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tests/cases/compiler/uniqueSymbolAllowsIndexInObjectWithIndexSignature.ts(10,13): error TS2418: Type of computed property's value is '"str"', which is not assignable to type '"sym"'.
==== tests/cases/compiler/uniqueSymbolAllowsIndexInObjectWithIndexSignature.ts (1 errors) ====
// https://github.com/Microsoft/TypeScript/issues/21962
export const SYM = Symbol('a unique symbol');
export interface I {
[SYM]: 'sym';
[x: string]: 'str';
}
let a: I = {[SYM]: 'sym'}; // Expect ok
let b: I = {[SYM]: 'str'}; // Expect error
~~~~~
!!! error TS2418: Type of computed property's value is '"str"', which is not assignable to type '"sym"'.
!!! related TS6500 tests/cases/compiler/uniqueSymbolAllowsIndexInObjectWithIndexSignature.ts:5:3: The expected type comes from property 'unique symbol' which is declared here on type 'I'
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