Make range object by creating has method in the object's proxy in javascript

RangeHas.js

let range = {
    start: 0,
    finish: 10
}

range = new Proxy(range, {
    has(target, property) {
        if (property >= range.start && range.finish >= property) return true;
        else return false;
    }
})

export {range};

// Example of usage
// console.log(5 in range); // true
// console.log(20 in range); // false