minor performance optimization polyfills of methods from Map upsert proposal

Author: zloirock

CHANGELOG.md

@@ -6,6 +6,7 @@
   - Allow `null` as `optionOrStep`
 - Improved accuracy of `Math.{ asinh, atanh }` polyfills with big and small values
 - Improved accuracy of `Number.prototype.toExponential` polyfills with big and small values
+- Minor performance optimization of polyfills of methods from [`Map` upsert proposal](https://github.com/tc39/proposal-upsert)
 - Wrap `Symbol.for` in `Symbol.prototype.description` polyfill for correct handling of empty string descriptions
 - Fixed one more case (`Iterator.prototype.take`) of a V8 ~ Chromium < 126 [bug](https://issues.chromium.org/issues/336839115)
 - Forced replacement of `Iterator.{ concat, zip, zipKeyed }` in the pure version for ensuring proper wrapped `Iterator` instances as the result

packages/core-js/modules/es.map.get-or-insert-computed.js

@@ -13,9 +13,9 @@ var set = MapHelpers.set;
 // https://github.com/tc39/proposal-upsert
 $({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
   getOrInsertComputed: function getOrInsertComputed(key, callbackfn) {
-    aMap(this);
+    var hasKey = has(IS_PURE ? aMap(this) : this, key);
     aCallable(callbackfn);
-    if (has(this, key)) return get(this, key);
+    if (hasKey) return get(this, key);
     // CanonicalizeKeyedCollectionKey
     if (key === 0 && 1 / key === -Infinity) key = 0;
     var value = callbackfn(key);

packages/core-js/modules/es.map.get-or-insert.js

@@ -12,7 +12,7 @@ var set = MapHelpers.set;
 // https://github.com/tc39/proposal-upsert
 $({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
   getOrInsert: function getOrInsert(key, value) {
-    if (has(aMap(this), key)) return get(this, key);
+    if (has(IS_PURE ? aMap(this) : this, key)) return get(this, key);
     set(this, key, value);
     return value;
   }

packages/core-js/modules/es.weak-map.get-or-insert.js

@@ -12,7 +12,7 @@ var set = WeakMapHelpers.set;
 // https://github.com/tc39/proposal-upsert
 $({ target: 'WeakMap', proto: true, real: true, forced: IS_PURE }, {
   getOrInsert: function getOrInsert(key, value) {
-    if (has(aWeakMap(this), key)) return get(this, key);
+    if (has(IS_PURE ? aWeakMap(this) : this, key)) return get(this, key);
     set(this, key, value);
     return value;
   }