+      let encoder = new TextEncoder();
       let decoder = new TextDecoder("utf-8");
 
       filter.onstop = event => {

toolkit/components/extensions/test/xpcshell/test_ext_webRequest_startup_StreamFilter.js

@@ -34,7 +34,7 @@ add_task(async function test_StreamFilter_at_restart() {
       details => {
         let filter = browser.webRequest.filterResponseData(details.requestId);
         filter.onstop = () => {
-          let encoded = new TextEncoder("utf-8").encode(data);
+          let encoded = new TextEncoder().encode(data);
           filter.write(encoded);
           filter.close();
         };

toolkit/components/formautofill/FormAutofillStorageBase.jsm

@@ -232,7 +232,7 @@ function sha512(string) {
   if (string == null) {
     return null;
   }
-  let encoder = new TextEncoder("utf-8");
+  let encoder = new TextEncoder();
   let bytes = encoder.encode(string);
   let hash = new CryptoHash("sha512");
   hash.update(bytes, bytes.length);

toolkit/components/osfile/modules/osfile_native.jsm

@@ -92,8 +92,7 @@ var writeAtomic = function(path, buffer, options = {}) {
 
   if (typeof buffer == "string") {
     // Normalize buffer to a C buffer by encoding it
-    let encoding = options.encoding || "utf-8";
-    buffer = new TextEncoder(encoding).encode(buffer);
+    buffer = new TextEncoder().encode(buffer);
   }
 
   if (ArrayBuffer.isView(buffer)) {

toolkit/components/osfile/modules/osfile_shared_front.js

@@ -432,8 +432,7 @@ if (typeof Components != "undefined") {
 
     if (typeof buffer == "string") {
       // Normalize buffer to a C buffer by encoding it
-      let encoding = options.encoding || "utf-8";
-      buffer = new TextEncoder(encoding).encode(buffer);
+      buffer = new TextEncoder().encode(buffer);
     }
 
     if ("compression" in options && options.compression == "lz4") {

toolkit/components/places/PlacesUtils.sys.mjs

@@ -2385,7 +2385,7 @@ PlacesUtils.metadata = {
   },
 
   _base64Encode(str) {
-    return ChromeUtils.base64URLEncode(new TextEncoder("utf-8").encode(str), {
+    return ChromeUtils.base64URLEncode(new TextEncoder().encode(str), {
       pad: true,
     });
   },

toolkit/components/search/SearchUtils.sys.mjs

@@ -327,7 +327,7 @@ export var SearchUtils = {
       name +
       disclaimer.replace(/\$appName/g, Services.appinfo.name);
 
-    let data = new TextEncoder("utf-8").encode(salt);
+    let data = new TextEncoder().encode(salt);
     let hasher = Cc["@mozilla.org/security/hash;1"].createInstance(
       Ci.nsICryptoHash
     );

toolkit/components/telemetry/app/TelemetryControllerParent.sys.mjs

@@ -486,7 +486,7 @@ var Impl = {
         const payload = {};
         payload.encryptedData = await lazy.jwcrypto.generateJWE(
           aOptions.publicKey,
-          new TextEncoder("utf-8").encode(JSON.stringify(aPayload))
+          new TextEncoder().encode(JSON.stringify(aPayload))
         );
 
         payload.schemaVersion = aOptions.schemaVersion;

toolkit/components/telemetry/tests/unit/test_TelemetryLateWrites.js

@@ -55,7 +55,7 @@ function write_string_to_file(file, contents) {
   );
   bos.setOutputStream(ostream);
 
-  let utf8 = new TextEncoder("utf-8").encode(contents);
+  let utf8 = new TextEncoder().encode(contents);
   bos.writeByteArray(utf8);
   ostream.QueryInterface(Ci.nsISafeOutputStream).finish();
   ostream.close();

toolkit/components/utils/Sampling.jsm

@@ -73,7 +73,7 @@ var Sampling = {
    */
   async truncatedHash(data) {
     const hasher = crypto.subtle;
-    const input = new TextEncoder("utf-8").encode(JSON.stringify(data));
+    const input = new TextEncoder().encode(JSON.stringify(data));
     const hash = await hasher.digest("SHA-256", input);
     // truncate hash to 12 characters (2^48), because the full hash is larger
     // than JS can meaningfully represent as a number.

toolkit/modules/subprocess/Subprocess.sys.mjs

@@ -33,7 +33,7 @@ function encodeEnvVar(name, value) {
     return `${name}=${value}`;
   }
 
-  let encoder = new TextEncoder("utf-8");
+  let encoder = new TextEncoder();
   function encode(val) {
     return typeof val === "string" ? encoder.encode(val) : val;
   }

toolkit/mozapps/extensions/internal/AddonTestUtils.jsm

@@ -966,7 +966,7 @@ var AddonTestUtils = {
         data = JSON.stringify(data);
       }
       if (!(data instanceof ArrayBuffer)) {
-        data = new TextEncoder("utf-8").encode(data).buffer;
+        data = new TextEncoder().encode(data).buffer;
       }
 
       let stream = ArrayBufferInputStream(data, 0, data.byteLength);