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lib Fix Part 1/6 – WeakMap constructor #50449

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merged 2 commits into from
Feb 28, 2023
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lib Fix Part 1/6 – WeakMap constructor #50449

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179602b
lib Types and Documentations Fix
graphemecluster Aug 25, 2022
2ed55cd
Merge branch 'main' into implement49733-part1
sandersn Feb 28, 2023
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2 changes: 1 addition & 1 deletion src/lib/es2015.collection.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,7 @@ interface WeakMap<K extends object, V> {
}

interface WeakMapConstructor {
new <K extends object = object, V = any>(entries?: readonly [K, V][] | null): WeakMap<K, V>;
new <K extends object = object, V = any>(entries?: readonly (readonly [K, V])[] | null): WeakMap<K, V>;
readonly prototype: WeakMap<object, any>;
}
declare var WeakMap: WeakMapConstructor;
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9 changes: 6 additions & 3 deletions tests/baselines/reference/mapConstructorOnReadonlyTuple.js
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@@ -1,7 +1,10 @@
//// [mapConstructorOnReadonlyTuple.ts]
const pairs = [['1', 1], ['2', 2]] as const
new Map(pairs);
const pairs = [[{}, 1], [{}, 2]] as const;
new Map(pairs);
new WeakMap(pairs);


//// [mapConstructorOnReadonlyTuple.js]
const pairs = [['1', 1], ['2', 2]];
const pairs = [[{}, 1], [{}, 2]];
new Map(pairs);
new WeakMap(pairs);
6 changes: 5 additions & 1 deletion tests/baselines/reference/mapConstructorOnReadonlyTuple.symbols
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@@ -1,9 +1,13 @@
=== tests/cases/compiler/mapConstructorOnReadonlyTuple.ts ===
const pairs = [['1', 1], ['2', 2]] as const
const pairs = [[{}, 1], [{}, 2]] as const;
>pairs : Symbol(pairs, Decl(mapConstructorOnReadonlyTuple.ts, 0, 5))
>const : Symbol(const)

new Map(pairs);
>Map : Symbol(Map, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
>pairs : Symbol(pairs, Decl(mapConstructorOnReadonlyTuple.ts, 0, 5))

new WeakMap(pairs);
>WeakMap : Symbol(WeakMap, Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.collection.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
>pairs : Symbol(pairs, Decl(mapConstructorOnReadonlyTuple.ts, 0, 5))

25 changes: 15 additions & 10 deletions tests/baselines/reference/mapConstructorOnReadonlyTuple.types
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@@ -1,17 +1,22 @@
=== tests/cases/compiler/mapConstructorOnReadonlyTuple.ts ===
const pairs = [['1', 1], ['2', 2]] as const
>pairs : readonly [readonly ["1", 1], readonly ["2", 2]]
>[['1', 1], ['2', 2]] as const : readonly [readonly ["1", 1], readonly ["2", 2]]
>[['1', 1], ['2', 2]] : readonly [readonly ["1", 1], readonly ["2", 2]]
>['1', 1] : readonly ["1", 1]
>'1' : "1"
const pairs = [[{}, 1], [{}, 2]] as const;
>pairs : readonly [readonly [{}, 1], readonly [{}, 2]]
>[[{}, 1], [{}, 2]] as const : readonly [readonly [{}, 1], readonly [{}, 2]]
>[[{}, 1], [{}, 2]] : readonly [readonly [{}, 1], readonly [{}, 2]]
>[{}, 1] : readonly [{}, 1]
>{} : {}
>1 : 1
>['2', 2] : readonly ["2", 2]
>'2' : "2"
>[{}, 2] : readonly [{}, 2]
>{} : {}
>2 : 2

new Map(pairs);
>new Map(pairs) : Map<"1" | "2", 1 | 2>
>new Map(pairs) : Map<{}, 1 | 2>
>Map : MapConstructor
>pairs : readonly [readonly ["1", 1], readonly ["2", 2]]
>pairs : readonly [readonly [{}, 1], readonly [{}, 2]]

new WeakMap(pairs);
>new WeakMap(pairs) : WeakMap<{}, 1 | 2>
>WeakMap : WeakMapConstructor
>pairs : readonly [readonly [{}, 1], readonly [{}, 2]]

5 changes: 3 additions & 2 deletions tests/cases/compiler/mapConstructorOnReadonlyTuple.ts
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@@ -1,4 +1,5 @@
// @target: es2015

const pairs = [['1', 1], ['2', 2]] as const
new Map(pairs);
const pairs = [[{}, 1], [{}, 2]] as const;
new Map(pairs);
new WeakMap(pairs);