92 lines
3.1 KiB
Text
92 lines
3.1 KiB
Text
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==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithStringIndexer.ts (8 errors) ====
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// index signatures must be compatible in assignments
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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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class A {
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[x: string]: Base;
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}
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var a: A;
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var b: { [x: string]: Derived; }
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a = b; // ok
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b = a; // error
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~
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!!! Type 'A' is not assignable to type '{ [x: string]: Derived; }':
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!!! Index signatures are incompatible:
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!!! Type 'Base' is not assignable to type 'Derived':
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!!! Property 'bar' is missing in type 'Base'.
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var b2: { [x: string]: Derived2; }
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a = b2; // ok
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b2 = a; // error
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~~
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!!! Type 'A' is not assignable to type '{ [x: string]: Derived2; }':
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!!! Index signatures are incompatible:
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!!! Type 'Base' is not assignable to type 'Derived2':
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!!! Property 'baz' is missing in type 'Base'.
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module Generics {
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class A<T extends Base> {
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[x: string]: T;
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}
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class B extends A<Base> {
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[x: string]: Derived; // ok
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}
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var b1: { [x: string]: Derived; };
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var a1: A<Base>;
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a1 = b1; // ok
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b1 = a1; // error
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~~
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!!! Type 'A<Base>' is not assignable to type '{ [x: string]: Derived; }':
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!!! Index signatures are incompatible:
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!!! Type 'Base' is not assignable to type 'Derived':
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!!! Property 'bar' is missing in type 'Base'.
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class B2 extends A<Base> {
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[x: string]: Derived2; // ok
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}
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var b2: { [x: string]: Derived2; };
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a1 = b2; // ok
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b2 = a1; // error
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~~
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!!! Type 'A<Base>' is not assignable to type '{ [x: string]: Derived2; }':
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!!! Index signatures are incompatible:
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!!! Type 'Base' is not assignable to type 'Derived2':
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!!! Property 'baz' is missing in type 'Base'.
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function foo<T extends Base>() {
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var b3: { [x: string]: Derived; };
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var a3: A<T>;
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a3 = b3; // error
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~~
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!!! Type '{ [x: string]: Derived; }' is not assignable to type 'A<T>':
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!!! Index signatures are incompatible:
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!!! Type 'Derived' is not assignable to type 'T'.
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b3 = a3; // error
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~~
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!!! Type 'A<T>' is not assignable to type '{ [x: string]: Derived; }':
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!!! Index signatures are incompatible:
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!!! Type 'T' is not assignable to type 'Derived':
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!!! Property 'bar' is missing in type 'Base'.
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var b4: { [x: string]: Derived2; };
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a3 = b4; // error
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~~
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!!! Type '{ [x: string]: Derived2; }' is not assignable to type 'A<T>':
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!!! Index signatures are incompatible:
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!!! Type 'Derived2' is not assignable to type 'T'.
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b4 = a3; // error
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~~
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!!! Type 'A<T>' is not assignable to type '{ [x: string]: Derived2; }':
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!!! Index signatures are incompatible:
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!!! Type 'T' is not assignable to type 'Derived2':
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!!! Property 'baz' is missing in type 'Base'.
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}
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}
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