client/src/app/helpers/utils/object.ts

   1 function immutableAssign <A, B> (target: A, source: B) {
   2   return Object.assign({}, target, source)
   3 }
   4
   5 function removeElementFromArray <T> (arr: T[], elem: T) {
   6   const index = arr.indexOf(elem)
   7   if (index !== -1) arr.splice(index, 1)
   8 }
   9
  10 function sortBy (obj: any[], key1: string, key2?: string) {
  11   return obj.sort((a, b) => {
  12     const elem1 = key2 ? a[key1][key2] : a[key1]
  13     const elem2 = key2 ? b[key1][key2] : b[key1]
  14
  15     if (elem1 < elem2) return -1
  16     if (elem1 === elem2) return 0
  17     return 1
  18   })
  19 }
  20
  21 function intoArray (value: any) {
  22   if (!value) return undefined
  23   if (Array.isArray(value)) return value
  24
  25   if (typeof value === 'string') return value.split(',')
  26
  27   return [ value ]
  28 }
  29
  30 function toBoolean (value: any) {
  31   if (!value) return undefined
  32
  33   if (typeof value === 'boolean') return value
  34
  35   if (value === 'true') return true
  36   if (value === 'false') return false
  37
  38   return undefined
  39 }
  40
  41 export {
  42   sortBy,
  43   immutableAssign,
  44   removeElementFromArray,
  45   intoArray,
  46   toBoolean
  47 }