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34 lines
766 B
JavaScript

'use strict';
module.exports = arrayDepth;
function arrayDepth(arr) {
if (!Array.isArray(arr)) {
return { min: 0, max: 0, containsNonArrayItem: true };
}
if (arr.length === 0) {
return { min: 1, max: 1, containsNonArrayItem: false };
}
if (arr.length === 1 && !Array.isArray(arr[0])) {
return { min: 1, max: 1, containsNonArrayItem: false };
}
const res = arrayDepth(arr[0]);
for (let i = 1; i < arr.length; ++i) {
const _res = arrayDepth(arr[i]);
if (_res.min < res.min) {
res.min = _res.min;
}
if (_res.max > res.max) {
res.max = _res.max;
}
res.containsNonArrayItem = res.containsNonArrayItem || _res.containsNonArrayItem;
}
res.min = res.min + 1;
res.max = res.max + 1;
return res;
}