簡易アプリ

  function isPromise(val){
     
    return val && typeof val.then ==='function'
  }

function isObeject(obj) {
     
  return obj != null && typeof obj === "object"
}

function uppercaseFirst(string) {
     
  return string.charAt(0).toUpperCase() + string.slice(1)
  }

function toThousandFilter(num) {
     
  return (+num || 0).toString().replace(/^-?\d+/g, m => m.replace(/(?=(?!\b)(\d{3})+$)/g, ','))
}

 function forEachValue (obj) {
     
    Object.keys(obj).forEach(key => {
     
      console.log(obj[key]);  //obj[key]        
    })
  }

  function forEachValue (obj, fn) {
     
  Object.keys(obj).forEach(key => fn(obj[key], key))
}

function deepCopy (obj, cache = []) {
     
  //             
  if (obj === null || typeof obj !== 'object') {
     
    return obj
  }

 //        
  const hit = find(cache, c => c.original === obj)
  if (hit) {
     
    return hit.copy
  }

 //         
  const copy = Array.isArray(obj) ? [] : {
     }
  cache.push({
     
    original: obj,
    copy
  })

  Object.keys(obj).forEach(key => {
     
    copy[key] = deepCopy(obj[key], cache)
  })

  return copy
}