'Return type based on the enum parameter

I have a function e.g.

type DataType = 'json' | 'txt';
interface MyType {}

const getItem = <T extends string | MyType>(type: DateaType): T => axios.get<T>('...');

const r1: MyType = getItem('json');
const r2: string = getItem('txt');

Is there an option to apply conditional types to make the return type as strict as it is shown in the example?

typescript conditional-types

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Solution	Source

'Return type based on the enum parameter

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