20 lines
874 B
Plaintext
20 lines
874 B
Plaintext
==== tests/cases/compiler/interfaceImplementation7.ts (2 errors) ====
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interface i1{ name(): { s: string; }; }
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interface i2{ name(): { n: number; }; }
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interface i3 extends i1, i2 { }
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~~
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!!! Interface 'i3' cannot simultaneously extend types 'i1' and 'i2':
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!!! Named properties 'name' of types 'i1' and 'i2' are not identical.
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interface i4 extends i1, i2 { name(): { s: string; n: number; }; }
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class C1 implements i4 {
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~~
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!!! Class 'C1' incorrectly implements interface 'i4':
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!!! Types of property 'name' are incompatible:
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!!! Type '() => string' is not assignable to type '() => { s: string; n: number; }':
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!!! Type 'string' is not assignable to type '{ s: string; n: number; }':
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!!! Property 's' is missing in type 'String'.
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public name(): string { return ""; }
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}
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