Random drop chance JS

example.js

const items = [
    {
        name: 'Apple',
        dropChance: 0.7
    },
    {
        name: 'Knife',
        dropChance: 0.25
    },
    {
        name: 'Spoon',
        dropChance: 0.25
    },
    {
        name: 'Ice Cream',
        dropChance: 0.1
    }
];

const lerp = (min, max, value) => ((1 - value) * min + value * max);

const drop = items => {
    const total = items.reduce((accumulator, item) => (accumulator += item.dropChance), 0);
    const chance = lerp(0, total, Math.random());

    let current = 0;
    for (const item of items) {
        if (current <= chance && chance < current + item.dropChance) {
            return item;
        }

        current += item.dropChance;
    }
};