34 lines
1.1 KiB
Text
34 lines
1.1 KiB
Text
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==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithStringIndexer3.ts (3 errors) ====
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// Derived type indexer must be subtype of base type indexer
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interface Base { foo: string; }
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interface Derived extends Base { bar: string; }
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interface Derived2 extends Derived { baz: string; }
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var a: A;
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~
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!!! Cannot find name 'A'.
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var b1: { [x: string]: string; }
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a = b1; // error
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b1 = a; // error
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module Generics {
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class A<T extends Derived> {
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[x: string]: T;
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}
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function foo<T extends Derived>() {
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var a: A<T>;
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var b: { [x: string]: string; }
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a = b; // error
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~
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!!! Type '{ [x: string]: string; }' is not assignable to type 'A<T>':
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!!! Index signatures are incompatible:
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!!! Type 'string' is not assignable to type 'T'.
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b = a; // error
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~
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!!! Type 'A<T>' is not assignable to type '{ [x: string]: string; }':
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!!! Index signatures are incompatible:
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!!! Type 'T' is not assignable to type 'string'.
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}
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}
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