/**
* Creates an array of values by running each element of `array` thru `iteratee`.
* The iteratee is invoked with three arguments: (value, index, array).
*
* @since 5.0.0
* @category Array
* @param {Array} array The array to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Array} Returns the new mapped array.
* @example
*
* function square(n) {
* return n * n
* }
*
* map([4, 8], square)
* // => [16, 64]
*/
function map(array, iteratee) {
let index = -1
const length = array == null ? 0 : array.length
const result = new Array(length)
while (++index < length) {
result[index] = iteratee(array[index], index, array)
}
return result
}
export default map
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由 徐立 提交于a979f0f3