99 lines
3.7 KiB
Plaintext
99 lines
3.7 KiB
Plaintext
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithCallSignatures2.ts (12 errors) ====
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// void returning call signatures can be assigned a non-void returning call signature that otherwise matches
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interface T {
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f(x: number): void;
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}
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var t: T;
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var a: { f(x: number): void };
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t = a;
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a = t;
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interface S {
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f(x: number): string;
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}
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var s: S;
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var a2: { f(x: number): string };
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t = s;
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t = a2;
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a = s;
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a = a2;
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t = { f: () => 1 };
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t = { f: <T>(x:T) => 1 };
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t = { f: function f() { return 1 } };
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t = { f(x: number) { return ''; } }
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a = { f: () => 1 }
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a = { f: <T>(x: T) => 1 };
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a = { f: function (x: number) { return ''; } }
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// errors
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t = () => 1;
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~
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!!! Type '() => number' is not assignable to type 'T':
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!!! Property 'f' is missing in type '() => number'.
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t = function (x: number) { return ''; }
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~
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!!! Type '(x: number) => string' is not assignable to type 'T':
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!!! Property 'f' is missing in type '(x: number) => string'.
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a = () => 1;
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~
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!!! Type '() => number' is not assignable to type '{ f(x: number): void; }':
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!!! Property 'f' is missing in type '() => number'.
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a = function (x: number) { return ''; }
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~
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!!! Type '(x: number) => string' is not assignable to type '{ f(x: number): void; }':
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!!! Property 'f' is missing in type '(x: number) => string'.
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interface S2 {
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f(x: string): void;
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}
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var s2: S2;
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var a3: { f(x: string): void };
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// these are errors
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t = s2;
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~
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!!! Type 'S2' is not assignable to type 'T':
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!!! Types of property 'f' are incompatible:
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!!! Type '(x: string) => void' is not assignable to type '(x: number) => void':
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!!! Types of parameters 'x' and 'x' are incompatible:
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!!! Type 'string' is not assignable to type 'number'.
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t = a3;
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~
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!!! Type '{ f(x: string): void; }' is not assignable to type 'T':
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!!! Types of property 'f' are incompatible:
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!!! Type '(x: string) => void' is not assignable to type '(x: number) => void':
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!!! Types of parameters 'x' and 'x' are incompatible:
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!!! Type 'string' is not assignable to type 'number'.
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t = (x: string) => 1;
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~
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!!! Type '(x: string) => number' is not assignable to type 'T':
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!!! Property 'f' is missing in type '(x: string) => number'.
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t = function (x: string) { return ''; }
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~
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!!! Type '(x: string) => string' is not assignable to type 'T':
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!!! Property 'f' is missing in type '(x: string) => string'.
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a = s2;
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~
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!!! Type 'S2' is not assignable to type '{ f(x: number): void; }':
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!!! Types of property 'f' are incompatible:
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!!! Type '(x: string) => void' is not assignable to type '(x: number) => void':
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!!! Types of parameters 'x' and 'x' are incompatible:
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!!! Type 'string' is not assignable to type 'number'.
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a = a3;
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~
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!!! Type '{ f(x: string): void; }' is not assignable to type '{ f(x: number): void; }':
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!!! Types of property 'f' are incompatible:
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!!! Type '(x: string) => void' is not assignable to type '(x: number) => void':
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!!! Types of parameters 'x' and 'x' are incompatible:
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!!! Type 'string' is not assignable to type 'number'.
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a = (x: string) => 1;
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~
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!!! Type '(x: string) => number' is not assignable to type '{ f(x: number): void; }':
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!!! Property 'f' is missing in type '(x: string) => number'.
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a = function (x: string) { return ''; }
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~
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!!! Type '(x: string) => string' is not assignable to type '{ f(x: number): void; }':
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!!! Property 'f' is missing in type '(x: string) => string'.
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