babel-preset-react

This project's goal is to make a babel preset, to be used for React project built with webpack. That way, the react applications only needs one dependency, and one preset for all the thing concerning babel.

How to use

Install the dependency as dev dependencies, and use the preset. Preset have two options

• mode : Can be "development", "production", "test"
• hot : If hot reload should be activated

{
    "presets": [
        [
            "@thc/babel-preset-react",
            {
                "mode": "development",
                "hot": true
            }
        ]
    ]
}

Presets used

This preset re-uses existing presets :

• @babel/preset-env => ES2017 compatibility, based on browerlist query
• @babel/preset-react => JSX handling + better debugging

For production :

• babel-preset-minify => minifying code for production use (may be replaced in the future by uglify-es instead)

Plugins used

This preset re-uses existing plugins:

• @babel/plugin-proposal-decorators => handling decorators, annotations
• @babel/plugin-proposal-class-properties => handling setting class properties (static, easy syntax, ...)
• @babel/plugin-proposal-function-bind => easy binding with :: notation (this.boundFunc = ::this.func, or that::this.func)
• @babel/plugin-proposal-object-rest-spread => handling object spreading ({a,b,...c} syntax)
• @babel/plugin-proposal-optional-chaining => handling optional chaining (a?.b?.c instead of a && a.b && a.b.c)
• @babel/plugin-proposal-nullish-coalescing-operator => handling default value (a ?? "Default" instead of a ? a : "Default")
• @babel/plugin-transform-runtime => optimizing babel transform, by reusing helpers in babel/runtime (ES6 mode)
• @babel/plugin-syntax-dynamic-import => support for import('module') syntax
• babel-plugin-lodash => optimizing lodash import (import {add} from 'lodash' => import add from 'lodash/fp/add')

For development :

• react-hot-loader/babel => handling hot reload for React app (to use with some conf in webpack)

For prduction :

• @babel/plugin-transform-react-inline-element => inlining call to React API, for smaller bundle.
• @babel/plugin-transform-react-constant-elements => hoists static React tree, avoiding calls to React.createElement, and skipping reconciling phase for subtree
• babel-plugin-transform-react-remove-prop-types => Remove proptype declaration from source, for a smaller bundle

Rules :

• Commit must follow Conventional Commit convention
• Pre-commit package should be use to enforce linting, tests validations, ...