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/** * This computes the minimum & maximum number in an array. * * This runs in `O(n)`, linear time, with respect to the length of the array. * * @param {Array<number>} x sample of one or more data points * @returns {Array<number>} minimum & maximum value * @throws {Error} if the length of x is less than one * @example * extent([1, 2, 3, 4]); * // => [1, 4] */function extent(x) {    if (x.length === 0) {        throw new Error("extent requires at least one data point");    }
    let min = x[0];    let max = x[0];    for (let i = 1; i < x.length; i++) {        if (x[i] > max) {            max = x[i];        }        if (x[i] < min) {            min = x[i];        }    }    return [min, max];}
export default extent;