Array Tools

Additems.js

/*
  combine 2 arrays 
*/

const addMoreItemsInArray = (array = [], newItems = []) => [...array, ...newItems];

cluster_getItem.js

/*
  From a Array of objects 
   const array = [
    { id: 'd5fe012d-c344-49cd-a4f4-b3c56a7f04c8', name: 'lalalala' },
    { id: '3c66c9ce-7b92-45ba-8684-cce8f18da1bd', name: 'lolololo' },
    { name: 'lelelele' },
  ];
  getItemById(array, 'd5fe012d-c344-49cd-a4f4-b3c56a7f04c8')
  return //  { id: 'd5fe012d-c344-49cd-a4f4-b3c56a7f04c8', name: 'lalalala' }
*/
const getItemBy = (param) => (array, value) => array.find((elment) => elment[param] === value);
export const getItemById = getItemBy('id');

NoRepeat.js

/*
  with array of objects, return a array with non repeat item
  testObject = { id: 2, name: 'foo' };
  addNoRepeatItems([testObject], [{ id: 3, name: 'off' }], 'name')
  // [{ id: 3, name: 'off' }, { id: 2, name: 'foo' }];
  addNoRepeatItems([testObject], [{ id: 4, name: 'off' }], 'name')
  // [{ id: 3, name: 'off' }, { id: 2, name: 'foo' }];
*/
const addNoRepeatItems = (array, newItem, comp = 'id') => {
  // store the comparison  values in array
  const arr = [newItems, ...array];
  const unique = arr
    .map((e) => e[comp])

    // store the indexes of the unique objects
    .map((e, i, final) => final.indexOf(e) === i && i)

    // eliminate the false indexes & return unique objects
    .filter((e) => arr[e])
    .map((e) => arr[e]);

  return Array.from(unique);
  /*
  const arr = [newItem, ...array]
    return arr.filter((e, i) => arr.findIndex(a => a[comp] === e[comp]) === i);
  */
};