PeterKow

export function isValidUKPhone(phone: string) {
  const re = /^(\+44\d{10}\b)/;
  return re.test(phone);
}

 describe('isValidUKPhone', () => {
    it('should return true as valid number', () => {
      const phone = '+447473222885';
      expect(isValidUKPhone(phone)).toBeTruthy();
    });

PeterKow

├── pages (SEO and Web related configuration)
├── server (node relates stuff. eg. Next.js)
├── static
├── src
|   ├── native (abstraction for cross-platform components)
|   ├── routing (abstraction for routing with routes)
|   ├── constcans (const variables)
|   ├── config (shared project configuration, env variables)
|   ├── constans ()
|   ├── helpers (simple helpers)

PeterKow

├── src
|   ├── orders (feature)
|       ├── asstes (type)
|           ├── orders.png
|       ├── components (type)
|           ├── order.jsx
|           ├── order-list.jsx
|           ├── order.styles.js/css
|       ├── logic (type)
|           ├── order.api.js

PeterKow

├── src
|   ├── asstets (type)
|       ├── order.png
|   ├── components (type)
|       ├── common
|           ├── button.jsx
|           ├── avatar.jsx
|       ├── order.jsx
|       ├── order-list.jsx
|       ├── payment.jsx

PeterKow

├── src
|   ├── orders (feature - all things related to Orders should be in this folder )
|       ├── order.styles.js/css
|       ├── order.api.js
|       ├── order.redux.js
|       ├── order.jsx
|       ├── order-list.jsx
|   ├── payments (feature - all things related to Payments should be in this folder )
|       ├── payment.api.js
|       ├── payment.redux.js

PeterKow

var obj = Immutable.fromJS({ data: 'Some data' })
obj.get('data') //Some data
obj.data //undefined

PeterKow

var obj = Immutable.fromJS({ data: 'No data' })
var newObj = newObj.set('data', 'Mutated successfully')

PeterKow

var obj = Immutable({ data: 'No data' })
obj.data //No data
// Note: There is getIn for nested objects

PeterKow

var obj = Immutable({ data: 'No data' })
var newObj = Immutable.set(obj, 'data', 'Mutated successfully')
//Alternative
var newObj = obj.set('data', 'Mutated successfully')

PeterKow

var array = Immutable.List([])

array[1] = "I'm going to mutate you!"
array[1] // "I'm going to mutate you!" - while immutablejs has it's internal strucure 

// To update
var newArray = array.push("I'm going to mutate you!")
newArray.get(0) // "I'm going to mutate you!"
newArray[0] // undefined