Strip custom prop-types in production

package.json

@@ -21,6 +21,13 @@
     "travis-deploy-once": "travis-deploy-once",
     "semantic-release": "semantic-release"
   },
+  "size-limit": [
+    {
+      "gzip": false,
+      "path": "lib/index.js",
+      "limit": "16.66 KB"
+    }
+  ],
   "repository": {
     "type": "git",
     "url": "https://github.com/reactjs/react-transition-group.git"
@@ -94,6 +101,7 @@
     "semantic-release": "^15.9.16",
     "semantic-release-alt-publish-dir": "^2.1.1",
     "sinon": "^6.3.4",
+    "size-limit": "^0.21.1",
     "travis-deploy-once": "^5.0.8",
     "webpack": "^4.19.1",
     "webpack-atoms": "^8.0.0",

src/CSSTransition.js

@@ -10,105 +10,6 @@ import { classNamesShape } from './utils/PropTypes';
 const addClass = (node, classes) => node && classes && classes.split(' ').forEach(c => addOneClass(node, c));
 const removeClass = (node, classes) => node && classes && classes.split(' ').forEach(c => removeOneClass(node, c));
 
-const propTypes = {
-  ...Transition.propTypes,
-
-  /**
-   * The animation classNames applied to the component as it enters, exits or has finished the transition.
-   * A single name can be provided and it will be suffixed for each stage: e.g.
-   *
-   * `classNames="fade"` applies `fade-enter`, `fade-enter-active`, `fade-enter-done`,
-   * `fade-exit`, `fade-exit-active`, `fade-exit-done`, `fade-appear`, and `fade-appear-active`.
-   * Each individual classNames can also be specified independently like:
-   *
-   * ```js
-   * classNames={{
-   *  appear: 'my-appear',
-   *  appearActive: 'my-active-appear',
-   *  enter: 'my-enter',
-   *  enterActive: 'my-active-enter',
-   *  enterDone: 'my-done-enter',
-   *  exit: 'my-exit',
-   *  exitActive: 'my-active-exit',
-   *  exitDone: 'my-done-exit',
-   * }}
-   * ```
-   *
-   * If you want to set these classes using CSS Modules:
-   *
-   * ```js
-   * import styles from './styles.css';
-   * ```
-   *
-   * you might want to use camelCase in your CSS file, that way could simply spread
-   * them instead of listing them one by one:
-   *
-   * ```js
-   * classNames={{ ...styles }}
-   * ```
-   *
-   * @type {string | {
-   *  appear?: string,
-   *  appearActive?: string,
-   *  enter?: string,
-   *  enterActive?: string,
-   *  enterDone?: string,
-   *  exit?: string,
-   *  exitActive?: string,
-   *  exitDone?: string,
-   * }}
-   */
-  classNames: classNamesShape,
-
-  /**
-   * A `<Transition>` callback fired immediately after the 'enter' or 'appear' class is
-   * applied.
-   *
-   * @type Function(node: HtmlElement, isAppearing: bool)
-   */
-  onEnter: PropTypes.func,
-
-  /**
-   * A `<Transition>` callback fired immediately after the 'enter-active' or
-   * 'appear-active' class is applied.
-   *
-   * @type Function(node: HtmlElement, isAppearing: bool)
-   */
-  onEntering: PropTypes.func,
-
-  /**
-   * A `<Transition>` callback fired immediately after the 'enter' or
-   * 'appear' classes are **removed** and the `done` class is added to the DOM node.
-   *
-   * @type Function(node: HtmlElement, isAppearing: bool)
-   */
-  onEntered: PropTypes.func,
-
-
-  /**
-   * A `<Transition>` callback fired immediately after the 'exit' class is
-   * applied.
-   *
-   * @type Function(node: HtmlElement)
-   */
-  onExit: PropTypes.func,
-
-  /**
-   * A `<Transition>` callback fired immediately after the 'exit-active' is applied.
-   *
-   * @type Function(node: HtmlElement)
-   */
-  onExiting: PropTypes.func,
-
-  /**
-   * A `<Transition>` callback fired immediately after the 'exit' classes
-   * are **removed** and the `exit-done` class is added to the DOM node.
-   *
-   * @type Function(node: HtmlElement)
-   */
-  onExited: PropTypes.func,
-};
-
 /**
  * A `Transition` component using CSS transitions and animations.
  * It's inspired by the excellent [ng-animate](http://www.nganimate.org/) library.
@@ -246,6 +147,103 @@ class CSSTransition extends React.Component {
   }
 }
 
-CSSTransition.propTypes = propTypes;
+CSSTransition.propTypes = {
+  ...Transition.propTypes,
+
+  /**
+   * The animation classNames applied to the component as it enters, exits or has finished the transition.
+   * A single name can be provided and it will be suffixed for each stage: e.g.
+   *
+   * `classNames="fade"` applies `fade-enter`, `fade-enter-active`, `fade-enter-done`,
+   * `fade-exit`, `fade-exit-active`, `fade-exit-done`, `fade-appear`, and `fade-appear-active`.
+   * Each individual classNames can also be specified independently like:
+   *
+   * ```js
+   * classNames={{
+   *  appear: 'my-appear',
+   *  appearActive: 'my-active-appear',
+   *  enter: 'my-enter',
+   *  enterActive: 'my-active-enter',
+   *  enterDone: 'my-done-enter',
+   *  exit: 'my-exit',
+   *  exitActive: 'my-active-exit',
+   *  exitDone: 'my-done-exit',
+   * }}
+   * ```
+   *
+   * If you want to set these classes using CSS Modules:
+   *
+   * ```js
+   * import styles from './styles.css';
+   * ```
+   *
+   * you might want to use camelCase in your CSS file, that way could simply spread
+   * them instead of listing them one by one:
+   *
+   * ```js
+   * classNames={{ ...styles }}
+   * ```
+   *
+   * @type {string | {
+   *  appear?: string,
+   *  appearActive?: string,
+   *  enter?: string,
+   *  enterActive?: string,
+   *  enterDone?: string,
+   *  exit?: string,
+   *  exitActive?: string,
+   *  exitDone?: string,
+   * }}
+   */
+  classNames: classNamesShape,
+
+  /**
+   * A `<Transition>` callback fired immediately after the 'enter' or 'appear' class is
+   * applied.
+   *
+   * @type Function(node: HtmlElement, isAppearing: bool)
+   */
+  onEnter: PropTypes.func,
+
+  /**
+   * A `<Transition>` callback fired immediately after the 'enter-active' or
+   * 'appear-active' class is applied.
+   *
+   * @type Function(node: HtmlElement, isAppearing: bool)
+   */
+  onEntering: PropTypes.func,
+
+  /**
+   * A `<Transition>` callback fired immediately after the 'enter' or
+   * 'appear' classes are **removed** and the `done` class is added to the DOM node.
+   *
+   * @type Function(node: HtmlElement, isAppearing: bool)
+   */
+  onEntered: PropTypes.func,
+
+
+  /**
+   * A `<Transition>` callback fired immediately after the 'exit' class is
+   * applied.
+   *
+   * @type Function(node: HtmlElement)
+   */
+  onExit: PropTypes.func,
+
+  /**
+   * A `<Transition>` callback fired immediately after the 'exit-active' is applied.
+   *
+   * @type Function(node: HtmlElement)
+   */
+  onExiting: PropTypes.func,
+
+  /**
+   * A `<Transition>` callback fired immediately after the 'exit' classes
+   * are **removed** and the `exit-done` class is added to the DOM node.
+   *
+   * @type Function(node: HtmlElement)
+   */
+  onExited: PropTypes.func,
+};
 
 export default CSSTransition

src/ReplaceTransition.js

@@ -3,16 +3,6 @@ import React from 'react';
 import { findDOMNode } from 'react-dom'
 import TransitionGroup from './TransitionGroup';
 
-const propTypes = {
-  in: PropTypes.bool.isRequired,
-  children(props, propName) {
-    if (React.Children.count(props[propName]) !== 2)
-      return new Error(`"${propName}" must be exactly two transition components.`)
-
-    return null;
-  },
-};
-
 /**
  * The `<ReplaceTransition>` component is a specialized `Transition` component
  * that animates between two children.
@@ -78,6 +68,14 @@ class ReplaceTransition extends React.Component {
   }
 }
 
-ReplaceTransition.propTypes = propTypes;
+ReplaceTransition.propTypes = {
+  in: PropTypes.bool.isRequired,
+  children(props, propName) {
+    if (React.Children.count(props[propName]) !== 2)
+      return new Error(`"${propName}" must be exactly two transition components.`)
+
+    return null;
+  },
+};
 
 export default ReplaceTransition;

src/TransitionGroup.js

@@ -11,55 +11,6 @@ import {
 
 const values = Object.values || (obj => Object.keys(obj).map(k => obj[k]))
 
-const propTypes = {
-  /**
-   * `<TransitionGroup>` renders a `<div>` by default. You can change this
-   * behavior by providing a `component` prop.
-   * If you use React v16+ and would like to avoid a wrapping `<div>` element
-   * you can pass in `component={null}`. This is useful if the wrapping div
-   * borks your css styles.
-   */
-  component: PropTypes.any,
-  /**
-   * A set of `<Transition>` components, that are toggled `in` and out as they
-   * leave. the `<TransitionGroup>` will inject specific transition props, so
-   * remember to spread them through if you are wrapping the `<Transition>` as
-   * with our `<Fade>` example.
-   */
-  children: PropTypes.node,
-
-  /**
-   * A convenience prop that enables or disables appear animations
-   * for all children. Note that specifying this will override any defaults set
-   * on individual children Transitions.
-   */
-  appear: PropTypes.bool,
-  /**
-   * A convenience prop that enables or disables enter animations
-   * for all children. Note that specifying this will override any defaults set
-   * on individual children Transitions.
-   */
-  enter: PropTypes.bool,
-  /**
-   * A convenience prop that enables or disables exit animations
-   * for all children. Note that specifying this will override any defaults set
-   * on individual children Transitions.
-   */
-  exit: PropTypes.bool,
-
-  /**
-   * You may need to apply reactive updates to a child as it is exiting.
-   * This is generally done by using `cloneElement` however in the case of an exiting
-   * child the element has already been removed and not accessible to the consumer.
-   *
-   * If you do need to update a child as it leaves you can provide a `childFactory`
-   * to wrap every child, even the ones that are leaving.
-   *
-   * @type Function(child: ReactElement) -> ReactElement
-   */
-  childFactory: PropTypes.func,
-}
-
 const defaultProps = {
   component: 'div',
   childFactory: child => child,
@@ -157,7 +108,55 @@ class TransitionGroup extends React.Component {
   }
 }
 
-TransitionGroup.propTypes = propTypes
+TransitionGroup.propTypes = {
+  /**
+   * `<TransitionGroup>` renders a `<div>` by default. You can change this
+   * behavior by providing a `component` prop.
+   * If you use React v16+ and would like to avoid a wrapping `<div>` element
+   * you can pass in `component={null}`. This is useful if the wrapping div
+   * borks your css styles.
+   */
+  component: PropTypes.any,
+  /**
+   * A set of `<Transition>` components, that are toggled `in` and out as they
+   * leave. the `<TransitionGroup>` will inject specific transition props, so
+   * remember to spread them through if you are wrapping the `<Transition>` as
+   * with our `<Fade>` example.
+   */
+  children: PropTypes.node,
+
+  /**
+   * A convenience prop that enables or disables appear animations
+   * for all children. Note that specifying this will override any defaults set
+   * on individual children Transitions.
+   */
+  appear: PropTypes.bool,
+  /**
+   * A convenience prop that enables or disables enter animations
+   * for all children. Note that specifying this will override any defaults set
+   * on individual children Transitions.
+   */
+  enter: PropTypes.bool,
+  /**
+   * A convenience prop that enables or disables exit animations
+   * for all children. Note that specifying this will override any defaults set
+   * on individual children Transitions.
+   */
+  exit: PropTypes.bool,
+
+  /**
+   * You may need to apply reactive updates to a child as it is exiting.
+   * This is generally done by using `cloneElement` however in the case of an exiting
+   * child the element has already been removed and not accessible to the consumer.
+   *
+   * If you do need to update a child as it leaves you can provide a `childFactory`
+   * to wrap every child, even the ones that are leaving.
+   *
+   * @type Function(child: ReactElement) -> ReactElement
+   */
+  childFactory: PropTypes.func,
+}
+
 TransitionGroup.defaultProps = defaultProps
 
 export default polyfill(TransitionGroup)