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fromEntries

fromEntries() function​

Returns an object from string keyed-value pairs.

Signature: 
declare function fromEntries<U extends [Key, any] | readonly [Key, any], T extends Iterable<U> | AsyncIterable<U>>(iterable: T): ReturnValueType<T, {
    [K in IterableInfer<T> as K[0]]: K[1];
}>;

Example​

const arr = [
    ["a", 1],
    ["b", true],
    ["c", "hello"],
    ["d", { d1: 1, d2: 3 }],
] as (
    | ["a", number]
    | ["b", boolean]
    | ["c", string]
    | ["d", { d1: number, d2: number; }]
)[];
fromEntries(arr); // { a: 1, b: true, c: 'hello', d: { d1: 1, d2: 3 } }

see entries

Open Source Code