An index signature parameter type cannot be a union type. Consider using a mapped object type instead

Question

I\'m trying to use the following pattern:

enum Option {
  ONE = \'one\',
  TWO = \'two\',
  THREE = \'three\'
}

interface OptionRequirement {
  someBool: bo         


        

Answer 1

In my case I needed the properties to be optional, so I created this generic type.

type PartialRecord = { [P in K]?: T; };

Then use it as such:

type MyTypes = 'TYPE_A' | 'TYPE_B' | 'TYPE_C';

interface IContent {
    name: string;
    age: number;
}

interface IExample {
    type: string;
    partials: PartialRecord;
}

Example

const example : IExample = {
    type: 'some-type',
    partials: {
        TYPE_A : {
            name: 'name',
            age: 30
        },
        TYPE_C : {
            name: 'another name',
            age: 50
        }
    }
}