21 lines
770 B
Plaintext
21 lines
770 B
Plaintext
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==== tests/cases/conformance/classes/classDeclarations/classHeritageSpecification/classIsSubtypeOfBaseType.ts (1 errors) ====
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class Base<T> {
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foo: T;
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}
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class Derived extends Base<{ bar: string; }> {
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foo: {
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bar: string; baz: number; // ok
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}
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}
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class Derived2 extends Base<{ bar: string; }> {
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~~~~~~~~
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!!! Class 'Derived2' incorrectly extends base class 'Base<{ bar: string; }>':
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!!! Types of property 'foo' are incompatible:
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!!! Type '{ bar?: string; }' is not assignable to type '{ bar: string; }':
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!!! Required property 'bar' cannot be reimplemented with optional property in '{ bar?: string; }'.
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foo: {
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bar?: string; // error
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}
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}
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