EBS Utils

Technologies

1. ESLint + Prettier
2. Typescript
3. TS Compiler
4. Tests using Mocha/Enzyme

Todo:

(scroll down to see more information about every task)

1. Create filter function
2. Create map function
3. Create find function
4. Create concat function
5. Create pipe

All the functions should not use regular filter, map, find and concat, they should be realized using for(), while() and etc ..

filter

• filters elements of array

const arr = ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present'];

filter(arr, (item) => item.length > 6); // returns ["exuberant", "destruction", "present"]

map

const arr = ['spray', 'limit'];

map(arr, (item, index) => ({ id: index, name: item })); // returns [{ id: 0, name: 'spray' }, { id: 1, name: 'limit' }]

find

const arr = [
  { id: 0, name: 'spray' },
  { id: 1, name: 'limit' },
];
const id = 1;

find(arr, (item) => item.id === id); // returns { id: 1, name: 'limit' }

concat

const arr1 = ['spray', 'limit', 'elite'];
const arr2 = ['exuberant', 'destruction', 'present'];

concat(arr1, arr2); // returns ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present']

pipe

const arr = ['spray', 'limit', 'elite', 'exuberant', 'destruction'];

pipe(arr, [
  filter((item) => item.length > 6), // returns ["exuberant", "destruction"]
  map((item, index) => ({ id: index, name: item })), // returns [{ id: 0, name: 'exuberant' }, { id: 1, name: 'destruction' }]
]);

// pipe returns [{ id: 0, name: 'exuberant' }, { id: 1, name: 'destruction' }]

• Noticed that all the functions such as filter, map, find and concat should not expect first argument (array) in case when they're in pipe, it should be passed automatically.