calculate the depths of nested arrays

array-depth.js

/**
 * Operations to calculate the depths of a nested array
 * @author Kyle Phillips
 * @module 'array-depth'
 */


const maxDepth = (a)=>{
  let maxVal = Number.MIN_VALUE
  let item

  a.forEach(val=>{
    let depth = max(val)
    if(depth > maxVal){
      maxVal = depth
      item = val
    }
  })

  return item
}

const minDepth = (a)=>{
  let minVal = Number.MAX_VALUE
  let item

  a.forEach(val=>{
    let depth = min(val)
    if(depth < minVal){
      minVal = depth
      item = val
    }
  })

  return item
}

/**
 * find the maximum depth of nested arrays
 * @param {Array} a
 * @param {Number}[count]
 */
export const max = (a, count=0)=>
    Array.isArray(a) ? max(maxDepth(a), count + 1) : count

/**
 * find the minimum depth of nested arrays
 * @param {Array} a
 * @param {Number} [count]
 */
export const min = (a, count=0)=>
    Array.isArray(a) ? min(minDepth(a), count + 1) : count

Thanks for this!

saved my life

This code is like a symphony. I will revisit it whenever I feel the need to be inspired.