35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
==== tests/cases/compiler/arrayLiteralContextualType.ts (2 errors) ====
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interface IAnimal {
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name: string;
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}
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class Giraffe {
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name = "Giraffe";
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neckLength = "3m";
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}
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class Elephant {
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name = "Elephant";
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trunkDiameter = "20cm";
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}
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function foo(animals: IAnimal[]) { }
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function bar(animals: { [n: number]: IAnimal }) { }
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foo([
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new Giraffe(),
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new Elephant()
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]); // Legal because of the contextual type IAnimal provided by the parameter
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bar([
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new Giraffe(),
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new Elephant()
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]); // Legal because of the contextual type IAnimal provided by the parameter
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var arr = [new Giraffe(), new Elephant()];
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foo(arr); // Error because of no contextual type
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~~~
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!!! Argument of type '{}[]' is not assignable to parameter of type 'IAnimal[]'.
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!!! Type '{}' is not assignable to type 'IAnimal'.
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bar(arr); // Error because of no contextual type
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~~~
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!!! Argument of type '{}[]' is not assignable to parameter of type '{ [x: number]: IAnimal; }'. |