-
Notifications
You must be signed in to change notification settings - Fork 13.1k
Fix a relationship check for partial generic mapped targets #62724
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Open
Andarist
wants to merge
1
commit into
microsoft:main
Choose a base branch
from
Andarist:fix/generic-mapped-target-fast-path
base: main
Could not load branches
Branch not found: {{ refName }}
Loading
Could not load tags
Nothing to show
Loading
Are you sure you want to change the base?
Some commits from the old base branch may be removed from the timeline,
and old review comments may become outdated.
+322
−7
Open
Changes from all commits
Commits
File filter
Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -23701,8 +23701,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |
| // Check if source type `S` is related to target type `{ [P in Q]: T }` or `{ [P in Q as R]: T}`. | ||
| const keysRemapped = !!target.declaration.nameType; | ||
| const templateType = getTemplateTypeFromMappedType(target); | ||
| const modifiers = getMappedTypeModifiers(target); | ||
| if (!(modifiers & MappedTypeModifiers.ExcludeOptional)) { | ||
| const combinedOptionality = getCombinedMappedTypeOptionality(target); | ||
| if (combinedOptionality !== -1) { | ||
| // If the mapped type has shape `{ [P in Q]: T[P] }`, | ||
| // source `S` is related to target if `T` = `S`, i.e. `S` is related to `{ [P in Q]: S[P] }`. | ||
| if ( | ||
|
|
@@ -23717,7 +23717,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |
| const targetKeys = keysRemapped ? getNameTypeFromMappedType(target)! : getConstraintTypeFromMappedType(target); | ||
| // Type of the keys of source type `S`, i.e. `keyof S`. | ||
| const sourceKeys = getIndexType(source, IndexFlags.NoIndexSignatures); | ||
| const includeOptional = modifiers & MappedTypeModifiers.IncludeOptional; | ||
| const includeOptional = combinedOptionality === 1; | ||
| const filteredByApplicability = includeOptional ? intersectTypes(targetKeys, sourceKeys) : undefined; | ||
| // A source type `S` is related to a target type `{ [P in Q]: T }` if `Q` is related to `keyof S` and `S[Q]` is related to `T`. | ||
| // A source type `S` is related to a target type `{ [P in Q as R]: T }` if `R` is related to `keyof S` and `S[R]` is related to `T. | ||
|
|
@@ -23734,10 +23734,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |
| // Fastpath: When the template type has the form `Obj[P]` where `P` is the mapped type parameter, directly compare source `S` with `Obj` | ||
| // to avoid creating the (potentially very large) number of new intermediate types made by manufacturing `S[P]`. | ||
| const nonNullComponent = extractTypesOfKind(templateType, ~TypeFlags.Nullable); | ||
| if (!keysRemapped && nonNullComponent.flags & TypeFlags.IndexedAccess && (nonNullComponent as IndexedAccessType).indexType === typeParameter) { | ||
| if (result = isRelatedTo(source, (nonNullComponent as IndexedAccessType).objectType, RecursionFlags.Target, reportErrors)) { | ||
| return result; | ||
| } | ||
| if (!keysRemapped && nonNullComponent.flags & TypeFlags.IndexedAccess && (nonNullComponent as IndexedAccessType).indexType === typeParameter && (result = isRelatedTo(source, (nonNullComponent as IndexedAccessType).objectType, RecursionFlags.Target, reportErrors))) { | ||
|
Contributor
Author
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. this simply allows the code to take the slow path if the fast path doesnt return |
||
| return result; | ||
| } | ||
| else { | ||
| // We need to compare the type of a property on the source type `S` to the type of the same property on the target type, | ||
|
|
||
40 changes: 40 additions & 0 deletions
40
tests/baselines/reference/mappedTypeRelationships2.errors.txt
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| mappedTypeRelationships2.ts(21,38): error TS2344: Type 'ABC' does not satisfy the constraint 'WithNumber<Record<keyof T, any>>'. | ||
|
|
||
|
|
||
| ==== mappedTypeRelationships2.ts (1 errors) ==== | ||
| // https://github.com/microsoft/TypeScript/issues/62717 | ||
|
|
||
| type Alias1<T extends object, U extends { [K in keyof T]?: any }> = U; | ||
| type Alias2<T extends object, U extends Partial<Record<keyof T, any>>> = U; | ||
|
|
||
| type AB = { a: string; b: string }; | ||
| type B = { b: string }; | ||
|
|
||
| type Test1 = Alias1<AB, B>; // ok | ||
| type Test2 = Alias2<AB, B>; // ok | ||
|
|
||
| type Test3<T extends AB> = Alias1<T, B>; // ok | ||
| type Test4<T extends AB> = Alias2<T, B>; // ok | ||
|
|
||
| type WithNumber<T> = { [K in keyof T]: T[K] | number }; | ||
| type Alias3<T extends object, U extends WithNumber<Record<keyof T, any>>> = U; | ||
|
|
||
| type ABC = { a: string; b: string; c: string }; | ||
|
|
||
| type Test5 = Alias3<AB, ABC>; // ok | ||
| type Test6<T extends AB> = Alias3<T, ABC>; // error | ||
| ~~~ | ||
| !!! error TS2344: Type 'ABC' does not satisfy the constraint 'WithNumber<Record<keyof T, any>>'. | ||
|
|
||
| type Alias4<T extends object, U extends WithNumber<Partial<Record<keyof T, any>>>> = U; | ||
|
|
||
| type Test7 = Alias4<AB, ABC>; // ok | ||
| type Test8<T extends AB> = Alias4<T, ABC>; // ok | ||
|
|
||
| type Alias5<T extends object, U extends Partial<WithNumber<Record<keyof T, any>>>> = U; | ||
|
|
||
| type Test9 = Alias5<AB, ABC>; // ok | ||
| type Test10<T extends AB> = Alias5<T, ABC>; // ok | ||
|
|
||
| export {}; | ||
|
|
146 changes: 146 additions & 0 deletions
146
tests/baselines/reference/mappedTypeRelationships2.symbols
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| //// [tests/cases/conformance/types/mapped/mappedTypeRelationships2.ts] //// | ||
|
|
||
| === mappedTypeRelationships2.ts === | ||
| // https://github.com/microsoft/TypeScript/issues/62717 | ||
|
|
||
| type Alias1<T extends object, U extends { [K in keyof T]?: any }> = U; | ||
| >Alias1 : Symbol(Alias1, Decl(mappedTypeRelationships2.ts, 0, 0)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 2, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 2, 29)) | ||
| >K : Symbol(K, Decl(mappedTypeRelationships2.ts, 2, 43)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 2, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 2, 29)) | ||
|
|
||
| type Alias2<T extends object, U extends Partial<Record<keyof T, any>>> = U; | ||
| >Alias2 : Symbol(Alias2, Decl(mappedTypeRelationships2.ts, 2, 70)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 3, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 3, 29)) | ||
| >Partial : Symbol(Partial, Decl(lib.es5.d.ts, --, --)) | ||
| >Record : Symbol(Record, Decl(lib.es5.d.ts, --, --)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 3, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 3, 29)) | ||
|
|
||
| type AB = { a: string; b: string }; | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >a : Symbol(a, Decl(mappedTypeRelationships2.ts, 5, 11)) | ||
| >b : Symbol(b, Decl(mappedTypeRelationships2.ts, 5, 22)) | ||
|
|
||
| type B = { b: string }; | ||
| >B : Symbol(B, Decl(mappedTypeRelationships2.ts, 5, 35)) | ||
| >b : Symbol(b, Decl(mappedTypeRelationships2.ts, 6, 10)) | ||
|
|
||
| type Test1 = Alias1<AB, B>; // ok | ||
| >Test1 : Symbol(Test1, Decl(mappedTypeRelationships2.ts, 6, 23)) | ||
| >Alias1 : Symbol(Alias1, Decl(mappedTypeRelationships2.ts, 0, 0)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >B : Symbol(B, Decl(mappedTypeRelationships2.ts, 5, 35)) | ||
|
|
||
| type Test2 = Alias2<AB, B>; // ok | ||
| >Test2 : Symbol(Test2, Decl(mappedTypeRelationships2.ts, 8, 27)) | ||
| >Alias2 : Symbol(Alias2, Decl(mappedTypeRelationships2.ts, 2, 70)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >B : Symbol(B, Decl(mappedTypeRelationships2.ts, 5, 35)) | ||
|
|
||
| type Test3<T extends AB> = Alias1<T, B>; // ok | ||
| >Test3 : Symbol(Test3, Decl(mappedTypeRelationships2.ts, 9, 27)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 11, 11)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >Alias1 : Symbol(Alias1, Decl(mappedTypeRelationships2.ts, 0, 0)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 11, 11)) | ||
| >B : Symbol(B, Decl(mappedTypeRelationships2.ts, 5, 35)) | ||
|
|
||
| type Test4<T extends AB> = Alias2<T, B>; // ok | ||
| >Test4 : Symbol(Test4, Decl(mappedTypeRelationships2.ts, 11, 40)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 12, 11)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >Alias2 : Symbol(Alias2, Decl(mappedTypeRelationships2.ts, 2, 70)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 12, 11)) | ||
| >B : Symbol(B, Decl(mappedTypeRelationships2.ts, 5, 35)) | ||
|
|
||
| type WithNumber<T> = { [K in keyof T]: T[K] | number }; | ||
| >WithNumber : Symbol(WithNumber, Decl(mappedTypeRelationships2.ts, 12, 40)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 14, 16)) | ||
| >K : Symbol(K, Decl(mappedTypeRelationships2.ts, 14, 24)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 14, 16)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 14, 16)) | ||
| >K : Symbol(K, Decl(mappedTypeRelationships2.ts, 14, 24)) | ||
|
|
||
| type Alias3<T extends object, U extends WithNumber<Record<keyof T, any>>> = U; | ||
| >Alias3 : Symbol(Alias3, Decl(mappedTypeRelationships2.ts, 14, 55)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 15, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 15, 29)) | ||
| >WithNumber : Symbol(WithNumber, Decl(mappedTypeRelationships2.ts, 12, 40)) | ||
| >Record : Symbol(Record, Decl(lib.es5.d.ts, --, --)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 15, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 15, 29)) | ||
|
|
||
| type ABC = { a: string; b: string; c: string }; | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
| >a : Symbol(a, Decl(mappedTypeRelationships2.ts, 17, 12)) | ||
| >b : Symbol(b, Decl(mappedTypeRelationships2.ts, 17, 23)) | ||
| >c : Symbol(c, Decl(mappedTypeRelationships2.ts, 17, 34)) | ||
|
|
||
| type Test5 = Alias3<AB, ABC>; // ok | ||
| >Test5 : Symbol(Test5, Decl(mappedTypeRelationships2.ts, 17, 47)) | ||
| >Alias3 : Symbol(Alias3, Decl(mappedTypeRelationships2.ts, 14, 55)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
|
|
||
| type Test6<T extends AB> = Alias3<T, ABC>; // error | ||
| >Test6 : Symbol(Test6, Decl(mappedTypeRelationships2.ts, 19, 29)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 20, 11)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >Alias3 : Symbol(Alias3, Decl(mappedTypeRelationships2.ts, 14, 55)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 20, 11)) | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
|
|
||
| type Alias4<T extends object, U extends WithNumber<Partial<Record<keyof T, any>>>> = U; | ||
| >Alias4 : Symbol(Alias4, Decl(mappedTypeRelationships2.ts, 20, 42)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 22, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 22, 29)) | ||
| >WithNumber : Symbol(WithNumber, Decl(mappedTypeRelationships2.ts, 12, 40)) | ||
| >Partial : Symbol(Partial, Decl(lib.es5.d.ts, --, --)) | ||
| >Record : Symbol(Record, Decl(lib.es5.d.ts, --, --)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 22, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 22, 29)) | ||
|
|
||
| type Test7 = Alias4<AB, ABC>; // ok | ||
| >Test7 : Symbol(Test7, Decl(mappedTypeRelationships2.ts, 22, 87)) | ||
| >Alias4 : Symbol(Alias4, Decl(mappedTypeRelationships2.ts, 20, 42)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
|
|
||
| type Test8<T extends AB> = Alias4<T, ABC>; // ok | ||
| >Test8 : Symbol(Test8, Decl(mappedTypeRelationships2.ts, 24, 29)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 25, 11)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >Alias4 : Symbol(Alias4, Decl(mappedTypeRelationships2.ts, 20, 42)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 25, 11)) | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
|
|
||
| type Alias5<T extends object, U extends Partial<WithNumber<Record<keyof T, any>>>> = U; | ||
| >Alias5 : Symbol(Alias5, Decl(mappedTypeRelationships2.ts, 25, 42)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 27, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 27, 29)) | ||
| >Partial : Symbol(Partial, Decl(lib.es5.d.ts, --, --)) | ||
| >WithNumber : Symbol(WithNumber, Decl(mappedTypeRelationships2.ts, 12, 40)) | ||
| >Record : Symbol(Record, Decl(lib.es5.d.ts, --, --)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 27, 12)) | ||
| >U : Symbol(U, Decl(mappedTypeRelationships2.ts, 27, 29)) | ||
|
|
||
| type Test9 = Alias5<AB, ABC>; // ok | ||
| >Test9 : Symbol(Test9, Decl(mappedTypeRelationships2.ts, 27, 87)) | ||
| >Alias5 : Symbol(Alias5, Decl(mappedTypeRelationships2.ts, 25, 42)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
|
|
||
| type Test10<T extends AB> = Alias5<T, ABC>; // ok | ||
| >Test10 : Symbol(Test10, Decl(mappedTypeRelationships2.ts, 29, 29)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 30, 12)) | ||
| >AB : Symbol(AB, Decl(mappedTypeRelationships2.ts, 3, 75)) | ||
| >Alias5 : Symbol(Alias5, Decl(mappedTypeRelationships2.ts, 25, 42)) | ||
| >T : Symbol(T, Decl(mappedTypeRelationships2.ts, 30, 12)) | ||
| >ABC : Symbol(ABC, Decl(mappedTypeRelationships2.ts, 15, 78)) | ||
|
|
||
| export {}; | ||
|
|
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| //// [tests/cases/conformance/types/mapped/mappedTypeRelationships2.ts] //// | ||
|
|
||
| === mappedTypeRelationships2.ts === | ||
| // https://github.com/microsoft/TypeScript/issues/62717 | ||
|
|
||
| type Alias1<T extends object, U extends { [K in keyof T]?: any }> = U; | ||
| >Alias1 : U | ||
| > : ^ | ||
|
|
||
| type Alias2<T extends object, U extends Partial<Record<keyof T, any>>> = U; | ||
| >Alias2 : U | ||
| > : ^ | ||
|
|
||
| type AB = { a: string; b: string }; | ||
| >AB : AB | ||
| > : ^^ | ||
| >a : string | ||
| > : ^^^^^^ | ||
| >b : string | ||
| > : ^^^^^^ | ||
|
|
||
| type B = { b: string }; | ||
| >B : B | ||
| > : ^ | ||
| >b : string | ||
| > : ^^^^^^ | ||
|
|
||
| type Test1 = Alias1<AB, B>; // ok | ||
| >Test1 : B | ||
| > : ^ | ||
|
|
||
| type Test2 = Alias2<AB, B>; // ok | ||
| >Test2 : B | ||
| > : ^ | ||
|
|
||
| type Test3<T extends AB> = Alias1<T, B>; // ok | ||
| >Test3 : B | ||
| > : ^ | ||
|
|
||
| type Test4<T extends AB> = Alias2<T, B>; // ok | ||
| >Test4 : B | ||
| > : ^ | ||
|
|
||
| type WithNumber<T> = { [K in keyof T]: T[K] | number }; | ||
| >WithNumber : WithNumber<T> | ||
| > : ^^^^^^^^^^^^^ | ||
|
|
||
| type Alias3<T extends object, U extends WithNumber<Record<keyof T, any>>> = U; | ||
| >Alias3 : U | ||
| > : ^ | ||
|
|
||
| type ABC = { a: string; b: string; c: string }; | ||
| >ABC : ABC | ||
| > : ^^^ | ||
| >a : string | ||
| > : ^^^^^^ | ||
| >b : string | ||
| > : ^^^^^^ | ||
| >c : string | ||
| > : ^^^^^^ | ||
|
|
||
| type Test5 = Alias3<AB, ABC>; // ok | ||
| >Test5 : ABC | ||
| > : ^^^ | ||
|
|
||
| type Test6<T extends AB> = Alias3<T, ABC>; // error | ||
| >Test6 : ABC | ||
| > : ^^^ | ||
|
|
||
| type Alias4<T extends object, U extends WithNumber<Partial<Record<keyof T, any>>>> = U; | ||
| >Alias4 : U | ||
| > : ^ | ||
|
|
||
| type Test7 = Alias4<AB, ABC>; // ok | ||
| >Test7 : ABC | ||
| > : ^^^ | ||
|
|
||
| type Test8<T extends AB> = Alias4<T, ABC>; // ok | ||
| >Test8 : ABC | ||
| > : ^^^ | ||
|
|
||
| type Alias5<T extends object, U extends Partial<WithNumber<Record<keyof T, any>>>> = U; | ||
| >Alias5 : U | ||
| > : ^ | ||
|
|
||
| type Test9 = Alias5<AB, ABC>; // ok | ||
| >Test9 : ABC | ||
| > : ^^^ | ||
|
|
||
| type Test10<T extends AB> = Alias5<T, ABC>; // ok | ||
| >Test10 : ABC | ||
| > : ^^^ | ||
|
|
||
| export {}; | ||
|
|
36 changes: 36 additions & 0 deletions
36
tests/cases/conformance/types/mapped/mappedTypeRelationships2.ts
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| // @strict: true | ||
| // @noEmit: true | ||
|
|
||
| // https://github.com/microsoft/TypeScript/issues/62717 | ||
|
|
||
| type Alias1<T extends object, U extends { [K in keyof T]?: any }> = U; | ||
| type Alias2<T extends object, U extends Partial<Record<keyof T, any>>> = U; | ||
|
|
||
| type AB = { a: string; b: string }; | ||
| type B = { b: string }; | ||
|
|
||
| type Test1 = Alias1<AB, B>; // ok | ||
| type Test2 = Alias2<AB, B>; // ok | ||
|
|
||
| type Test3<T extends AB> = Alias1<T, B>; // ok | ||
| type Test4<T extends AB> = Alias2<T, B>; // ok | ||
|
|
||
| type WithNumber<T> = { [K in keyof T]: T[K] | number }; | ||
| type Alias3<T extends object, U extends WithNumber<Record<keyof T, any>>> = U; | ||
|
|
||
| type ABC = { a: string; b: string; c: string }; | ||
|
|
||
| type Test5 = Alias3<AB, ABC>; // ok | ||
| type Test6<T extends AB> = Alias3<T, ABC>; // error | ||
|
|
||
| type Alias4<T extends object, U extends WithNumber<Partial<Record<keyof T, any>>>> = U; | ||
|
|
||
| type Test7 = Alias4<AB, ABC>; // ok | ||
| type Test8<T extends AB> = Alias4<T, ABC>; // ok | ||
|
|
||
| type Alias5<T extends object, U extends Partial<WithNumber<Record<keyof T, any>>>> = U; | ||
|
|
||
| type Test9 = Alias5<AB, ABC>; // ok | ||
| type Test10<T extends AB> = Alias5<T, ABC>; // ok | ||
|
|
||
| export {}; |
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
This is an extra fix that is not needed for the original repro. I just noticed that those 2 behaved differently:
WithNumber<Partial<Record<keyof T, any>>>vsPartial<WithNumber<Record<keyof T, any>>>. So to fix that ordering difference, I included this change here