Move WeakMap.prototype.getOrInsertComputed tests from staging to built-ins

test/built-ins/WeakMap/prototype/getOrInsertComputed/adds-object-element.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Adds a value with an Object key if key is not already in the map.
 info: |
@@ -13,7 +13,6 @@ info: |
   9. Append p to M.[[WeakMapData]].
   ...
 features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
 var map = new WeakMap();
 var foo = {};

test/built-ins/WeakMap/prototype/getOrInsertComputed/adds-symbol-element.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Adds a value with a Symbol key if key is not already in the map.
 info: |
@@ -13,7 +13,6 @@ info: |
   9. Append p to M.[[WeakMapData]].
   ...
 features: [Symbol, WeakMap, symbols-as-weakmap-keys, upsert]
-flags: [noStrict]
 ---*/
 var map = new WeakMap();
 var foo = Symbol('a description');

test/built-ins/WeakMap/prototype/getOrInsertComputed/adds-value-different-callbackfn.js

@@ -1,7 +1,7 @@
 // Copyright (C) 2025 Jonas Haukenes, Mathias Ness. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Does not throw if `callbackfn` is callable.
 info: |
@@ -10,8 +10,7 @@ info: |
   ...
   3. If IsCallable(callbackfn) is false, throw a TypeError exception.
   ...
-features: [arrow-function, upsert]
+features: [arrow-function, upsert, WeakMap]
-flags: [noStrict]
 ---*/
 var bar = {};
 var baz = {};

test/built-ins/WeakMap/prototype/getOrInsertComputed/callbackfn-throws.js

@@ -1,7 +1,7 @@
 // Copyright (C) 2024 Jonas Haukenes, Mathias Ness. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   WeakMap.getOrInsertComputed throws when callbackfn throws return if abrubt completion Call(callbackfn, key)
 info: |
@@ -10,8 +10,7 @@ info: |
   ...
   6. Let value be ? Call(callbackfn, undefined, key).
   ...
-features: [upsert]
+features: [upsert, WeakMap]
-flags: [noStrict]
 ---*/
 var map = new WeakMap();
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/check-callback-fn-args.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2025 Daniel Minor. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-weakmap.prototype.getorinsertcomputed
+description: |
+  Check that callbackfn receives undefined for this and exactly one argument.
+info: |
+  WeakMap.prototype.getOrInsertComputed ( key , callbackfn )
+
+  ...
+
+  6. Let value be ? Call(callbackfn, key).
+  ...
+features: [upsert, Symbol, WeakMap]
+flags: [onlyStrict]
+---*/
+var map = new WeakMap();
+var symbol = Symbol('a description');
+
+map.getOrInsertComputed(symbol, function () {
+  assert.sameValue(this, undefined);
+  assert.sameValue(arguments.length, 1);
+  assert.sameValue(arguments[0], symbol);
+});

test/built-ins/WeakMap/prototype/getOrInsertComputed/check-state-after-callback-fn-throws.js

@@ -0,0 +1,61 @@
+// Copyright (C) 2025 Daniel Minor. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-weakmap.prototype.getorinsertcomputed
+description: |
+  Check state after callback function throws
+info: |
+  WeakMap.prototype.getOrInsertComputed ( key , callbackfn )
+
+  ...
+
+  6. Let value be ? Call(callbackfn, key).
+  ...
+features: [upsert, WeakMap, Symbol]
+---*/
+var map = new WeakMap();
+const obj0 = {};
+const obj1 = {};
+const obj2 = {};
+const obj3 = {};
+map.set(obj0, 'zero');
+map.set(obj1, 'one');
+map.set(obj2, 'two');
+
+assert.throws(Error, function() {
+  map.getOrInsertComputed(Symbol('3'), function() {
+    throw new Error('throw in callback');
+  })
+});
+
+// Check the values after throwing in callbackfn.
+assert.sameValue(map.get(obj0), 'zero');
+assert.sameValue(map.get(obj1), 'one');
+assert.sameValue(map.get(obj2), 'two');
+assert.sameValue(map.has(obj3), false);
+
+assert.throws(Error, function() {
+  map.getOrInsertComputed(obj3, function() {
+    map.set(obj1, 'mutated');
+    throw new Error('throw in callback');
+  })
+});
+
+// Check the values after throwing in callbackfn, with mutation.
+assert.sameValue(map.get(obj0), 'zero');
+assert.sameValue(map.get(obj1), 'mutated');
+assert.sameValue(map.get(obj2), 'two');
+assert.sameValue(map.has(obj3), false);
+
+assert.throws(Error, function() {
+  map.getOrInsertComputed(obj3, function() {
+    map.set(obj3, 'mutated');
+    throw new Error('throw in callback');
+  })
+});
+
+// Check the values after throwing in callbackfn, with mutation.
+assert.sameValue(map.get(obj0), 'zero');
+assert.sameValue(map.get(obj1), 'mutated');
+assert.sameValue(map.get(obj2), 'two');
+assert.sameValue(map.get(obj3), 'mutated');

test/built-ins/WeakMap/prototype/getOrInsertComputed/does-not-evaluate-callbackfn-if-key-present.js

@@ -1,7 +1,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Does not evaluate the callback function if the key is already in the map.
 info: |
@@ -13,25 +13,30 @@ info: |
   6. Let value be ? Call(callbackfn, undefined, « key »).
   ...
 features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
-var map = new Map([
+const obj1 = {};
-  [1, 0]
+const obj2 = {};
-]);
+const obj3 = {};
+const obj4 = {};
+const map = new WeakMap();
+map.set(obj1, 0);
 
+let callbackCalls = 0;
 function callback() {
-    throw new Error('Callbackfn should not be evaluated if key is present');
+  callbackCalls += 1;
+  throw new Error('Callbackfn should not be evaluated if key is present');
 }
 
-assert.sameValue(map.getOrInsertComputed(1, callback), 0);
+assert.sameValue(map.getOrInsertComputed(obj1, callback), 0);
 
-map.set(2, 1);
+map.set(obj2, 1);
-assert.sameValue(map.getOrInsertComputed(2, callback), 1);
+assert.sameValue(map.getOrInsertComputed(obj2, callback), 1);
 
-map.set(3, 2);
+map.set(obj3, 2);
-assert.sameValue(map.getOrInsertComputed(3, callback), 2);
+assert.sameValue(map.getOrInsertComputed(obj3, callback), 2);
 
 assert.throws(Error, function() {
-  map.getOrInsertComputed(4, callback)
+  map.getOrInsertComputed(obj4, callback)
 }, Error);
 
+assert.sameValue(callbackCalls, 1);

test/built-ins/WeakMap/prototype/getOrInsertComputed/does-not-have-weakmapdata-internal-slot-array.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
 info: |
@@ -11,15 +11,14 @@ info: |
   ...
   2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
   ...
-features: [upsert]
+features: [upsert, WeakMap]
-flags: [noStrict]
 ---*/
 assert.throws(TypeError, function() {
   WeakMap.prototype.getOrInsertComputed.call([], {}, () => 1);
 });
 
+var map = new WeakMap();
 assert.throws(TypeError, function() {
-  var map = new WeakMap();
   map.getOrInsertComputed.call([], {}, () => 1);
 });
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/does-not-have-weakmapdata-internal-slot-map.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
 info: |
@@ -11,15 +11,14 @@ info: |
   ...
   2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
   ...
-features: [Map, upsert]
+features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
 assert.throws(TypeError, function() {
   WeakMap.prototype.getOrInsertComputed.call(new Map(), {}, () => 1);
 });
 
+var map = new WeakMap();
 assert.throws(TypeError, function() {
-  var map = new WeakMap();
   map.getOrInsertComputed.call(new Map(), {}, () => 1);
 });
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/does-not-have-weakmapdata-internal-slot-object.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
 info: |
@@ -11,15 +11,14 @@ info: |
   ...
   2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
   ...
-features: [upsert]
+features: [upsert, WeakMap]
-flags: [noStrict]
 ---*/
 assert.throws(TypeError, function() {
   WeakMap.prototype.getOrInsertComputed.call({}, {}, () => 1);
 });
 
+var map = new WeakMap();
 assert.throws(TypeError, function() {
-  var map = new WeakMap();
   map.getOrInsertComputed.call({}, {}, () => 1);
 });
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/does-not-have-weakmapdata-internal-slot-set.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
 info: |
@@ -11,15 +11,14 @@ info: |
   ...
   2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
   ...
-features: [Set, upsert]
+features: [Set, WeakMap, upsert]
-flags: [noStrict]
 ---*/
 assert.throws(TypeError, function() {
   WeakMap.prototype.getOrInsertComputed.call(new Set(), {}, () => 1);
 });
 
+var map = new WeakMap();
 assert.throws(TypeError, function() {
-  var map = new WeakMap();
   map.getOrInsertComputed.call(new Set(), {}, () => 1);
 });
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/does-not-have-weakmapdata-internal-slot-weakmap-prototype.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
 info: |
@@ -11,15 +11,14 @@ info: |
   ...
   2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
   ...
-features: [upsert]
+features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
 assert.throws(TypeError, function() {
   WeakMap.prototype.getOrInsertComputed.call(WeakMap.prototype, {}, () => 1);
 });
 
+var map = new WeakMap();
 assert.throws(TypeError, function() {
-  var map = new WeakMap();
   map.getOrInsertComputed.call(WeakMap.prototype, {}, () => 1);
 });
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/getOrInsertComputed.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   WeakMap.prototype.getOrInsertComputed property descriptor
 info: |
@@ -10,16 +10,9 @@ info: |
 
   17 ECMAScript Standard Built-in Objects
 includes: [propertyHelper.js]
-features: [upsert]
+features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
-assert.sameValue(
+verifyPrimordialCallableProperty(WeakMap.prototype, "getOrInsertComputed", "getOrInsertComputed", 2, {
-  typeof WeakMap.prototype.getOrInsertComputed,
-  'function',
-  'typeof WeakMap.prototype.getOrInsertComputed is "function"'
-);
-
-verifyProperty(WeakMap.prototype, "getOrInsertComputed", {
   value: WeakMap.prototype.getOrInsertComputed,
   writable: true,
   enumerable: false,

test/built-ins/WeakMap/prototype/getOrInsertComputed/not-a-constructor.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   WeakMap.prototype.getOrInsertComputed does not implement [[Construct]], is not new-able
 info: |
@@ -19,7 +19,6 @@ info: |
   ...
 includes: [isConstructor.js]
 features: [Reflect.construct, WeakMap, arrow-function, upsert]
-flags: [noStrict]
 ---*/
 assert.sameValue(
   isConstructor(WeakMap.prototype.getOrInsertComputed),
@@ -27,7 +26,8 @@ assert.sameValue(
   'isConstructor(WeakMap.prototype.getOrInsertComputed) must return false'
 );
 
+let wm = new WeakMap();
 assert.throws(TypeError, () => {
-  let wm = new WeakMap(); new wm.getOrInsertComputed({}, () => 1);
+  new wm.getOrInsertComputed({}, () => 1);
 });
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/not-a-function-callbackfn-throws.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes, Mathias Ness. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws a TypeError if `callbackfn` is not callable.
 info: |
@@ -11,41 +11,45 @@ info: |
   ...
   3. If IsCallable(callbackfn) is false, throw a TypeError exception.
   ...
-features: [Symbol, upsert]
+features: [WeakMap, Symbol, upsert]
-flags: [noStrict]
 ---*/
 var bar = {};
 var m = new WeakMap();
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, 1);
+    m.getOrInsertComputed(bar, 1);
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, "");
+    m.getOrInsertComputed(bar, "");
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, true);
+    m.getOrInsertComputed(bar, true);
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, undefined);
+    m.getOrInsertComputed(bar, undefined);
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, null);
+    m.getOrInsertComputed(bar, null);
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, {});
+    m.getOrInsertComputed(bar, {});
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, []);
+    m.getOrInsertComputed(bar, []);
 });
 
 assert.throws(TypeError, function () {
-    m.getOrInsertComputed.call(m, bar, Symbol());
+    m.getOrInsertComputed(bar, Symbol());
 });
 
+// Check that it also throws if the key is already present (thus it does not try to call the callback)
+m.set(bar, "foo");
+assert.throws(TypeError, function () {
+    m.getOrInsertComputed(bar, 1);
+});

test/built-ins/WeakMap/prototype/getOrInsertComputed/overwrites-mutation-from-callbackfn.js

@@ -1,7 +1,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   If the callbackfn inserts a value on the given key, the value is overwritten.
 info: |
@@ -16,8 +16,7 @@ info: |
   8. Let p be the Record { [[Key]]: key, [[Value]]: value }.
   9. Append p to M.[[WeakMapData]].
   ...
-features: [upsert]
+features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
 var map = new WeakMap();
 var foo = {};

test/built-ins/WeakMap/prototype/getOrInsertComputed/returns-value-if-key-is-not-present-object-key.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Returns the value from the specified Object key
 info: |
@@ -13,7 +13,6 @@ info: |
   9. Append p to M.[[WeakMapData]].
   10. Return value.
 features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
 var foo = {};
 var bar = {};

test/built-ins/WeakMap/prototype/getOrInsertComputed/returns-value-if-key-is-not-present-symbol-key.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Returns the value from the specified Symbol key
 info: |
@@ -13,7 +13,6 @@ info: |
   9. Append p to M.[[WeakMapData]].
   10. Return value.
 features: [Symbol, WeakMap, symbols-as-weakmap-keys, upsert]
-flags: [noStrict]
 ---*/
 var foo = Symbol('a description');
 var bar = Symbol('a description');

test/built-ins/WeakMap/prototype/getOrInsertComputed/returns-value-if-key-is-present-object-key.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Returns the value from the specified Object key
 info: |
@@ -13,7 +13,6 @@ info: |
     a. If p.[[Key]] is not empty and SameValue(p.[[Key]], key) is true, return p.[[Value]].
   ...
 features: [WeakMap, upsert]
-flags: [noStrict]
 ---*/
 var foo = {};
 var bar = {};

test/built-ins/WeakMap/prototype/getOrInsertComputed/returns-value-if-key-is-present-symbol-key.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Returns the value from the specified Symbol key
 info: |
@@ -14,7 +14,6 @@ info: |
   10. Return value.
 
 features: [Symbol, WeakMap, symbols-as-weakmap-keys, upsert]
-flags: [noStrict]
 ---*/
 var foo = Symbol('a description');
 var bar = Symbol('a description');

test/built-ins/WeakMap/prototype/getOrInsertComputed/this-not-object-throw.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes, Sune Eriksson Lianes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws a TypeError if `this` is not an Object.
 info: |
@@ -11,8 +11,7 @@ info: |
   1. Let M be the this value
   2. Perform ? RequireInternalSlot(M, [[WeakMapData]])
   ...
-features: [Symbol, upsert]
+features: [WeakMap, Symbol, upsert]
-flags: [noStrict]
 ---*/
 var m = new WeakMap();
 

test/built-ins/WeakMap/prototype/getOrInsertComputed/throw-if-key-cannot-be-held-weakly.js

@@ -2,7 +2,7 @@
 // Copyright (C) 2025 Jonas Haukenes. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-esid: proposal-upsert
+esid: sec-weakmap.prototype.getorinsertcomputed
 description: |
   Throws TypeError if key cannot be held weakly.
 info: |
@@ -12,7 +12,6 @@ info: |
   4. If CanBeHeldWeakly(_key_) is *false*, throw a *TypeError* exception.
   ...
 features: [Symbol, WeakMap, upsert]
-flags: [noStrict]
 ---*/
 var s = new WeakMap();
 

test/staging/upsert/WeakMap/getOrInsertComputed/length.js

@@ -1,22 +0,0 @@
-// Copyright (C) 2015 the V8 project authors. All rights reserved.
-// Copyright (C) 2025 Jonas Haukenes. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-/*---
-esid: proposal-upsert
-description: |
-  WeakMap.prototype.getOrInsertComputed.length descriptor
-info: |
-  WeakMap.prototype.getOrInsertComputed ( key, callbackfn )
-
-  17 ECMAScript Standard Built-in Objects
-includes: [propertyHelper.js]
-features: [upsert]
-flags: [noStrict]
----*/
-verifyProperty(WeakMap.prototype.getOrInsertComputed, "length", {
-  value: 2,
-  writable: false,
-  enumerable: false,
-  configurable: true
-});
-

test/staging/upsert/WeakMap/getOrInsertComputed/name.js

@@ -1,22 +0,0 @@
-// Copyright (C) 2015 the V8 project authors. All rights reserved.
-// Copyright (C) 2025 Jonas Haukenes. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-/*---
-esid: proposal-upsert
-description: |
-  WeakMap.prototype.getOrInsertComputed.name descriptor
-info: |
-  WeakMap.prototype.getOrInsertComputed ( key, callbackfn )
-
-  17 ECMAScript Standard Built-in Objects
-includes: [propertyHelper.js]
-features: [upsert]
-flags: [noStrict]
----*/
-verifyProperty(Map.prototype.getOrInsertComputed, "name", {
-  value: "getOrInsertComputed",
-  writable: false,
-  enumerable: false,
-  configurable: true
-});
-