155 lines
No EOL
6.6 KiB
Text
155 lines
No EOL
6.6 KiB
Text
==== tests/cases/conformance/expressions/functionCalls/typeArgumentInferenceConstructSignatures.ts (8 errors) ====
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// Generic call with no parameters
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interface NoParams {
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new <T>();
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}
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var noParams: NoParams;
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new noParams();
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new noParams<string>();
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new noParams<{}>();
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// Generic call with parameters but none use type parameter type
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interface noGenericParams {
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new <T>(n: string);
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}
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var noGenericParams: noGenericParams;
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new noGenericParams('');
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new noGenericParams<number>('');
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new noGenericParams<{}>('');
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// Generic call with multiple type parameters and only one used in parameter type annotation
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interface someGenerics1 {
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new <T, U>(n: T, m: number);
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}
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var someGenerics1: someGenerics1;
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new someGenerics1(3, 4);
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new someGenerics1<string, number>(3, 4); // Error
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~
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!!! Argument of type 'number' is not assignable to parameter of type 'string'.
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new someGenerics1<number, {}>(3, 4);
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// Generic call with argument of function type whose parameter is of type parameter type
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interface someGenerics2a {
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new <T>(n: (x: T) => void);
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}
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var someGenerics2a: someGenerics2a;
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new someGenerics2a((n: string) => n);
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new someGenerics2a<string>((n: string) => n);
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new someGenerics2a<string>((n) => n.substr(0));
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interface someGenerics2b {
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new <T, U>(n: (x: T, y: U) => void);
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}
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var someGenerics2b: someGenerics2b;
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new someGenerics2b((n: string, x: number) => n);
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new someGenerics2b<string, number>((n: string, t: number) => n);
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new someGenerics2b<string, number>((n, t) => n.substr(t * t));
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// Generic call with argument of function type whose parameter is not of type parameter type but body/return type uses type parameter
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interface someGenerics3 {
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new <T>(producer: () => T);
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}
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var someGenerics3: someGenerics3;
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new someGenerics3(() => '');
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new someGenerics3<Window>(() => undefined);
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~~~~~~
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!!! Cannot find name 'Window'.
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new someGenerics3<number>(() => 3);
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// 2 parameter generic call with argument 1 of type parameter type and argument 2 of function type whose parameter is of type parameter type
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interface someGenerics4 {
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new <T, U>(n: T, f: (x: U) => void);
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}
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var someGenerics4: someGenerics4;
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new someGenerics4(4, () => null);
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new someGenerics4<string, number>('', () => 3);
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new someGenerics4<string, number>('', (x: string) => ''); // Error
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~~~~~~~~~~~~~~~~~
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!!! Argument of type '(x: string) => string' is not assignable to parameter of type '(x: number) => void'.
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new someGenerics4<string, number>(null, null);
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// 2 parameter generic call with argument 2 of type parameter type and argument 1 of function type whose parameter is of type parameter type
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interface someGenerics5 {
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new <U, T>(n: T, f: (x: U) => void);
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}
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var someGenerics5: someGenerics5;
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new someGenerics5(4, () => null);
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new someGenerics5<number, string>('', () => 3);
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new someGenerics5<number, string>('', (x: string) => ''); // Error
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~~~~~~~~~~~~~~~~~
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!!! Argument of type '(x: string) => string' is not assignable to parameter of type '(x: number) => void'.
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new someGenerics5<string, number>(null, null);
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// Generic call with multiple arguments of function types that each have parameters of the same generic type
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interface someGenerics6 {
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new <A>(a: (a: A) => A, b: (b: A) => A, c: (c: A) => A);
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}
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var someGenerics6: someGenerics6;
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new someGenerics6(n => n, n => n, n => n);
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new someGenerics6<number>(n => n, n => n, n => n);
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new someGenerics6<number>((n: number) => n, (n: string) => n, (n: number) => n); // Error
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~~~~~~~~~~~~~~~~
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!!! Argument of type '(n: string) => string' is not assignable to parameter of type '(b: number) => number'.
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new someGenerics6<number>((n: number) => n, (n: number) => n, (n: number) => n);
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// Generic call with multiple arguments of function types that each have parameters of different generic type
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interface someGenerics7 {
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new <A, B, C>(a: (a: A) => A, b: (b: B) => B, c: (c: C) => C);
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}
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var someGenerics7: someGenerics7;
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new someGenerics7(n => n, n => n, n => n);
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new someGenerics7<number, string, number>(n => n, n => n, n => n);
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new someGenerics7<number, string, number>((n: number) => n, (n: string) => n, (n: number) => n);
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// Generic call with argument of generic function type
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interface someGenerics8 {
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new <T>(n: T): T;
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}
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var someGenerics8: someGenerics8;
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var x = new someGenerics8(someGenerics7);
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new x<string, string, string>(null, null, null);
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// Generic call with multiple parameters of generic type passed arguments with no best common type
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interface someGenerics9 {
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new <T>(a: T, b: T, c: T): T;
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}
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var someGenerics9: someGenerics9;
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var a9a = new someGenerics9('', 0, []);
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var a9a: {};
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var a9b = new someGenerics9<{ a?: number; b?: string; }>({ a: 0 }, { b: '' }, null);
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var a9b: { a?: number; b?: string; };
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// Generic call with multiple parameters of generic type passed arguments with multiple best common types
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interface A91 {
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x: number;
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y?: string;
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}
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interface A92 {
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x: number;
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z?: Window;
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~~~~~~
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!!! Cannot find name 'Window'.
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}
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var a9e = new someGenerics9(undefined, { x: 6, z: window }, { x: 6, y: '' });
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~~~~~~
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!!! Cannot find name 'window'.
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var a9e: {};
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var a9f = new someGenerics9<A92>(undefined, { x: 6, z: window }, { x: 6, y: '' });
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~~~~~~
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!!! Cannot find name 'window'.
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var a9f: A92;
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// Generic call with multiple parameters of generic type passed arguments with a single best common type
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var a9d = new someGenerics9({ x: 3 }, { x: 6 }, { x: 6 });
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var a9d: { x: number; };
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// Generic call with multiple parameters of generic type where one argument is of type 'any'
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var anyVar: any;
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var a = new someGenerics9(7, anyVar, 4);
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var a: any;
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// Generic call with multiple parameters of generic type where one argument is [] and the other is not 'any'
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var arr = new someGenerics9([], null, undefined);
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var arr: any[];
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