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=== tests/cases/compiler/conditionalTypeAssignabilityWhenDeferred.ts ===
export type FilterPropsByType<T, TT> = {
>FilterPropsByType : Symbol(FilterPropsByType, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 0))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 30))
>TT : Symbol(TT, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 32))
[K in keyof T]: T[K] extends TT ? K : never
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 1, 3))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 30))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 30))
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 1, 3))
>TT : Symbol(TT, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 32))
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 1, 3))
}[keyof T];
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 30))
function select<
>select : Symbol(select, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 2, 11))
T extends string | number,
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 4, 16))
TList extends object,
>TList : Symbol(TList, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 5, 28))
TValueProp extends FilterPropsByType<TList, T>
>TValueProp : Symbol(TValueProp, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 6, 23))
>FilterPropsByType : Symbol(FilterPropsByType, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 0, 0))
>TList : Symbol(TList, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 5, 28))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 4, 16))
>(property: T, list: TList[], valueProp: TValueProp) {}
>property : Symbol(property, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 8, 2))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 4, 16))
>list : Symbol(list, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 8, 14))
>TList : Symbol(TList, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 5, 28))
>valueProp : Symbol(valueProp, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 8, 29))
>TValueProp : Symbol(TValueProp, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 6, 23))
export function func<XX extends string>(x: XX, tipos: { value: XX }[]) {
>func : Symbol(func, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 8, 55))
>XX : Symbol(XX, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 21))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 40))
>XX : Symbol(XX, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 21))
>tipos : Symbol(tipos, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 46))
>value : Symbol(value, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 55))
>XX : Symbol(XX, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 21))
select(x, tipos, "value");
>select : Symbol(select, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 2, 11))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 40))
>tipos : Symbol(tipos, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 10, 46))
}
declare function onlyNullablePlease<T extends null extends T ? any : never>(
>onlyNullablePlease : Symbol(onlyNullablePlease, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 12, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 14, 36))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 14, 36))
value: T
>value : Symbol(value, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 14, 76))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 14, 36))
): void;
declare function onlyNullablePlease2<
>onlyNullablePlease2 : Symbol(onlyNullablePlease2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 16, 8))
T extends [null] extends [T] ? any : never
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 18, 37))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 18, 37))
>(value: T): void;
>value : Symbol(value, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 20, 2))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 18, 37))
declare var z: string | null;
>z : Symbol(z, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 22, 11))
onlyNullablePlease(z); // works as expected
>onlyNullablePlease : Symbol(onlyNullablePlease, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 12, 1))
>z : Symbol(z, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 22, 11))
onlyNullablePlease2(z); // works as expected
>onlyNullablePlease2 : Symbol(onlyNullablePlease2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 16, 8))
>z : Symbol(z, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 22, 11))
declare var y: string;
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 26, 11))
onlyNullablePlease(y); // error as expected
>onlyNullablePlease : Symbol(onlyNullablePlease, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 12, 1))
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 26, 11))
onlyNullablePlease2(y); // error as expected
>onlyNullablePlease2 : Symbol(onlyNullablePlease2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 16, 8))
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 26, 11))
function f<T>(t: T) {
>f : Symbol(f, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 28, 23))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 30, 11))
>t : Symbol(t, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 30, 14))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 30, 11))
var x: T | null = Math.random() > 0.5 ? null : t;
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 31, 5))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 30, 11))
>Math.random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
>Math : Symbol(Math, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
>t : Symbol(t, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 30, 14))
onlyNullablePlease(x); // should work
>onlyNullablePlease : Symbol(onlyNullablePlease, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 12, 1))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 31, 5))
onlyNullablePlease2(x); // should work
>onlyNullablePlease2 : Symbol(onlyNullablePlease2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 16, 8))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 31, 5))
}
function f2<T>(t1: { x: T; y: T }, t2: T extends T ? { x: T; y: T } : never) {
>f2 : Symbol(f2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 34, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
>t1 : Symbol(t1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 15))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 20))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 26))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
>t2 : Symbol(t2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 34))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 54))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 60))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 12))
t1 = t2; // OK
>t1 : Symbol(t1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 15))
>t2 : Symbol(t2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 34))
t2 = t1; // should fail
>t2 : Symbol(t2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 34))
>t1 : Symbol(t1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 36, 15))
}
type Foo<T> = T extends true ? string : "a";
>Foo : Symbol(Foo, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 39, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 41, 9))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 41, 9))
function test<T>(x: Foo<T>, s: string) {
>test : Symbol(test, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 41, 44))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 14))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 17))
>Foo : Symbol(Foo, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 39, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 14))
>s : Symbol(s, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 27))
x = "a"; // Currently an error, should be ok
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 17))
x = s; // Error
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 17))
>s : Symbol(s, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 43, 27))
}
// #26933
type Distributive<T> = T extends { a: number } ? { a: number } : { b: number };
>Distributive : Symbol(Distributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 46, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 49, 18))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 49, 18))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 49, 34))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 49, 50))
>b : Symbol(b, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 49, 66))
function testAssignabilityToConditionalType<T>() {
>testAssignabilityToConditionalType : Symbol(testAssignabilityToConditionalType, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 49, 79))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
const o = { a: 1, b: 2 };
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 13))
>b : Symbol(b, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 19))
const x: [T] extends [string]
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 52, 7))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
? { y: number }
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 53, 7))
: { a: number; b: number } = undefined!;
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 54, 7))
>b : Symbol(b, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 54, 18))
>undefined : Symbol(undefined)
// Simple case: OK
const o1: [T] extends [number] ? { a: number } : { b: number } = o;
>o1 : Symbol(o1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 56, 7))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 56, 36))
>b : Symbol(b, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 56, 52))
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
// Simple case where source happens to be a conditional type: also OK
const x1: [T] extends [number]
>x1 : Symbol(x1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 58, 7))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
? ([T] extends [string] ? { y: number } : { a: number })
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 59, 31))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 59, 47))
: ([T] extends [string] ? { y: number } : { b: number }) = x;
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>y : Symbol(y, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 60, 31))
>b : Symbol(b, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 60, 47))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 52, 7))
// Infer type parameters: no good
const o2: [T] extends [[infer U]] ? U : { b: number } = o;
>o2 : Symbol(o2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 62, 7))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>U : Symbol(U, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 62, 31))
>U : Symbol(U, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 62, 31))
>b : Symbol(b, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 62, 43))
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
// The next 4 are arguable - if you choose to ignore the `never` distribution case,
// then they're all good. The `never` case _is_ a bit of an outlier - we say distributive types
// look approximately like the sum of their branches, but the `never` case bucks that.
// There's an argument for the result of dumping `never` into a distributive conditional
// being not `never`, but instead the intersection of the branches - a much more precise bound
// on that "impossible" input.
// Distributive where T might instantiate to never: no good
const o3: Distributive<T> = o;
>o3 : Symbol(o3, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 72, 7))
>Distributive : Symbol(Distributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 46, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
// Distributive where T & string might instantiate to never: also no good
const o4: Distributive<T & string> = o;
>o4 : Symbol(o4, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 74, 7))
>Distributive : Symbol(Distributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 46, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
// Distributive where {a: T} cannot instantiate to never: OK
const o5: Distributive<{ a: T }> = o;
>o5 : Symbol(o5, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 76, 7))
>Distributive : Symbol(Distributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 46, 1))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 76, 26))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
// Distributive where check type is a conditional which returns a non-never type upon instantiation with `never` but can still return never otherwise: no good
const o6: Distributive<[T] extends [never] ? { a: number } : never> = o;
>o6 : Symbol(o6, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 78, 7))
>Distributive : Symbol(Distributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 46, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 50, 44))
>a : Symbol(a, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 78, 48))
>o : Symbol(o, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 51, 7))
}
type Wrapped<T> = { ___secret: T };
>Wrapped : Symbol(Wrapped, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 79, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 81, 13))
>___secret : Symbol(___secret, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 81, 19))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 81, 13))
type Unwrap<T> = T extends Wrapped<infer U> ? U : T;
>Unwrap : Symbol(Unwrap, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 81, 35))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 12))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 12))
>Wrapped : Symbol(Wrapped, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 79, 1))
>U : Symbol(U, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 40))
>U : Symbol(U, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 40))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 12))
declare function set<T, K extends keyof T>(
>set : Symbol(set, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 52))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 21))
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 23))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 21))
obj: T,
>obj : Symbol(obj, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 43))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 21))
key: K,
>key : Symbol(key, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 85, 9))
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 23))
value: Unwrap<T[K]>
>value : Symbol(value, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 86, 9))
>Unwrap : Symbol(Unwrap, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 81, 35))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 21))
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 23))
): Unwrap<T[K]>;
>Unwrap : Symbol(Unwrap, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 81, 35))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 21))
>K : Symbol(K, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 84, 23))
class Foo2 {
>Foo2 : Symbol(Foo2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 88, 16))
prop!: Wrapped<string>;
>prop : Symbol(Foo2.prop, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 90, 12))
>Wrapped : Symbol(Wrapped, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 79, 1))
method() {
>method : Symbol(Foo2.method, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 91, 25))
set(this, "prop", "hi"); // <-- type error
>set : Symbol(set, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 52))
>this : Symbol(Foo2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 88, 16))
}
}
set(new Foo2(), "prop", "hi"); // <-- typechecks
>set : Symbol(set, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 82, 52))
>Foo2 : Symbol(Foo2, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 88, 16))
type InferBecauseWhyNot<T> = [T] extends [(p: infer P1) => any]
>InferBecauseWhyNot : Symbol(InferBecauseWhyNot, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 98, 30))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 100, 24))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 100, 24))
>p : Symbol(p, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 100, 43))
>P1 : Symbol(P1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 100, 51))
? P1 | T
>P1 : Symbol(P1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 100, 51))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 100, 24))
: never;
function f3<Q extends (arg: any) => any>(x: Q): InferBecauseWhyNot<Q> {
>f3 : Symbol(f3, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 102, 10))
>Q : Symbol(Q, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 104, 12))
>arg : Symbol(arg, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 104, 23))
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 104, 41))
>Q : Symbol(Q, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 104, 12))
>InferBecauseWhyNot : Symbol(InferBecauseWhyNot, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 98, 30))
>Q : Symbol(Q, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 104, 12))
return x;
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 104, 41))
}
type InferBecauseWhyNotDistributive<T> = T extends (p: infer P1) => any
>InferBecauseWhyNotDistributive : Symbol(InferBecauseWhyNotDistributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 106, 1))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 108, 36))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 108, 36))
>p : Symbol(p, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 108, 52))
>P1 : Symbol(P1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 108, 60))
? P1 | T
>P1 : Symbol(P1, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 108, 60))
>T : Symbol(T, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 108, 36))
: never;
function f4<Q extends (arg: any) => any>(
>f4 : Symbol(f4, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 110, 10))
>Q : Symbol(Q, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 112, 12))
>arg : Symbol(arg, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 112, 23))
x: Q
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 112, 41))
>Q : Symbol(Q, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 112, 12))
): InferBecauseWhyNotDistributive<Q> {
>InferBecauseWhyNotDistributive : Symbol(InferBecauseWhyNotDistributive, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 106, 1))
>Q : Symbol(Q, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 112, 12))
return x; // should fail
>x : Symbol(x, Decl(conditionalTypeAssignabilityWhenDeferred.ts, 112, 41))
}
|
