/**
* Copies the values of `source` to `array`.
* 将“source”的值复制到“array”
* @private
* @param {Array} source 要从中复制值的数组.
* @param {Array} [array=[]] 要将值复制到的数组.
* @returns {Array} 返回数组.
*/
function copyArray(source, array) {
let index = -1
const length = source.length
array || (array = new Array(length))
while (++index < length) {
array[index] = source[index]
}
return array
}
export default copyArray
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由 徐立 提交于a979f0f3