export function range(start, end){ if (arguments.length === 1) return _end => range(start, _end) if (Number.isNaN(Number(start)) || Number.isNaN(Number(end))){ throw new TypeError('Both arguments to range must be numbers') } if (end < start) return [] const len = end - start const willReturn = Array(len) for (let i = 0; i < len; i++){ willReturn[ i ] = start + i } return willReturn }