Skip to content
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

Fix isGenericReducibleType to allow HKT technique to function again #54112

Merged
merged 4 commits into from
May 20, 2023
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/compiler/checker.ts
Original file line number Diff line number Diff line change
Expand Up @@ -14078,7 +14078,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
else if (type !== firstType) {
checkFlags |= CheckFlags.HasNonUniformType;
}
if (isLiteralType(type) || isPatternLiteralType(type) || type === uniqueLiteralType) {
if (isLiteralType(type) || isPatternLiteralType(type)) {
checkFlags |= CheckFlags.HasLiteralType;
}
if (type.flags & TypeFlags.Never && type !== uniqueLiteralType) {
Expand Down
100 changes: 100 additions & 0 deletions tests/baselines/reference/inferenceAndHKTs.symbols
Original file line number Diff line number Diff line change
@@ -0,0 +1,100 @@
=== tests/cases/compiler/inferenceAndHKTs.ts ===
// Repro from #53970

export interface TypeLambda {
>TypeLambda : Symbol(TypeLambda, Decl(inferenceAndHKTs.ts, 0, 0))

readonly A: unknown;
>A : Symbol(TypeLambda.A, Decl(inferenceAndHKTs.ts, 2, 29))
}

export interface TypeClass<F extends TypeLambda> {
>TypeClass : Symbol(TypeClass, Decl(inferenceAndHKTs.ts, 4, 1))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 6, 27))
>TypeLambda : Symbol(TypeLambda, Decl(inferenceAndHKTs.ts, 0, 0))

readonly _F: F;
>_F : Symbol(TypeClass._F, Decl(inferenceAndHKTs.ts, 6, 50))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 6, 27))
}

export type Apply<F extends TypeLambda, A> = F extends { readonly type: unknown }
>Apply : Symbol(Apply, Decl(inferenceAndHKTs.ts, 8, 1))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 10, 18))
>TypeLambda : Symbol(TypeLambda, Decl(inferenceAndHKTs.ts, 0, 0))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 10, 39))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 10, 18))
>type : Symbol(type, Decl(inferenceAndHKTs.ts, 10, 56))

? (F & { readonly A: A })['type']
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 10, 18))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 11, 12))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 10, 39))

: { readonly F: F, readonly A: A };
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 12, 7))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 10, 18))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 12, 22))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 10, 39))

export interface T<A> {
>T : Symbol(T, Decl(inferenceAndHKTs.ts, 12, 39))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 14, 19))

value: A;
>value : Symbol(T.value, Decl(inferenceAndHKTs.ts, 14, 23))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 14, 19))
}

export interface TTypeLambda extends TypeLambda {
>TTypeLambda : Symbol(TTypeLambda, Decl(inferenceAndHKTs.ts, 16, 1))
>TypeLambda : Symbol(TypeLambda, Decl(inferenceAndHKTs.ts, 0, 0))

readonly type: T<this["A"]>;
>type : Symbol(TTypeLambda.type, Decl(inferenceAndHKTs.ts, 18, 49))
>T : Symbol(T, Decl(inferenceAndHKTs.ts, 12, 39))
}

export declare const map: <F extends TypeLambda>(F: TypeClass<F>) => <A, B>(a: Apply<F, A>, f: (a: A) => B) => Apply<F, B>;
>map : Symbol(map, Decl(inferenceAndHKTs.ts, 22, 20))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 22, 27), Decl(inferenceAndHKTs.ts, 22, 49))
>TypeLambda : Symbol(TypeLambda, Decl(inferenceAndHKTs.ts, 0, 0))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 22, 27), Decl(inferenceAndHKTs.ts, 22, 49))
>TypeClass : Symbol(TypeClass, Decl(inferenceAndHKTs.ts, 4, 1))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 22, 27), Decl(inferenceAndHKTs.ts, 22, 49))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 22, 70))
>B : Symbol(B, Decl(inferenceAndHKTs.ts, 22, 72))
>a : Symbol(a, Decl(inferenceAndHKTs.ts, 22, 76))
>Apply : Symbol(Apply, Decl(inferenceAndHKTs.ts, 8, 1))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 22, 27), Decl(inferenceAndHKTs.ts, 22, 49))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 22, 70))
>f : Symbol(f, Decl(inferenceAndHKTs.ts, 22, 91))
>a : Symbol(a, Decl(inferenceAndHKTs.ts, 22, 96))
>A : Symbol(A, Decl(inferenceAndHKTs.ts, 22, 70))
>B : Symbol(B, Decl(inferenceAndHKTs.ts, 22, 72))
>Apply : Symbol(Apply, Decl(inferenceAndHKTs.ts, 8, 1))
>F : Symbol(F, Decl(inferenceAndHKTs.ts, 22, 27), Decl(inferenceAndHKTs.ts, 22, 49))
>B : Symbol(B, Decl(inferenceAndHKTs.ts, 22, 72))

declare const typeClass: TypeClass<TTypeLambda>;
>typeClass : Symbol(typeClass, Decl(inferenceAndHKTs.ts, 24, 13))
>TypeClass : Symbol(TypeClass, Decl(inferenceAndHKTs.ts, 4, 1))
>TTypeLambda : Symbol(TTypeLambda, Decl(inferenceAndHKTs.ts, 16, 1))

declare const a: T<number>;
>a : Symbol(a, Decl(inferenceAndHKTs.ts, 26, 13))
>T : Symbol(T, Decl(inferenceAndHKTs.ts, 12, 39))

const x1 = map(typeClass);
>x1 : Symbol(x1, Decl(inferenceAndHKTs.ts, 28, 5))
>map : Symbol(map, Decl(inferenceAndHKTs.ts, 22, 20))
>typeClass : Symbol(typeClass, Decl(inferenceAndHKTs.ts, 24, 13))

const x2 = map(typeClass)(a, (_) => _); // T<number>
>x2 : Symbol(x2, Decl(inferenceAndHKTs.ts, 29, 5))
>map : Symbol(map, Decl(inferenceAndHKTs.ts, 22, 20))
>typeClass : Symbol(typeClass, Decl(inferenceAndHKTs.ts, 24, 13))
>a : Symbol(a, Decl(inferenceAndHKTs.ts, 26, 13))
>_ : Symbol(_, Decl(inferenceAndHKTs.ts, 29, 30))
>_ : Symbol(_, Decl(inferenceAndHKTs.ts, 29, 30))

64 changes: 64 additions & 0 deletions tests/baselines/reference/inferenceAndHKTs.types
Original file line number Diff line number Diff line change
@@ -0,0 +1,64 @@
=== tests/cases/compiler/inferenceAndHKTs.ts ===
// Repro from #53970

export interface TypeLambda {
readonly A: unknown;
>A : unknown
}

export interface TypeClass<F extends TypeLambda> {
readonly _F: F;
>_F : F
}

export type Apply<F extends TypeLambda, A> = F extends { readonly type: unknown }
>Apply : Apply<F, A>
>type : unknown

? (F & { readonly A: A })['type']
>A : A

: { readonly F: F, readonly A: A };
>F : F
>A : A

export interface T<A> {
value: A;
>value : A
}

export interface TTypeLambda extends TypeLambda {
readonly type: T<this["A"]>;
>type : T<this["A"]>
}

export declare const map: <F extends TypeLambda>(F: TypeClass<F>) => <A, B>(a: Apply<F, A>, f: (a: A) => B) => Apply<F, B>;
>map : <F extends TypeLambda>(F: TypeClass<F>) => <A, B>(a: Apply<F, A>, f: (a: A) => B) => Apply<F, B>
>F : TypeClass<F>
>a : Apply<F, A>
>f : (a: A) => B
>a : A

declare const typeClass: TypeClass<TTypeLambda>;
>typeClass : TypeClass<TTypeLambda>

declare const a: T<number>;
>a : T<number>

const x1 = map(typeClass);
>x1 : <A, B>(a: T<A>, f: (a: A) => B) => T<B>
>map(typeClass) : <A, B>(a: T<A>, f: (a: A) => B) => T<B>
>map : <F extends TypeLambda>(F: TypeClass<F>) => <A, B>(a: Apply<F, A>, f: (a: A) => B) => Apply<F, B>
>typeClass : TypeClass<TTypeLambda>

const x2 = map(typeClass)(a, (_) => _); // T<number>
>x2 : T<number>
>map(typeClass)(a, (_) => _) : T<number>
>map(typeClass) : <A, B>(a: T<A>, f: (a: A) => B) => T<B>
>map : <F extends TypeLambda>(F: TypeClass<F>) => <A, B>(a: Apply<F, A>, f: (a: A) => B) => Apply<F, B>
>typeClass : TypeClass<TTypeLambda>
>a : T<number>
>(_) => _ : (_: number) => number
>_ : number
>_ : number

33 changes: 33 additions & 0 deletions tests/cases/compiler/inferenceAndHKTs.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,33 @@
// @strict: true
// @noEmit: true

// Repro from #53970

export interface TypeLambda {
readonly A: unknown;
}

export interface TypeClass<F extends TypeLambda> {
readonly _F: F;
}

export type Apply<F extends TypeLambda, A> = F extends { readonly type: unknown }
? (F & { readonly A: A })['type']
: { readonly F: F, readonly A: A };

export interface T<A> {
value: A;
}

export interface TTypeLambda extends TypeLambda {
readonly type: T<this["A"]>;
}

export declare const map: <F extends TypeLambda>(F: TypeClass<F>) => <A, B>(a: Apply<F, A>, f: (a: A) => B) => Apply<F, B>;

declare const typeClass: TypeClass<TTypeLambda>;

declare const a: T<number>;

const x1 = map(typeClass);
const x2 = map(typeClass)(a, (_) => _); // T<number>