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tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(6,16): error TS1099: Type argument list cannot be empty.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(9,17): error TS2635: Type '{ <T>(x: T): T; <T>(x: T, n: number): T; <T, U>(t: [T, U]): [T, U]; }' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(12,21): error TS1099: Type argument list cannot be empty.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(15,22): error TS2635: Type '{ <T>(x: T): T; <T>(x: T, n: number): T; <T, U>(t: [T, U]): [T, U]; }' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(18,21): error TS1099: Type argument list cannot be empty.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(20,22): error TS2635: Type 'ArrayConstructor' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(23,24): error TS1099: Type argument list cannot be empty.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(25,25): error TS2635: Type 'ArrayConstructor' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(50,16): error TS2635: Type '{ x: string; y: string; }' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(82,16): error TS2635: Type '{ x: string; } & { y: string; }' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(106,16): error TS2635: Type '(a: string, b: number) => string[]' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(114,16): error TS2635: Type '{ x: string; } | { y: string; }' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(126,16): error TS2635: Type '(a: string, b: number) => string[]' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(130,16): error TS2635: Type 'new (a: string, b: number) => string[]' has no signatures for which the type argument list is applicable.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(163,40): error TS2344: Type 'U' does not satisfy the constraint 'number'.
Type 'string' is not assignable to type 'number'.
tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts(164,40): error TS2344: Type 'U' does not satisfy the constraint 'string'.
Type 'number' is not assignable to type 'string'.
==== tests/cases/conformance/types/typeParameters/typeArgumentLists/instantiationExpressions.ts (16 errors) ====
declare function fx<T>(x: T): T;
declare function fx<T>(x: T, n: number): T;
declare function fx<T, U>(t: [T, U]): [T, U];
function f1() {
let f0 = fx<>; // Error
~~
!!! error TS1099: Type argument list cannot be empty.
let f1 = fx<string>; // { (x: string): string; (x: string, n: number): string; }
let f2 = fx<string, number>; // (t: [string, number]) => [string, number]
let f3 = fx<string, number, boolean>; // Error
~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2635: Type '{ <T>(x: T): T; <T>(x: T, n: number): T; <T, U>(t: [T, U]): [T, U]; }' has no signatures for which the type argument list is applicable.
}
type T10 = typeof fx<>; // Error
~~
!!! error TS1099: Type argument list cannot be empty.
type T11 = typeof fx<string>; // { (x: string): string; (x: string, n: number): string; }
type T12 = typeof fx<string, number>; // (t: [string, number]) => [string, number]
type T13 = typeof fx<string, number, boolean>; // Error
~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2635: Type '{ <T>(x: T): T; <T>(x: T, n: number): T; <T, U>(t: [T, U]): [T, U]; }' has no signatures for which the type argument list is applicable.
function f2() {
const A0 = Array<>; // Error
~~
!!! error TS1099: Type argument list cannot be empty.
const A1 = Array<string>; // new (...) => string[]
const A2 = Array<string, number>; // Error
~~~~~~~~~~~~~~
!!! error TS2635: Type 'ArrayConstructor' has no signatures for which the type argument list is applicable.
}
type T20 = typeof Array<>; // Error
~~
!!! error TS1099: Type argument list cannot be empty.
type T21 = typeof Array<string>; // new (...) => string[]
type T22 = typeof Array<string, number>; // Error
~~~~~~~~~~~~~~
!!! error TS2635: Type 'ArrayConstructor' has no signatures for which the type argument list is applicable.
declare class C<T> {
constructor(x: T);
static f<U>(x: U): U[];
}
function f3() {
let c1 = C<string>; // { new (x: string): C<string>; f<U>(x: U): T[]; prototype: C<any>; }
let f1 = C.f<string>; // (x: string) => string[]
}
function f10(f: { <T>(a: T): T, <U>(a: U, b: number): U[] }) {
let fs = f<string>; // { (a: string): string; (a: string, b: number): string[]; }
}
function f11(f: { <T>(a: T): T, (a: string, b: number): string[] }) {
let fs = f<string>; // (a: string) => string
}
function f12(f: { <T>(a: T): T, x: string }) {
let fs = f<string>; // { (a: string): string; x: string; }
}
function f13(f: { x: string, y: string }) {
let fs = f<string>; // Error, no applicable signatures
~~~~~~
!!! error TS2635: Type '{ x: string; y: string; }' has no signatures for which the type argument list is applicable.
}
function f14(f: { new <T>(a: T): T, new <U>(a: U, b: number): U[] }) {
let fs = f<string>; // { new (a: string): string; new (a: string, b: number): string[]; }
}
function f15(f: { new <T>(a: T): T, <U>(a: U, b: number): U[] }) {
let fs = f<string>; // { new (a: string): string; (a: string, b: number): string[]; }
}
function f16(f: { new <T>(a: T): T, (a: string, b: number): string[] }) {
let fs = f<string>; // new (a: string) => string
}
function f17(f: { <T>(a: T): T, new (a: string, b: number): string[] }) {
let fs = f<string>; // (a: string) => string
}
function f20(f: (<T>(a: T) => T) & (<U>(a: U, b: number) => U[])) {
let fs = f<string>; // ((a: string) => string) & ((a: string, b: number) => string[]])
}
function f21(f: (<T>(a: T) => T) & ((a: string, b: number) => string[])) {
let fs = f<string>; // (a: string) => string
}
function f22(f: (<T>(a: T) => T) & { x: string }) {
let fs = f<string>; // ((a: string) => string) & { x: string }
}
function f23(f: { x: string } & { y: string }) {
let fs = f<string>; // Error, no applicable signatures
~~~~~~
!!! error TS2635: Type '{ x: string; } & { y: string; }' has no signatures for which the type argument list is applicable.
}
function f24(f: (new <T>(a: T) => T) & (new <U>(a: U, b: number) => U[])) {
let fs = f<string>; // (new (a: string) => string) & ((a: string, b: number) => string[]])
}
function f25(f: (new <T>(a: T) => T) & (<U>(a: U, b: number) => U[])) {
let fs = f<string>; // (new (a: string) => string) & ((a: string, b: number) => string[]])
}
function f26(f: (new <T>(a: T) => T) & ((a: string, b: number) => string[])) {
let fs = f<string>; // new (a: string) => string
}
function f27(f: (<T>(a: T) => T) & (new (a: string, b: number) => string[])) {
let fs = f<string>; // (a: string) => string
}
function f30(f: (<T>(a: T) => T) | (<U>(a: U, b: number) => U[])) {
let fs = f<string>; // ((a: string) => string) | ((a: string, b: number) => string[]])
}
function f31(f: (<T>(a: T) => T) | ((a: string, b: number) => string[])) {
let fs = f<string>; // Error, '(a: string, b: number) => string[]' has no applicable signatures
~~~~~~
!!! error TS2635: Type '(a: string, b: number) => string[]' has no signatures for which the type argument list is applicable.
}
function f32(f: (<T>(a: T) => T) | { x: string }) {
let fs = f<string>; // ((a: string) => string) | { x: string }
}
function f33(f: { x: string } | { y: string }) {
let fs = f<string>; // Error, no applicable signatures
~~~~~~
!!! error TS2635: Type '{ x: string; } | { y: string; }' has no signatures for which the type argument list is applicable.
}
function f34(f: (new <T>(a: T) => T) | (new <U>(a: U, b: number) => U[])) {
let fs = f<string>; // (new (a: string) => string) | ((a: string, b: number) => string[]])
}
function f35(f: (new <T>(a: T) => T) | (<U>(a: U, b: number) => U[])) {
let fs = f<string>; // (new (a: string) => string) | ((a: string, b: number) => string[]])
}
function f36(f: (new <T>(a: T) => T) | ((a: string, b: number) => string[])) {
let fs = f<string>; // Error, '(a: string, b: number) => string[]' has no applicable signatures
~~~~~~
!!! error TS2635: Type '(a: string, b: number) => string[]' has no signatures for which the type argument list is applicable.
}
function f37(f: (<T>(a: T) => T) | (new (a: string, b: number) => string[])) {
let fs = f<string>; // Error, 'new (a: string, b: number) => string[]' has no applicable signatures
~~~~~~
!!! error TS2635: Type 'new (a: string, b: number) => string[]' has no signatures for which the type argument list is applicable.
}
function f38<T extends (<A>(x: A) => A) | (<B>(x: B) => B[]), U>(f: T | U | (<C>(x: C) => C[][])) {
let fs = f<string>; // U | ((x: string) => string) | ((x: string) => string[]) | ((x: string) => string[][])
}
function makeBox<T>(value: T) {
return { value };
}
type BoxFunc<T> = typeof makeBox<T>; // (value: T) => { value: T }
type StringBoxFunc = BoxFunc<string>; // (value: string) => { value: string }
type Box<T> = ReturnType<typeof makeBox<T>>; // { value: T }
type StringBox = Box<string>; // { value: string }
type A<U> = InstanceType<typeof Array<U>>; // U[]
declare const g1: {
<T>(a: T): { a: T };
new <U>(b: U): { b: U };
}
type T30<V> = typeof g1<V>; // { (a: V) => { a: V }; new (b: V) => { b: V }; }
type T31<A> = ReturnType<T30<A>>; // { a: A }
type T32<B> = InstanceType<T30<B>>; // { b: B }
declare const g2: {
<T extends string>(a: T): T;
new <T extends number>(b: T): T;
}
type T40<U extends string> = typeof g2<U>; // Error
~
!!! error TS2344: Type 'U' does not satisfy the constraint 'number'.
!!! error TS2344: Type 'string' is not assignable to type 'number'.
type T41<U extends number> = typeof g2<U>; // Error
~
!!! error TS2344: Type 'U' does not satisfy the constraint 'string'.
!!! error TS2344: Type 'number' is not assignable to type 'string'.
declare const g3: {
<T extends string>(a: T): T;
new <T extends number, Q>(b: T): T;
}
type T50<U extends string> = typeof g3<U>; // (a: U) => U
type T51<U extends number> = typeof g3<U, any>; // (b: U) => U
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