TypeScript A computed property name in a type literal must directly refer to a built-in symbol

Question

ERROR in ...component.ts (..,..): A computed property name in a type literal must directly refer to a built- in symbol. ...: Cannot find name 'any'.

I'm looking forward an object which contains strings which have other string, i.e:

{ abc: 'xyz' } 

What I did:

foo: { [string]: string }; 

Answer 1

An identifying name on the computed value is required:

foo: { [bar: string]: string };