forced replacement of Array#{ reduce, reduceRight } in Chrome 80-82, #766

https://bugs.chromium.org/p/chromium/issues/detail?id=1049982

Author: zloirock

CHANGELOG.md

@@ -10,6 +10,7 @@
 - Fixed microtask implementation in engines with `MutationObserver`, but without `document`, [#865](https://github.com/zloirock/core-js/issues/865), [#866](https://github.com/zloirock/core-js/issues/866)
 - Fixed `core-js-builder` with an empty (after the targets engines or another filtration) modules list, [#822](https://github.com/zloirock/core-js/issues/822)
 - Added a workaround for 3rd party `Reflect.set` polyfill bug, [#847](https://github.com/zloirock/core-js/issues/847)
+- Forced replacement of `Array#{ reduce, reduceRight }` in Chrome 80-82 because of [a bug](https://bugs.chromium.org/p/chromium/issues/detail?id=1049982), [#766](https://github.com/zloirock/core-js/issues/766)
 - Updated compat data:
   - Chrome up to 86
   - FF up to 82

packages/core-js-compat/src/data.js

@@ -202,15 +202,17 @@ const data = {
     safari: '9.0',
   },
   'es.array.reduce': {
-    chrome: '48',
+    chrome: '83', // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
     edge: '15',
     firefox: '50',
+    node: '6.0', // ^^^
     safari: '9.0',
   },
   'es.array.reduce-right': {
-    chrome: '48',
+    chrome: '83', // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
     edge: '15',
     firefox: '50',
+    node: '6.0', // ^^^
     safari: '9.0',
   },
   'es.array.reverse': {

packages/core-js/internals/engine-is-node.js

@@ -0,0 +1,4 @@
+var classof = require('../internals/classof-raw');
+var global = require('../internals/global');
+
+module.exports = classof(global.process) == 'process';

packages/core-js/internals/microtask.js

@@ -1,14 +1,13 @@
 var global = require('../internals/global');
 var getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;
-var classof = require('../internals/classof-raw');
 var macrotask = require('../internals/task').set;
 var IS_IOS = require('../internals/engine-is-ios');
+var IS_NODE = require('../internals/engine-is-node');
 
 var MutationObserver = global.MutationObserver || global.WebKitMutationObserver;
 var document = global.document;
 var process = global.process;
 var Promise = global.Promise;
-var IS_NODE = classof(process) == 'process';
 // Node.js 11 shows ExperimentalWarning on getting `queueMicrotask`
 var queueMicrotaskDescriptor = getOwnPropertyDescriptor(global, 'queueMicrotask');
 var queueMicrotask = queueMicrotaskDescriptor && queueMicrotaskDescriptor.value;

packages/core-js/internals/task.js

@@ -1,10 +1,10 @@
 var global = require('../internals/global');
 var fails = require('../internals/fails');
-var classof = require('../internals/classof-raw');
 var bind = require('../internals/function-bind-context');
 var html = require('../internals/html');
 var createElement = require('../internals/document-create-element');
 var IS_IOS = require('../internals/engine-is-ios');
+var IS_NODE = require('../internals/engine-is-node');
 
 var location = global.location;
 var set = global.setImmediate;
@@ -58,7 +58,7 @@ if (!set || !clear) {
     delete queue[id];
   };
   // Node.js 0.8-
-  if (classof(process) == 'process') {
+  if (IS_NODE) {
     defer = function (id) {
       process.nextTick(runner(id));
     };

packages/core-js/modules/es.array.reduce-right.js

@@ -3,14 +3,19 @@ var $ = require('../internals/export');
 var $reduceRight = require('../internals/array-reduce').right;
 var arrayMethodIsStrict = require('../internals/array-method-is-strict');
 var arrayMethodUsesToLength = require('../internals/array-method-uses-to-length');
+var CHROME_VERSION = require('../internals/engine-v8-version');
+var IS_NODE = require('../internals/engine-is-node');
 
 var STRICT_METHOD = arrayMethodIsStrict('reduceRight');
 // For preventing possible almost infinite loop in non-standard implementations, test the forward version of the method
 var USES_TO_LENGTH = arrayMethodUsesToLength('reduce', { 1: 0 });
+// Chrome 80-82 has a critical bug
+// https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
+var CHROME_BUG = !IS_NODE && CHROME_VERSION > 79 && CHROME_VERSION < 83;
 
 // `Array.prototype.reduceRight` method
 // https://tc39.github.io/ecma262/#sec-array.prototype.reduceright
-$({ target: 'Array', proto: true, forced: !STRICT_METHOD || !USES_TO_LENGTH }, {
+$({ target: 'Array', proto: true, forced: !STRICT_METHOD || !USES_TO_LENGTH || CHROME_BUG }, {
   reduceRight: function reduceRight(callbackfn /* , initialValue */) {
     return $reduceRight(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
   }

packages/core-js/modules/es.array.reduce.js

@@ -3,13 +3,18 @@ var $ = require('../internals/export');
 var $reduce = require('../internals/array-reduce').left;
 var arrayMethodIsStrict = require('../internals/array-method-is-strict');
 var arrayMethodUsesToLength = require('../internals/array-method-uses-to-length');
+var CHROME_VERSION = require('../internals/engine-v8-version');
+var IS_NODE = require('../internals/engine-is-node');
 
 var STRICT_METHOD = arrayMethodIsStrict('reduce');
 var USES_TO_LENGTH = arrayMethodUsesToLength('reduce', { 1: 0 });
+// Chrome 80-82 has a critical bug
+// https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
+var CHROME_BUG = !IS_NODE && CHROME_VERSION > 79 && CHROME_VERSION < 83;
 
 // `Array.prototype.reduce` method
 // https://tc39.github.io/ecma262/#sec-array.prototype.reduce
-$({ target: 'Array', proto: true, forced: !STRICT_METHOD || !USES_TO_LENGTH }, {
+$({ target: 'Array', proto: true, forced: !STRICT_METHOD || !USES_TO_LENGTH || CHROME_BUG }, {
   reduce: function reduce(callbackfn /* , initialValue */) {
     return $reduce(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
   }

packages/core-js/modules/es.promise.js

@@ -11,7 +11,6 @@ var setSpecies = require('../internals/set-species');
 var isObject = require('../internals/is-object');
 var aFunction = require('../internals/a-function');
 var anInstance = require('../internals/an-instance');
-var classof = require('../internals/classof-raw');
 var inspectSource = require('../internals/inspect-source');
 var iterate = require('../internals/iterate');
 var checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');
@@ -25,6 +24,7 @@ var perform = require('../internals/perform');
 var InternalStateModule = require('../internals/internal-state');
 var isForced = require('../internals/is-forced');
 var wellKnownSymbol = require('../internals/well-known-symbol');
+var IS_NODE = require('../internals/engine-is-node');
 var V8_VERSION = require('../internals/engine-v8-version');
 
 var SPECIES = wellKnownSymbol('species');
@@ -39,7 +39,6 @@ var process = global.process;
 var $fetch = getBuiltIn('fetch');
 var newPromiseCapability = newPromiseCapabilityModule.f;
 var newGenericPromiseCapability = newPromiseCapability;
-var IS_NODE = classof(process) == 'process';
 var DISPATCH_EVENT = !!(document && document.createEvent && global.dispatchEvent);
 var UNHANDLED_REJECTION = 'unhandledrejection';
 var REJECTION_HANDLED = 'rejectionhandled';

packages/core-js/modules/web.queue-microtask.js

@@ -1,16 +1,15 @@
 var $ = require('../internals/export');
 var global = require('../internals/global');
 var microtask = require('../internals/microtask');
-var classof = require('../internals/classof-raw');
+var IS_NODE = require('../internals/engine-is-node');
 
 var process = global.process;
-var isNode = classof(process) == 'process';
 
 // `queueMicrotask` method
 // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-queuemicrotask
 $({ global: true, enumerable: true, noTargetGet: true }, {
   queueMicrotask: function queueMicrotask(fn) {
-    var domain = isNode && process.domain;
+    var domain = IS_NODE && process.domain;
     microtask(domain ? domain.bind(fn) : fn);
   }
 });