15 lines
389 B
TypeScript
15 lines
389 B
TypeScript
interface IFoo<T> {
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foo<T>(x: T): T; // no error on implementors because IFoo's T is different from foo's T
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}
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class IntFooBad implements IFoo<number> {
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foo(x: string): string { return null; }
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}
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class StringFoo2 implements IFoo<string> {
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foo(x: string): string { return null; }
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}
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class StringFoo3 implements IFoo<string> {
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foo<T>(x: T): T { return null; }
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} |