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// Checks if all the elements in `values` are included in `arr`.
// - Use `Array.prototype.every()` and `Array.prototype.includes()` to check if all elements of `values` are included in `arr`.
const includesAll = (arr, values) => values.every(v => arr.includes(v));
// includesAll([1, 2, 3, 4], [1, 4]); // true
// includesAll([1, 2, 3, 4], [1, 5]); // false
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