Function formatArray

src/utils/string.js:169–184

* Recursively format an n-dimensional matrix * Example output: "[[1, 2], [3, 4]]" * @param {Array} array * @param {Object | number | Function} [options] Formatting options. See * lib/utils/number:format for a *

(array, options)

 * @returns {string} str
 */
function formatArray (array, options) {
  if (Array.isArray(array)) {
    let str = '['
    const len = array.length
    for (let i = 0; i < len; i++) {
      if (i !== 0) {
        str += ', '
      }
      str += formatArray(array[i], options)
    }
    str += ']'
    return str
  } else {
    return format(array, options)
  }
}

/**
 * Check whether a value looks like a Fraction (unsafe duck-type check)