Function _flattenRectangular

src/utils/array.js:500–510

(array)

  }

  function _flattenRectangular (array) {
    if (Array.isArray(array[0])) {
      for (let i = 0; i < array.length; i++) {
        _flattenRectangular(array[i])
      }
    } else {
      for (let i = 0; i < array.length; i++) {
        flat.push(array[i])
      }
    }
  }
}

/**