How can we transform an object into an array using Typescript generics?

Can someone help me with this function?

export const ObjectToArray = <T>(object: T): { key: unknown; value: unknown }[] =>
  Object.entries(object).map(o => ({ key: o[0], value: o[1] }));

I'm trying to remove the any part from the result

I just can't figure out where to start. Any suggestions would be greatly appreciated.

Answer №1

One potential solution is outlined below:

type Elements<U> = {
  [K in keyof U]: { identifier: K; content: U[K] };
}[keyof U];

export const convertObjectToArray = <U>(object: U): Elements<U>[] =>
  Object.entries(object).map(item => ({ identifier: item[0] as keyof U, content: item[1] }));

The Elements generic type iterates through the keys of U, creating a record for each key which can then be used to form a union of records.
It's important to note that within the convertObjectToArray function, a type assertion is necessary due to Object.entries not retaining information about the input object's keys in order to prevent potential issues.

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