0e905be42b
* Switch index signature storage to 'indexInfos: IndexInfo[]' property * Accept new baselines * Remove another usage of IndexKind enum * Update getIndexedAccessType and resolveMappedTypeMembers * Accept new baselines * Update grammar checking for index signatures * Accept new baselines * Consider all index signatures in mapped types and union types * Accept new baselines * Update getIndexType * Accept new baselines * Intersect multiple applicable index signatures * Use getApplicableIndexInfo instead of hardwired string/number handling * Update index signature relationship checking * Report type for which index signature is missing * Report type for which index signature is missing * Accept new baselines * Make 'number' index signatures consistently apply to numeric strings * Accept new baselines * Update fourslash test * Revise index constraint checking * Accept new baselines * Update error messages * Accept new baselines * Update type inference from index signatures * Update isKnownProperty * Update contextual typing based on index signatures * Accept new baselines * Support union types in index signature declarations * Accept new baselines * Check duplicate index signatures / remove redundant template literals from unions with string * Accept new baselines * Include key type in diagnostic / check symbol-named properties * Accept new baselines * Minor fix * Add tests * Accept new baselines * Add optimized findApplicableIndexInfoForName * Accept new baselines * Another place we don't need to obtain literal type for property name * Accept new baselines * Don't create literal types that are going to be discarded * Individual maps for string, number, bigint, and enum literal types * Remove ineffective optimizations * Accept new baselines * Permit intersections as key types in index signatures * Index expression in element access is template literal context * Add tests * Accept new baselines * Symbol index signatures from object literals with computed symbol properties * Accept new baselines * Add more tests * Accept new baselines * Implement Go To Definition for all applicable index signatures * Add fourslash test * Accept new API baselines
68 lines
3.3 KiB
Plaintext
68 lines
3.3 KiB
Plaintext
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer3.ts(14,1): error TS2322: Type '{ [x: number]: Base; }' is not assignable to type 'A'.
|
|
'number' index signatures are incompatible.
|
|
Property 'bar' is missing in type 'Base' but required in type 'Derived'.
|
|
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer3.ts(23,1): error TS2322: Type 'A' is not assignable to type '{ [x: number]: Derived2; }'.
|
|
'number' index signatures are incompatible.
|
|
Property 'baz' is missing in type 'Derived' but required in type 'Derived2'.
|
|
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer3.ts(33,9): error TS2322: Type '{ [x: number]: Derived; }' is not assignable to type 'A<T>'.
|
|
'number' index signatures are incompatible.
|
|
Type 'Derived' is not assignable to type 'T'.
|
|
'Derived' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Derived'.
|
|
|
|
|
|
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer3.ts (3 errors) ====
|
|
// Derived type indexer must be subtype of base type indexer
|
|
|
|
interface Base { foo: string; }
|
|
interface Derived extends Base { bar: string; }
|
|
interface Derived2 extends Derived { baz: string; }
|
|
|
|
class A {
|
|
[x: number]: Derived;
|
|
}
|
|
|
|
var a: A;
|
|
var b: { [x: number]: Base; };
|
|
|
|
a = b; // error
|
|
~
|
|
!!! error TS2322: Type '{ [x: number]: Base; }' is not assignable to type 'A'.
|
|
!!! error TS2322: 'number' index signatures are incompatible.
|
|
!!! error TS2322: Property 'bar' is missing in type 'Base' but required in type 'Derived'.
|
|
!!! related TS2728 tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer3.ts:4:34: 'bar' is declared here.
|
|
b = a; // ok
|
|
|
|
class B2 extends A {
|
|
[x: number]: Derived2; // ok
|
|
}
|
|
|
|
var b2: { [x: number]: Derived2; };
|
|
a = b2; // ok
|
|
b2 = a; // error
|
|
~~
|
|
!!! error TS2322: Type 'A' is not assignable to type '{ [x: number]: Derived2; }'.
|
|
!!! error TS2322: 'number' index signatures are incompatible.
|
|
!!! error TS2322: Property 'baz' is missing in type 'Derived' but required in type 'Derived2'.
|
|
!!! related TS2728 tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer3.ts:5:38: 'baz' is declared here.
|
|
|
|
module Generics {
|
|
class A<T extends Derived> {
|
|
[x: number]: T;
|
|
}
|
|
|
|
function foo<T extends Derived>() {
|
|
var a: A<T>;
|
|
var b: { [x: number]: Derived; };
|
|
a = b; // error
|
|
~
|
|
!!! error TS2322: Type '{ [x: number]: Derived; }' is not assignable to type 'A<T>'.
|
|
!!! error TS2322: 'number' index signatures are incompatible.
|
|
!!! error TS2322: Type 'Derived' is not assignable to type 'T'.
|
|
!!! error TS2322: 'Derived' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Derived'.
|
|
b = a; // ok
|
|
|
|
var b2: { [x: number]: T; };
|
|
a = b2; // ok
|
|
b2 = a; // ok
|
|
}
|
|
} |