TypeScript/tests/cases/conformance/expressions/functionCalls/typeArgumentInferenceErrors.ts
2014-07-12 17:30:19 -07:00

15 lines
1,004 B
TypeScript

// Generic call with multiple type parameters and only one used in parameter type annotation
function someGenerics1<T, U>(n: T, m: number) { }
someGenerics1<string, number>(3, 4); // Error
// 2 parameter generic call with argument 1 of type parameter type and argument 2 of function type whose parameter is of type parameter type
function someGenerics4<T, U>(n: T, f: (x: U) => void) { }
someGenerics4<string, number>('', (x: string) => ''); // Error
// 2 parameter generic call with argument 2 of type parameter type and argument 1 of function type whose parameter is of type parameter type
function someGenerics5<U, T>(n: T, f: (x: U) => void) { }
someGenerics5<number, string>('', (x: string) => ''); // Error
// Generic call with multiple arguments of function types that each have parameters of the same generic type
function someGenerics6<A>(a: (a: A) => A, b: (b: A) => A, c: (c: A) => A) { }
someGenerics6<number>((n: number) => n, (n: string) => n, (n: number) => n); // Error