What is the best way to retrieve a function's response depending on the parameters provided?

I am trying to figure out how to determine the data types of copied array elements in my code.

let inputArray = [
    {
        test: 1,
    },
    {
        test: 2,
    },
];

function clone(array: any[]): any[] {
    return Array.from(inputArray);
}

let outputArray = clone(inputArray);
outputArray[0].

Answer №1

It is essential to utilize the following signature for clone in order for TS to deduce the type of the array being passed and subsequently determine the return value's type:

clone<T extends any[]>(array: T)

Once this is implemented, property access can be utilized accurately.

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