Action Todos

Action Todos is a reference implementation for a React/Typescript app with a simple state store.

To start the app, clone and npm start.

Features

The design spec is taken from TodoMVC, with the exception of routing. Here we use HTML5 history instead of the url hash.

State Management

This app is meant to explore an alternative to state management with Redux, with the following differences:

Actions are functions instead of objects, which cuts down on boilerplate by avoiding the need for Action Creators.
It's possible to do side effects directly in Actions, cutting down on indirection.

You can see the state management framework here.

To trigger a state change, call a BoundAction, and within it call store.replaceModel().
A model object must never be mutated in place. Always use safeMerge or similar.

Routing

To change the route, update the pathname in the model. A subscription to state changes will detect that the pathname has been updated and change the browser url accordingly.

Files & Directory Structure

actions contains functions that respond to events and may replace the model with a new model
browser contains modules that wrap browser API's
init contains modules necessary to bootstrap the app
reducers contains pure functions that accept a model and return an updated model
selectors contains pure functions that accept a model and return derived state
test contains test infrastructure
util contains utility functions that are not specific to this app
view contains React components for rendering the interface
store is the state container
model is the typedef of the app model (state)

App Shell

The app was bootstrapped with create-react-app, and is managed by the react-scripts package. Further documentation for create-react-app is available here.

Available Scripts

In the project directory, you can run:

`npm start`

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

`npm test`

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

`npm build`

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

`npm eject`

Note: this is a one-way operation. Once you eject, you can’t go back!

If you aren’t satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.

You don’t have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.

bgracie/action_todos