enable eqeqeq, close #1225

packages/core-js-pure/override/internals/collection.js

@@ -8,6 +8,7 @@ var iterate = require('../internals/iterate');
 var anInstance = require('../internals/an-instance');
 var isCallable = require('../internals/is-callable');
 var isObject = require('../internals/is-object');
+var isNullOrUndefined = require('../internals/is-null-or-undefined');
 var setToStringTag = require('../internals/set-to-string-tag');
 var defineProperty = require('../internals/object-define-property').f;
 var forEach = require('../internals/array-iteration').forEach;
@@ -38,19 +39,19 @@ module.exports = function (CONSTRUCTOR_NAME, wrapper, common) {
         type: CONSTRUCTOR_NAME,
         collection: new NativeConstructor()
       });
-      if (iterable != undefined) iterate(iterable, target[ADDER], { that: target, AS_ENTRIES: IS_MAP });
+      if (!isNullOrUndefined(iterable)) iterate(iterable, target[ADDER], { that: target, AS_ENTRIES: IS_MAP });
     });
 
     var Prototype = Constructor.prototype;
 
     var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);
 
     forEach(['add', 'clear', 'delete', 'forEach', 'get', 'has', 'set', 'keys', 'values', 'entries'], function (KEY) {
-      var IS_ADDER = KEY == 'add' || KEY == 'set';
-      if (KEY in NativePrototype && !(IS_WEAK && KEY == 'clear')) {
+      var IS_ADDER = KEY === 'add' || KEY === 'set';
+      if (KEY in NativePrototype && !(IS_WEAK && KEY === 'clear')) {
         createNonEnumerableProperty(Prototype, KEY, function (a, b) {
           var collection = getInternalState(this).collection;
-          if (!IS_ADDER && IS_WEAK && !isObject(a)) return KEY == 'get' ? undefined : false;
+          if (!IS_ADDER && IS_WEAK && !isObject(a)) return KEY === 'get' ? undefined : false;
           var result = collection[KEY](a === 0 ? 0 : a, b);
           return IS_ADDER ? this : result;
         });

packages/core-js-pure/override/modules/es.date.to-json.js

@@ -20,6 +20,6 @@ $({ target: 'Date', proto: true, forced: FORCED }, {
     var O = toObject(this);
     var pv = toPrimitive(O, 'number');
     return typeof pv == 'number' && !isFinite(pv) ? null :
-      (!('toISOString' in O) && classof(O) == 'Date') ? call(toISOString, O) : O.toISOString();
+      (!('toISOString' in O) && classof(O) === 'Date') ? call(toISOString, O) : O.toISOString();
   }
 });

packages/core-js/internals/add-to-unscopables.js

@@ -8,7 +8,7 @@ var ArrayPrototype = Array.prototype;
 
 // Array.prototype[@@unscopables]
 // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
-if (ArrayPrototype[UNSCOPABLES] == undefined) {
+if (ArrayPrototype[UNSCOPABLES] === undefined) {
   defineProperty(ArrayPrototype, UNSCOPABLES, {
     configurable: true,
     value: create(null)

packages/core-js/internals/array-buffer-byte-length.js

@@ -8,6 +8,6 @@ var $TypeError = TypeError;
 // - Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
 // - If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
 module.exports = uncurryThisAccessor(ArrayBuffer.prototype, 'byteLength', 'get') || function (O) {
-  if (classof(O) != 'ArrayBuffer') throw $TypeError('ArrayBuffer expected');
+  if (classof(O) !== 'ArrayBuffer') throw $TypeError('ArrayBuffer expected');
   return O.byteLength;
 };

packages/core-js/internals/array-buffer-transfer.js

@@ -26,7 +26,7 @@ module.exports = PROPER_TRANSFER && function (arrayBuffer, newLength, preserveRe
   var fixedLength = !isResizable || !isResizable(arrayBuffer);
   if (isDetached(arrayBuffer)) throw TypeError('ArrayBuffer is detached');
   var newBuffer = structuredClone(arrayBuffer, { transfer: [arrayBuffer] });
-  if (byteLength == newByteLength && (preserveResizability || fixedLength)) return newBuffer;
+  if (byteLength === newByteLength && (preserveResizability || fixedLength)) return newBuffer;
   if (byteLength >= newByteLength && (!preserveResizability || fixedLength)) return slice(newBuffer, 0, newByteLength);
   var options = (preserveResizability && !fixedLength) && maxByteLength ? { maxByteLength: maxByteLength(newBuffer) } : undefined;
   var newNewBuffer = new ArrayBuffer(newByteLength, options);

packages/core-js/internals/array-buffer.js

@@ -212,7 +212,7 @@ if (!NATIVE_ARRAY_BUFFER) {
     new NativeArrayBuffer();
     new NativeArrayBuffer(1.5);
     new NativeArrayBuffer(NaN);
-    return NativeArrayBuffer.length != 1 || INCORRECT_ARRAY_BUFFER_NAME && !CONFIGURABLE_FUNCTION_NAME;
+    return NativeArrayBuffer.length !== 1 || INCORRECT_ARRAY_BUFFER_NAME && !CONFIGURABLE_FUNCTION_NAME;
   })) {
     /* eslint-enable no-new -- required for testing */
     $ArrayBuffer = function ArrayBuffer(length) {

packages/core-js/internals/array-includes.js

@@ -12,10 +12,10 @@ var createMethod = function (IS_INCLUDES) {
     var value;
     // Array#includes uses SameValueZero equality algorithm
     // eslint-disable-next-line no-self-compare -- NaN check
-    if (IS_INCLUDES && el != el) while (length > index) {
+    if (IS_INCLUDES && el !== el) while (length > index) {
       value = O[index++];
       // eslint-disable-next-line no-self-compare -- NaN check
-      if (value != value) return true;
+      if (value !== value) return true;
     // Array#indexOf ignores holes, Array#includes - not
     } else for (;length > index; index++) {
       if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;

packages/core-js/internals/array-iteration-from-last.js

@@ -6,7 +6,7 @@ var lengthOfArrayLike = require('../internals/length-of-array-like');
 
 // `Array.prototype.{ findLast, findLastIndex }` methods implementation
 var createMethod = function (TYPE) {
-  var IS_FIND_LAST_INDEX = TYPE == 1;
+  var IS_FIND_LAST_INDEX = TYPE === 1;
   return function ($this, callbackfn, that) {
     var O = toObject($this);
     var self = IndexedObject(O);

packages/core-js/internals/array-iteration.js

@@ -10,13 +10,13 @@ var push = uncurryThis([].push);
 
 // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterReject }` methods implementation
 var createMethod = function (TYPE) {
-  var IS_MAP = TYPE == 1;
-  var IS_FILTER = TYPE == 2;
-  var IS_SOME = TYPE == 3;
-  var IS_EVERY = TYPE == 4;
-  var IS_FIND_INDEX = TYPE == 6;
-  var IS_FILTER_REJECT = TYPE == 7;
-  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
+  var IS_MAP = TYPE === 1;
+  var IS_FILTER = TYPE === 2;
+  var IS_SOME = TYPE === 3;
+  var IS_EVERY = TYPE === 4;
+  var IS_FIND_INDEX = TYPE === 6;
+  var IS_FILTER_REJECT = TYPE === 7;
+  var NO_HOLES = TYPE === 5 || IS_FIND_INDEX;
   return function ($this, callbackfn, that, specificCreate) {
     var O = toObject($this);
     var self = IndexedObject(O);

packages/core-js/internals/async-iterator-iteration.js

@@ -11,10 +11,10 @@ var getIteratorDirect = require('../internals/get-iterator-direct');
 var closeAsyncIteration = require('../internals/async-iterator-close');
 
 var createMethod = function (TYPE) {
-  var IS_TO_ARRAY = TYPE == 0;
-  var IS_FOR_EACH = TYPE == 1;
-  var IS_EVERY = TYPE == 2;
-  var IS_SOME = TYPE == 3;
+  var IS_TO_ARRAY = TYPE === 0;
+  var IS_FOR_EACH = TYPE === 1;
+  var IS_EVERY = TYPE === 2;
+  var IS_SOME = TYPE === 3;
   return function (object, fn, target) {
     anObject(object);
     var MAPPING = fn !== undefined;

packages/core-js/internals/caller.js

@@ -1,6 +1,6 @@
 'use strict';
 module.exports = function (methodName, numArgs) {
-  return numArgs == 1 ? function (object, arg) {
+  return numArgs === 1 ? function (object, arg) {
     return object[methodName](arg);
   } : function (object, arg1, arg2) {
     return object[methodName](arg1, arg2);

packages/core-js/internals/classof.js

@@ -8,7 +8,7 @@ var TO_STRING_TAG = wellKnownSymbol('toStringTag');
 var $Object = Object;
 
 // ES3 wrong here
-var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';
+var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) === 'Arguments';
 
 // fallback for IE11 Script Access Denied error
 var tryGet = function (it, key) {
@@ -26,5 +26,5 @@ module.exports = TO_STRING_TAG_SUPPORT ? classofRaw : function (it) {
     // builtinTag case
     : CORRECT_ARGUMENTS ? classofRaw(O)
     // ES3 arguments fallback
-    : (result = classofRaw(O)) == 'Object' && isCallable(O.callee) ? 'Arguments' : result;
+    : (result = classofRaw(O)) === 'Object' && isCallable(O.callee) ? 'Arguments' : result;
 };

packages/core-js/internals/collection-strong.js

@@ -69,7 +69,7 @@ module.exports = {
       if (index !== 'F') return state.index[index];
       // frozen object case
       for (entry = state.first; entry; entry = entry.next) {
-        if (entry.key == key) return entry;
+        if (entry.key === key) return entry;
       }
     };
 
@@ -106,8 +106,8 @@ module.exports = {
           entry.removed = true;
           if (prev) prev.next = next;
           if (next) next.previous = prev;
-          if (state.first == entry) state.first = next;
-          if (state.last == entry) state.last = prev;
+          if (state.first === entry) state.first = next;
+          if (state.last === entry) state.last = prev;
           if (DESCRIPTORS) state.size--;
           else that.size--;
         } return !!entry;
@@ -194,8 +194,8 @@ module.exports = {
         return createIterResultObject(undefined, true);
       }
       // return step by kind
-      if (kind == 'keys') return createIterResultObject(entry.key, false);
-      if (kind == 'values') return createIterResultObject(entry.value, false);
+      if (kind === 'keys') return createIterResultObject(entry.key, false);
+      if (kind === 'values') return createIterResultObject(entry.value, false);
       return createIterResultObject([entry.key, entry.value], false);
     }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);
 

packages/core-js/internals/collection.js

@@ -27,14 +27,14 @@ module.exports = function (CONSTRUCTOR_NAME, wrapper, common) {
   var fixMethod = function (KEY) {
     var uncurriedNativeMethod = uncurryThis(NativePrototype[KEY]);
     defineBuiltIn(NativePrototype, KEY,
-      KEY == 'add' ? function add(value) {
+      KEY === 'add' ? function add(value) {
         uncurriedNativeMethod(this, value === 0 ? 0 : value);
         return this;
-      } : KEY == 'delete' ? function (key) {
+      } : KEY === 'delete' ? function (key) {
         return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);
-      } : KEY == 'get' ? function get(key) {
+      } : KEY === 'get' ? function get(key) {
         return IS_WEAK && !isObject(key) ? undefined : uncurriedNativeMethod(this, key === 0 ? 0 : key);
-      } : KEY == 'has' ? function has(key) {
+      } : KEY === 'has' ? function has(key) {
         return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);
       } : function set(key, value) {
         uncurriedNativeMethod(this, key === 0 ? 0 : key, value);
@@ -57,7 +57,7 @@ module.exports = function (CONSTRUCTOR_NAME, wrapper, common) {
   } else if (isForced(CONSTRUCTOR_NAME, true)) {
     var instance = new Constructor();
     // early implementations not supports chaining
-    var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
+    var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) !== instance;
     // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false
     var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });
     // most early implementations doesn't supports iterables, most modern - not close it correctly
@@ -96,7 +96,7 @@ module.exports = function (CONSTRUCTOR_NAME, wrapper, common) {
   }
 
   exported[CONSTRUCTOR_NAME] = Constructor;
-  $({ global: true, constructor: true, forced: Constructor != NativeConstructor }, exported);
+  $({ global: true, constructor: true, forced: Constructor !== NativeConstructor }, exported);
 
   setToStringTag(Constructor, CONSTRUCTOR_NAME);
 

packages/core-js/internals/date-to-iso-string.js

@@ -21,7 +21,7 @@ var getUTCSeconds = uncurryThis(DatePrototype.getUTCSeconds);
 // https://tc39.es/ecma262/#sec-date.prototype.toisostring
 // PhantomJS / old WebKit fails here:
 module.exports = (fails(function () {
-  return nativeDateToISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';
+  return nativeDateToISOString.call(new Date(-5e13 - 1)) !== '0385-07-25T07:06:39.999Z';
 }) || !fails(function () {
   nativeDateToISOString.call(new Date(NaN));
 })) ? function toISOString() {

packages/core-js/internals/descriptors.js

@@ -4,5 +4,5 @@ var fails = require('../internals/fails');
 // Detect IE8's incomplete defineProperty implementation
 module.exports = !fails(function () {
   // eslint-disable-next-line es/no-object-defineproperty -- required for testing
-  return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
+  return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] !== 7;
 });

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

@@ -1,4 +1,4 @@
 'use strict';
 var classof = require('../internals/classof-raw');
 
-module.exports = typeof process != 'undefined' && classof(process) == 'process';
+module.exports = typeof process != 'undefined' && classof(process) === 'process';

packages/core-js/internals/fix-regexp-well-known-symbol-logic.js

@@ -18,7 +18,7 @@ module.exports = function (KEY, exec, FORCED, SHAM) {
     // String methods call symbol-named RegEp methods
     var O = {};
     O[SYMBOL] = function () { return 7; };
-    return ''[KEY](O) != 7;
+    return ''[KEY](O) !== 7;
   });
 
   var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {

packages/core-js/internals/get-json-replacer-function.js

@@ -15,7 +15,7 @@ module.exports = function (replacer) {
   for (var i = 0; i < rawLength; i++) {
     var element = replacer[i];
     if (typeof element == 'string') push(keys, element);
-    else if (typeof element == 'number' || classof(element) == 'Number' || classof(element) == 'String') push(keys, toString(element));
+    else if (typeof element == 'number' || classof(element) === 'Number' || classof(element) === 'String') push(keys, toString(element));
   }
   var keysLength = keys.length;
   var root = true;

packages/core-js/internals/get-set-record.js

@@ -33,7 +33,7 @@ module.exports = function (obj) {
   var numSize = +obj.size;
   // NOTE: If size is undefined, then numSize will be NaN
   // eslint-disable-next-line no-self-compare -- NaN check
-  if (numSize != numSize) throw $TypeError(INVALID_SIZE);
+  if (numSize !== numSize) throw $TypeError(INVALID_SIZE);
   var intSize = toIntegerOrInfinity(numSize);
   if (intSize < 0) throw $RangeError(INVALID_SIZE);
   return new SetRecord(

packages/core-js/internals/global.js

@@ -1,6 +1,6 @@
 'use strict';
 var check = function (it) {
-  return it && it.Math == Math && it;
+  return it && it.Math === Math && it;
 };
 
 // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028

packages/core-js/internals/host-report-errors.js

@@ -2,6 +2,6 @@
 module.exports = function (a, b) {
   try {
     // eslint-disable-next-line no-console -- safe
-    arguments.length == 1 ? console.error(a) : console.error(a, b);
+    arguments.length === 1 ? console.error(a) : console.error(a, b);
   } catch (error) { /* empty */ }
 };

packages/core-js/internals/ie8-dom-define.js

@@ -8,5 +8,5 @@ module.exports = !DESCRIPTORS && !fails(function () {
   // eslint-disable-next-line es/no-object-defineproperty -- required for testing
   return Object.defineProperty(createElement('div'), 'a', {
     get: function () { return 7; }
-  }).a != 7;
+  }).a !== 7;
 });

packages/core-js/internals/ieee754.js

@@ -18,9 +18,9 @@ var pack = function (number, mantissaLength, bytes) {
   var exponent, mantissa, c;
   number = abs(number);
   // eslint-disable-next-line no-self-compare -- NaN check
-  if (number != number || number === Infinity) {
+  if (number !== number || number === Infinity) {
     // eslint-disable-next-line no-self-compare -- NaN check
-    mantissa = number != number ? 1 : 0;
+    mantissa = number !== number ? 1 : 0;
     exponent = eMax;
   } else {
     exponent = floor(log(number) / LN2);

packages/core-js/internals/indexed-object.js

@@ -12,5 +12,5 @@ module.exports = fails(function () {
   // eslint-disable-next-line no-prototype-builtins -- safe
   return !$Object('z').propertyIsEnumerable(0);
 }) ? function (it) {
-  return classof(it) == 'String' ? split(it, '') : $Object(it);
+  return classof(it) === 'String' ? split(it, '') : $Object(it);
 } : $Object;

packages/core-js/internals/is-array.js

@@ -5,5 +5,5 @@ var classof = require('../internals/classof-raw');
 // https://tc39.es/ecma262/#sec-isarray
 // eslint-disable-next-line es/no-array-isarray -- safe
 module.exports = Array.isArray || function isArray(argument) {
-  return classof(argument) == 'Array';
+  return classof(argument) === 'Array';
 };

packages/core-js/internals/is-big-int-array.js

@@ -3,5 +3,5 @@ var classof = require('../internals/classof');
 
 module.exports = function (it) {
   var klass = classof(it);
-  return klass == 'BigInt64Array' || klass == 'BigUint64Array';
+  return klass === 'BigInt64Array' || klass === 'BigUint64Array';
 };

packages/core-js/internals/is-forced.js

@@ -6,8 +6,8 @@ var replacement = /#|\.prototype\./;
 
 var isForced = function (feature, detection) {
   var value = data[normalize(feature)];
-  return value == POLYFILL ? true
-    : value == NATIVE ? false
+  return value === POLYFILL ? true
+    : value === NATIVE ? false
     : isCallable(detection) ? fails(detection)
     : !!detection;
 };

packages/core-js/internals/is-regexp.js

@@ -9,5 +9,5 @@ var MATCH = wellKnownSymbol('match');
 // https://tc39.es/ecma262/#sec-isregexp
 module.exports = function (it) {
   var isRegExp;
-  return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classof(it) == 'RegExp');
+  return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classof(it) === 'RegExp');
 };

packages/core-js/internals/iterator-define.js

@@ -45,7 +45,7 @@ module.exports = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, I
     || IterablePrototype['@@iterator']
     || DEFAULT && IterablePrototype[DEFAULT];
   var defaultIterator = !BUGGY_SAFARI_ITERATORS && nativeIterator || getIterationMethod(DEFAULT);
-  var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
+  var anyNativeIterator = NAME === 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
   var CurrentIteratorPrototype, methods, KEY;
 
   // fix native
@@ -66,7 +66,7 @@ module.exports = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, I
   }
 
   // fix Array.prototype.{ values, @@iterator }.name in V8 / FF
-  if (PROPER_FUNCTION_NAME && DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
+  if (PROPER_FUNCTION_NAME && DEFAULT === VALUES && nativeIterator && nativeIterator.name !== VALUES) {
     if (!IS_PURE && CONFIGURABLE_FUNCTION_NAME) {
       createNonEnumerableProperty(IterablePrototype, 'name', VALUES);
     } else {

packages/core-js/internals/math-expm1.js

@@ -9,8 +9,8 @@ module.exports = (!$expm1
   // Old FF bug
   || $expm1(10) > 22025.465794806719 || $expm1(10) < 22025.4657948067165168
   // Tor Browser bug
-  || $expm1(-2e-17) != -2e-17
+  || $expm1(-2e-17) !== -2e-17
 ) ? function expm1(x) {
   var n = +x;
-  return n == 0 ? n : n > -1e-6 && n < 1e-6 ? n + n * n / 2 : exp(n) - 1;
+  return n === 0 ? n : n > -1e-6 && n < 1e-6 ? n + n * n / 2 : exp(n) - 1;
 } : $expm1;

packages/core-js/internals/math-fround.js

@@ -24,6 +24,6 @@ module.exports = Math.fround || function fround(x) {
   a = (1 + EPSILON32 / EPSILON) * $abs;
   result = a - (a - $abs);
   // eslint-disable-next-line no-self-compare -- NaN check
-  if (result > MAX32 || result != result) return $sign * Infinity;
+  if (result > MAX32 || result !== result) return $sign * Infinity;
   return $sign * result;
 };

packages/core-js/internals/math-scale.js

@@ -8,7 +8,7 @@ module.exports = Math.scale || function scale(x, inLow, inHigh, outLow, outHigh)
   var nOutLow = +outLow;
   var nOutHigh = +outHigh;
   // eslint-disable-next-line no-self-compare -- NaN check
-  if (nx != nx || nInLow != nInLow || nInHigh != nInHigh || nOutLow != nOutLow || nOutHigh != nOutHigh) return NaN;
+  if (nx !== nx || nInLow !== nInLow || nInHigh !== nInHigh || nOutLow !== nOutLow || nOutHigh !== nOutHigh) return NaN;
   if (nx === Infinity || nx === -Infinity) return nx;
   return (nx - nInLow) * (nOutHigh - nOutLow) / (nInHigh - nInLow) + nOutLow;
 };