fcc redux curriculum snippets

fcc-redux

this is for the free code camp course on Redux https://learn.freecodecamp.org/front-end-libraries/redux/create-a-redux-store

https://learn.freecodecamp.org/front-end-libraries/redux/copy-an-object-with-object-assign

• const newObject = Object.assign({}, obj1, obj2);

This creates newObject as a new object, which contains the properties that currently exist in obj1 and obj2.

• basically edit the properties mentioned
• doesn't mutate

const defaultState = {
  user: 'CamperBot',
  status: 'offline',
  friends: '732,982',
  community: 'freeCodeCamp'
};
undefined
console.log(Object.assign({}, defaultState, {status: 'online'}))

{user: "CamperBot", status: "online", friends: "732,982", community: "freeCodeCamp"}

const defaultState = {
  user: 'CamperBot',
  status: 'offline',
  friends: '732,982',
  community: 'freeCodeCamp'
};

const immutableReducer = (state = defaultState, action) => {
  switch(action.type) {
    case 'ONLINE':
      // don't mutate state here or the tests will fail
      return Object.assign({}, defaultState, {status: 'online'});
    default:
      return state;
  }
};

const wakeUp = () => {
  return {
    type: 'ONLINE'
  }
};

const store = Redux.createStore(immutableReducer);