Can you help me with this code snippet?
const fn = (name: string) => {
return { [name]: "some txt" };
};
const res = fn("books"); // books or any other string
The type of res recognized by TS is:
const res: {
[x: string]: string;
}
I want to specify that res should have a property called books
const res: {
books: string;
}
I've tried different approaches but nothing seems to be working. Is it even possible to achieve this? Or is it a known limitation in TypeScript?
To solve this issue, you can create a generic function in the following way:
const generateValue = <T extends string>(property: T): { [key in T]: string } => {
return { [property]: "some text" } as any;
};
const result = generateValue("items");
This workaround is necessary due to TypeScript's limitation on allowing such syntax. You can test it out yourself here.
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