babel-plugin-transform-react-remove-prop-types

What is babel-plugin-transform-react-remove-prop-types?

The babel-plugin-transform-react-remove-prop-types package is a Babel plugin that removes unnecessary React propTypes from the production build. This can help reduce the file size of your bundle and improve performance by eliminating development-only checks.

What are babel-plugin-transform-react-remove-prop-types's main functionalities?

Remove PropTypes from React Components

This feature automatically strips out propTypes from your React components when building for production, which can lead to smaller bundle sizes and potentially faster application performance since the propTypes checks are not included.

import PropTypes from 'prop-types';

function MyComponent(props) {
  // ...
}

MyComponent.propTypes = {
  name: PropTypes.string
};

// After transformation with babel-plugin-transform-react-remove-prop-types
// The propTypes will be removed in production builds.

Option to remove PropTypes by wrapping them with a condition

This feature allows you to wrap your propTypes definitions in a condition that checks the environment. The plugin will remove the entire condition in production builds, effectively removing the propTypes.

if (process.env.NODE_ENV !== 'production') {
  MyComponent.propTypes = {
    name: PropTypes.string
  };
}

// After transformation with babel-plugin-transform-react-remove-prop-types
// The propTypes will be removed in production builds, as the condition will be false.

Option to remove or wrap PropTypes with a custom function

This feature provides the ability to define a custom function that will be used to remove or wrap propTypes. This can be useful if you have a custom build process or want to apply more complex logic to the removal of propTypes.

MyComponent.propTypes = removePropTypesInProduction({
  name: PropTypes.string
});

// After transformation with babel-plugin-transform-react-remove-prop-types
// The removePropTypesInProduction function will be replaced with an empty object or removed entirely in production builds.

Other packages similar to babel-plugin-transform-react-remove-prop-types

babel-plugin-transform-react-pure-class-to-function

This package transforms React class components that could be functions into functions. While it doesn't deal with propTypes directly, it is similar in the sense that it optimizes React components for production.

babel-plugin-transform-react-inline-elements

This Babel plugin transforms JSX elements to ReactElement objects directly, which can improve performance in some cases. It's similar in its goal of optimizing React applications for production.

README

babel-plugin-transform-react-remove-prop-types

Remove unnecessary React propTypes from the production build.

Installation

npm install --save-dev babel-plugin-transform-react-remove-prop-types

The problem solved

Remove unnecessary React propTypes from the production build. You can save bandwidth by removing them.

Example

In

const Baz = () => (
  <div />
);

Baz.propTypes = {
  foo: React.PropTypes.string
};

Out

const Baz = () => (
  <div />
);

Usage

Via .babelrc (Recommended)

.babelrc

without options:

{
  "env": {
    "production": {
      "plugins": ["transform-react-remove-prop-types"]
    }
  }
}

with options:

{
  "env": {
    "production": {
      "plugins": ["transform-react-remove-prop-types", {"mode": "wrap"}]
    }
  }
}

Via CLI

babel --plugins transform-react-remove-prop-types script.js

Via Node API

without options:

require('babel-core').transform('code', {
  plugins: [
    'transform-react-remove-prop-types',
  ],
});

with options:

require('babel-core').transform('code', {
  plugins: [
    [
      'transform-react-remove-prop-types',
      {mode: 'wrap'},
    ],
  ],
});

Options

• mode two modes are available
• remove (default): the propTypes definitions are removed from the source code.
• wrap: the propTypes definitions are wrapped with the following code:

if (process.env.NODE_ENV !== "production") {
  Foo.propTypes = {
    bar: React.PropTypes.string,
  };
}

This mode is quite useful for lib authors. However, there is some limitation. We do not support the old React.createClass syntax nor the name less classes yet. In those cases, we keep the propTypes.

License

MIT