Higher order function / curry fn to sort objects

sortObjectBy.js

const by = (key) => {
    const sortNumbers = (a, b) => a - b;
    const sortLexico = (a, b) => a.localeCompare(b)
    return (a, b) => {
        return isNaN(a[key])
            ?
            sortLexico(a[key], b[key])
            :
            sortNumbers(a[key], b[key])
    }
}