Redux Generators

Redux Generators is a lightweight, opinionated CLI that helps scaffold a scalable approach to Redux.

Many Redux applications maintain separate directories for actions, reducers, and selectors. While this may work for small apps, maintaining files in three different directories for every new feature becomes tedious as an application grows. Utilizing a single directory per feature is a more scalable approach, and allows a Redux directory structure to model the application's state tree.

If you've struggled with structuring or scaling Redux applications, or are just looking for some convenience tooling to get more work done faster, Redux Generators is for you.

Prerequisites

Redux Generators requires the following utilities:

• reselect selector library for Redux
• redux-actions Flux Standard Action utilities for Redux
• react-redux Official React bindings for Redux

If you aren't using them already, install and add to your project's dependencies with:

$ npm i reselect redux-actions react-redux --save

Sample usage

1. $ npm i redux-generators -g
2. $ rg make example --reducers=one,two,three --actions=oneAction,twoAction,threeAction

Available Commands

|Command|Description| | |---|---|---| |rg make <name>|Creates a reducer, actions, and selectors|Options & Usage| |rg make:reducer [options]|Creates a reducer.|Options & Usage| |rg make:action [options]|Creates actions.|Options & Usage| |rg make:selector [options]|Creates selectors.|Options & Usage| |rg make:container <name> [options]|Creates a container component|Options & Usage|

Global Options

|Option|Description| |---|---| |-r, --root [path]|The root path for the CLI, defaults to current working directory| |-p, --path [path]|The path based on root to insert the files, defaults to ./|

You can also add a .rgrc file to your project root to set config values used in redux-generators. Here is an example .rgrc file with all available options:

{
  "root": "./",
  "templates": "./templates",
  "reducerTemplate": "reducer.stub",
  "actionTemplate": "actions.stub",
  "selectorTemplate": "selectors.stub",
  "containerTemplate": "container.stub",
}

• root is the same as the global option
• templates is the path to your own custom templates directory
• reducerTemplate is the filename of your reducer template
• actionTemplate is the filename of your action template
• selectorTemplate is the filename of your selector template
• containerTemplate is the filename of your container template

Custom templates

By default redux-generators will generate files for you with some great conventions and standards in mind. However, if you would like to have a set of your own templates, you can do so by creating a folder in your root directory to house your custom templates. This folder path will need to be set inside of a .rgrc file and all four template files will need to be present. All template files are rendered using lodash's template method.

reducerTemplate gets passed the following data:

|Key|Type|Description| |---|---|---| |reducers|Array|A list of reducers that get combined together via combineReducers.| |actionTypes|Array|A list of action types to pass to the reducers handleActions method.|

actionTemplate gets passed the following data:

|Key|Type|Description| |---|---|---| |actions|Array|A list of action creators that are created via createAction.| |types|Array|A list of action types (based on actions) to pass to action creators.|

selectorTemplate gets passed the following data:

|Key|Type|Description| |---|---|---| |selectors|Array|A list of selectors that are created via createSelector.|

containerTemplate gets passed the following data:

|Key|Type|Description| |---|---|---| |name|String|The exported name of the container component.| |selector|String|A selector to be passed as the first argument to the connect method.|

$ rg make <name> [options]

Creates a new folder using <name> that houses three files:

• reducer.js
• actions.js
• selectors.js

Options

|Option|Description| |---|---| |--reducers|A comma separated list of initial reducer items to add into your reducer.js file| |--selectors|A comma separated list of initial selectors to add into your selectors.js file| |--actions|A comma separated list of initial actions to add into your actions.js file|

Example

// inside reducer.js
import { combineReducers } from 'redux';
import { handleActions } from 'redux-actions';

import {
  TESTER_TEST_ACTION,
} from 'path/to/action-types';

const foo = handleActions({
  [TESTER_TEST_ACTION]: (state, { payload }) => payload,
});

const bar = handleActions({
  [TESTER_TEST_ACTION]: (state, { payload }) => payload,
});

const baz = handleActions({
  [TESTER_TEST_ACTION]: (state, { payload }) => payload,
});

export default combineReducers({
  foo,
  bar,
  baz,
});

$ rg make:reducer [options]

Options

|Option|Description| |---|---| |--name|The filename for the reducer file| |--items|A comma separated list of initial reducer items to add into your reducer file| |--actions|A comma separated list of initial action types to add into your reducer file|

$ rg make:action [options]

Options

|Option|Description| |---|---| |--name|The filename for the actions file| |--items|A comma separated list of initial actions to add into your actions.js file|

Example

import { createAction } from 'redux-actions';

import {
  FOO_ACTION,
  BAR_ACTION,
  BAZ_ACTION,
} from 'path/to/action-types';

export const fooAction = createAction(FOO_ACTION);
export const barAction = createAction(BAR_ACTION);
export const bazAction = createAction(BAZ_ACTION);

$ rg make:selector [options]

Options

|Option|Description| |---|---| |--name|The filename for the selectors file| |--items|A list of initial selectors to add into your selectors.js file|

Example

import { createSelector } from 'reselect';

export const fooSelector = createSelector();
export const barSelector = createSelector();
export const bazSelector = createSelector();

$ rg make:container <name>

Creates a container component exported with the passed in <name>. The file name is derived from kebab and lowercasing the <name>.

Options

|Option|Description| |---|---| |--selector [name]|The selector you want to use for your container component|

Example

import { connect} from 'react-redux';

import {
  fooSelector,
} from 'path/to/selector';

const FooContainer = connect(
  fooSelector,
  dispatch => ({ })
);

export default FooContainer;

For more on how we structure Redux apps at Black Pixel, check out our Redux Handbook.

Website: blackpixel.com  ·  GitHub: @bpxl-labs  ·  Twitter: @blackpixel  ·  Medium: @bpxl-craft