Invert

Swap the key-value pairs of an object.

🎬 Usage

<script>
    import {invert} from "@sveu/shared/dicts"

    const obj = {"Mila": "Kunis", "Emma": "Watson", "Scarlett": "Johansson"}

    invert(obj) // { Kunis: 'Mila', Watson: 'Emma', Johansson: 'Scarlett' }
</script>

👩‍💻API

👻 Arguments

Name	Description	Type	Required
obj	object to invert	`Record<string \| number \| symbol, any>`	`yes`

↩️ Returns

A new object with inverted key-value pairs.

🧪 Playground

Source Code 👀

Source Code

export function invert<
    Key extends string | number | symbol,
    Value extends string | number | symbol
>(obj: Record<string, Value>): Record<Value, Key> {
    if (!obj) return {} as Record<Value, Key>
    return Object.keys(obj).reduce(
        (acc, key) => ({
            ...acc,
            [obj[key]]: key,
        }),
        {} as Record<Value, Key>
    )
}

Last update: 2023-02-14

Authors: Mohamed-Kaizen