@robinbobin/mimetype-constants/js/src/createTypeGroup.js

Extensible MIME constants with typescript support

import { objectify } from 'radashi';
export function createTypeGroup(type, subtypeGroup) {
    const resultingSubtypeGroup = objectify(Object.entries(subtypeGroup), ([key]) => key, ([, value]) => `${type}/${value}`);
    const typeGroup = {
        [type]: resultingSubtypeGroup
    };
    return typeGroup;
}