Flux Pattern (uni-directional)
https://code-cartoons.com/a-cartoon-guide-to-flux-6157355ab207

• Immutability
  • No side-effects
  • Predictable data
• Functional methods
  • map/filter/reduce
    • w3Schools array functions
• Higher Order Components/Functions
  • Reusability and Composition

• fn(state, props) == UI
• Local state suggestions from: https://medium.com/@robftw/characteristics-of-an-ideal-react-architecture-883b9b92be0b
  • No local state other than:
    • Animation/triggering of CSS Classes
    • UI control that doesn't involve business logic or dependent on other components
    • Extremely trivial UI related variables that won't cause side effects
    • Standalone libraries

React Router
https://github.com/ReactTraining/react-router

Guide:
https://reacttraining.com/react-router/web/guides/quick-start

Redux
https://redux.js.org/

Redux DevTools
Chrome Extension

This is a must have for Redux development.

Great article if you want to hone your skills:
https://codeburst.io/redux-devtools-for-dummies-74566c597d7

Redux Thunk
https://github.com/reduxjs/redux-thunk

"Thunks are the recommended middleware for basic Redux side effects logic, including complex synchronous logic that needs access to the store, and simple async logic like AJAX requests."

Redux-Sagas
https://github.com/redux-saga/redux-saga

Similar concept to thunk using Middleware to control side-effects in a React-Redux application, but with the added bonus of using ES6 Generators to control async flow and increase readability.

More on Generators

Normalized data structures by Id (Relational Table Model)

{
  entities: {
    Post: {
      itemById: {
        "post1" : {
          id: "post1"
          author: "author1"
          body: "..."
          comments: ["comment1", "comment2"]
        },
        "post2" : {
          id: "post2"
          author: "author2"
          body: "..."
          comments: ["comment3", "comment4", "comment5"]
        },
      },
      items: ["post1", "post2"],
      meta: {},
    },
    User: {
      itemsById: {
        "user1": {
          username: "user1",
          name: "User 1",
        },
        "user2": {
          username: "user2",
          name: "User 2",
        },
        "user3": {
          username: "user3",
          name: "User 3",
        },
      },
      items: ["user1", "user2", "user3"],
      meta: {},
    },
    Comment: {
      itemsById: {
          "comment1": {
            userId: "user1",
            postId: "post1",
            body: { ... },
          },
          "comment2": {
            userId: "user2",
            postId: "post2",
            body: { ... },
          },
          "comment3": {
            userId: "user3",
            postId: "post3",
            body: { ... },
          },
          "comment4": {
            userId: "user4",
            postId: "post4",
            body: { ... },
          },
          "comment5": {
            userId: "user5",
            postId: "post5",
            body: { ... },
          },
        },
        items: ["comment1", "comment2", "comment3", "comment4", "comment5"],
        meta: {}
    },
  },
  
  
  simpleDomainData1: {...},
  simpleDomainData2: {...},
}

Removes the deeply nested structures as your state grows in size and keeps components from re-rendering accidentally.

.
├── /android/
├── /ios/
|
├── /assets
│   ├── /fonts/
│   ├── /images/
│   ├── /videos/
|
├── /app or /src
│   ├── /ducks/  // See "Ducks"
│   ├── /scenes/
│   |   ├── /App
│   |   |   ├── /_/
│   |   |   ├── /App.js
│   |   |   └── /index.js
|   |   ├── /MyScene/
|   |   |   ├── /__tests__/
|   |   |   ├── /_
|   |   |   |   ├── /MySubcomponent
|   |   |   |       ├── /__tests__/
|   |   |   |       ├── /MySubcomponent.js
│   |   |   |       └── /index.js
│   |   |   ├── /MyScene.js
│   |   |   └── /index.js
│   ├── /shared/
|   |   ├── /SharedAppSpecificComponent
|   |   |   ├── /__tests__/
|   |   |   ├── /SharedAppSpecificComponent.js
|   |   |   └── /index.js
│   |   └── /types.js
|   ├── /store/ // configureStore.js + middleware
|   └── /utils/ // helper functions, etc.
|
├── /lib
|   ├── /Button
|       ├── /__tests__/
|       ├── /Button.js
|       └── /index.js
|
├── /tools/  //Build scripts, other tools
├── /node_modules/
└── package.json

https://github.com/kylpo/react-playbook/blob/master/component-architecture/5_Example-App-Structure.md

/lib/ explanation: Every component that is not "app specific" or a primitive component can be a candidate to be moved to the /lib/ folder. This allows for the possible side effect of hand-rolling your own component library as you code!

Primitive components are those that take in only primitives as their props and are functionally pure.

.
├── /ducks/
    ├── /MyDuck/
    |   ├── /__tests__/
    |   ├── actions.js
    |   ├── index.js
    |   ├── reducers.js
    |   ├── selectors.js
    |   ├── types.js
    |   ├── urls.js
    |   └── utils.js
    ├── /utils/ // Reducer specific utils
    ├── rootReducer.js
    └── types.js

https://medium.freecodecamp.org/scaling-your-redux-app-with-ducks-6115955638be

• Write a stateless functional component first
  • if (component requires state or life-cycle) Consider Hooks
  • if (component is comprised of multiple components or smaller pieces of functionality) Create container component
  • Move shared components out
    • if (app dependent) Keep in shared/MyComponent
    • if (!app dependent or primitive) Move to lib folder
• Avoid re-rendering component if possible

Semantic UI React
https://github.com/Semantic-Org/Semantic-UI-React

A JQuery-free version of Semantic UI that comes with React-based components. Semantic UI is great for themeing as well.

Jest
https://jestjs.io/

Most popular React testing library. Comes with snapshot comparisons which is very useful for testing pure components.

Note: Function spies are now included included in Jest, so I've removed sinon for now

Enzyme
https://airbnb.io/enzyme/

A popular addition to Jest that provides additional functionality to traversing through component trees, as well as helper functions for testing, triggering user events being an example.

From: https://github.com/kylpo/react-playbook/blob/master/best-practices/react.md

Write component tests that accomplish the following goals (from Getting Started with TDD in React)

• It renders
• It renders the correct thing
  • Default props
  • Varied props
• It renders the different states
• Test events
• Test edge cases
  • e.g. something that uses an array should be thrown an empty array

https://reactjs.org/community/starter-kits.html

This list contains many popular choices, but your choice is yours. Getting a good starter kit depends entirely on what you're looking to get out of your project and team.

Babel
https://babeljs.io/

Transpiles your javascript down from the latest standards to backwards compatible, browser friendly source. Used for transpiling JSX to JS.

Webpack
https://webpack.js.org/

Bundles your files into static assets that are ready for production deploy. Many extensible plugins available.

ESLint
https://eslint.org/

Keeps your code nice and tidy by yelling at you with squigglies. You can link this to your IDE.

Great ESLint configs:
prettier-eslint
eslint-config-airbnb

From: http://www.guyroutledge.co.uk/blog/git-branch-naming-conventions/

type/component-name/title

Common Types:

• feature
• fix
• hot-fix
• refactor
• update
• upgrade
• remove

Component Name example:
login-form

Title example:
hoc-formik-input

Formik
https://github.com/jaredpalmer/formik

Creates an ephemeral state held by its components that abstracts away all the boilerplate that goes into creating and maintaining forms.

Reselect
https://github.com/reduxjs/reselect

Creates a selector where the first functions passed in compute props for a final function. If none of those props have changed, then that function is not run and the result from the previous invocation is returned.

This keeps the state from needlessly causing components to re-render.

classnames
https://github.com/JedWatson/classnames

Takes in conditionals that returns a space-delimited string for className.

import classnames from 'classnames';

let classes = classnames('sd-date', {
  current: date.month() === this.props.month,
  future: date.month() > this.props.month,
  past: date.month() < this.props.month
});

return (
  <button className={classes} />

  vs

  <button className={`button-default-style ${isActive ? "active" : ""}`} />
);

Visual Studio Code
https://code.visualstudio.com/

Microsoft has opensourced this light-weight and highly extensible IDE. My personal favorite.