| adds-object-element.js |
---
esid: proposal-upsert
description: >
Adds a value with an Object key if key is not already in the map.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
5. Let p be the Record {[[Key]]: key, [[Value]]: value}.
6. Append p to M.[[WeakMapData]].
...
features: [WeakMap]
--- |
919 |
| adds-symbol-element.js |
---
esid: proposal-upsert
description: >
Adds a value with a Symbol key if key is not already in the map.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
5. Let p be the Record {[[Key]]: key, [[Value]]: value}.
6. Append p to M.[[WeakMapData]].
...
features: [Symbol, WeakMap, symbols-as-weakmap-keys]
--- |
1262 |
| does-not-have-weakmapdata-internal-slot-array.js |
---
esid: proposal-upsert
description: >
Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
1. Let M be the this value.
2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
...
--- |
796 |
| does-not-have-weakmapdata-internal-slot-map.js |
---
esid: proposal-upsert
description: >
Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
1. Let M be the this value.
2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
...
features: [Map]
--- |
825 |
| does-not-have-weakmapdata-internal-slot-object.js |
---
esid: proposal-upsert
description: >
Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
1. Let M be the this value.
2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
...
--- |
795 |
| does-not-have-weakmapdata-internal-slot-set.js |
---
esid: proposal-upsert
description: >
Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
1. Let M be the this value.
2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
...
features: [Set]
--- |
825 |
| does-not-have-weakmapdata-internal-slot-weakmap-prototype.js |
---
esid: proposal-upsert
description: >
Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
1. Let M be the this value.
2. Perform ? RequireInternalSlot(M, [[WeakMapData]]).
...
--- |
825 |
| getOrInsert.js |
---
esid: proposal-upsert
description: WeakMap.prototype.getOrInsert property descriptor
info: |
WeakMap.prototype.getOrInsert ( key, value )
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
--- |
838 |
| length.js |
---
esid: proposal-upsert
description: WeakMap.prototype.getOrInsert.length descriptor
info: |
WeakMap.prototype.getOrInsert ( key, value )
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
--- |
693 |
| name.js |
---
esid: proposal-upsert
description: WeakMap.prototype.getOrInsert.name descriptor
info: |
WeakMap.prototype.getOrInsert ( key, value )
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
--- |
697 |
| not-a-constructor.js |
---
esid: proposal-upsert
description: >
WeakMap.prototype.getOrInsert does not implement [[Construct]], is not new-able
info: |
ECMAScript Function Objects
Built-in function objects that are not identified as constructors do not
implement the [[Construct]] internal method unless otherwise specified in
the description of a particular function.
sec-evaluatenew
...
7. If IsConstructor(constructor) is false, throw a TypeError exception.
...
includes: [isConstructor.js]
features: [Reflect.construct, WeakMap, arrow-function]
--- |
1085 |
| returns-value-if-key-is-not-present-object-key.js |
---
esid: proposal-upsert
description: >
Returns the value given as parameter when key is not present.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
4. For each Record { [[Key]], [[Value]] } p of M.[[WeakMapData]], do
a. If p.[[Key]] is not empty and SameValue(p.[[Key]], key) is true, return p.[[Value]].
5. Let p be the Record { [[Key]]: key, [[Value]]: value }.
6. Append p to M.[[WeakMapData]].
7. Return value.
features: [WeakMap]
--- |
961 |
| returns-value-if-key-is-not-present-symbol-key.js |
---
esid: proposal-upsert
description: >
Returns the value given as parameter when key is not present.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
4. For each Record { [[Key]], [[Value]] } p of M.[[WeakMapData]], do
a. If p.[[Key]] is not empty and SameValue(p.[[Key]], key) is true, return p.[[Value]].
5. Let p be the Record { [[Key]]: key, [[Value]]: value }.
6. Append p to M.[[WeakMapData]].
7. Return value.
features: [Symbol, WeakMap, symbols-as-weakmap-keys]
--- |
1451 |
| returns-value-if-key-is-present-object-key.js |
---
esid: proposal-upsert
description: >
Returns the value from the specified Object key
info: |
WeakMap.prototype.getOrInsert ( key, value)
...
4. For each Record { [[Key]], [[Value]] } p of M.[[WeakMapData]], do
a. If p.[[Key]] is not empty and SameValue(p.[[Key]], key) is true, return p.[[Value]].
...
features: [WeakMap]
--- |
884 |
| returns-value-if-key-is-present-symbol-key.js |
---
esid: proposal-upsert
description: >
Returns the value from the specified Symbol key
info: |
WeakMap.prototype.getOrInsert ( key, value)
...
4. For each Record { [[Key]], [[Value]] } p of M.[[WeakMapData]], do
a. If p.[[Key]] is not empty and SameValue(p.[[Key]], key) is true, return p.[[Value]].
...
features: [Symbol, WeakMap, symbols-as-weakmap-keys]
--- |
1395 |
| this-not-object-throw.js |
---
esid: proposal-upsert
description: >
Throws a TypeError if `this` is not an Object.
info: |
WeakMap.prototype.getOrInsert ( key , value )
1. Let M be the this value
2. Perform ? RequireInternalSlot(M, [[WeakMapData]])
...
features: [Symbol]
--- |
1245 |
| throw-if-key-cannot-be-held-weakly.js |
---
esid: proposal-upsert
description: >
Throws TypeError if key cannot be held weakly.
info: |
WeakMap.prototype.getOrInsert ( key, value )
...
3. If CanBeHeldWeakly(key) is false, throw a TypeError exception.
...
features: [Symbol, WeakMap]
--- |
1139 |