What is the proper way to code this complex function using Typescript?

This is an interesting function:

function extractKey(obj, key) {
    var result = {};
    Object.keys(obj).forEach(k => { result[k] = () => k; });
    return key(result)();
}

Here is a variation of the code:

  getKey<T>(obj: T, keyGetter: (o: T) => any): string {
    let result = {};
    Object.keys(obj).forEach(k => { result[k] = () => k; });
    return keyGetter(result as T)();
  }

Answer №1

While this code snippet will not throw any errors, I find it somewhat ambiguous in its purpose:

fetchPropertyValue<U>(object: U, selector: (data: U) => any): string {
    const result: { [key: string]: any } = {};
    Object.keys(object).map((key) => { result[key] = () => key; });
    return selector(result as U)();
}

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