Completely updated React, fixed #11, (hopefully)

goTorrentWebUI/node_modules/material-ui/transitions/Zoom.js.flow

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+// @inheritedComponent Transition
+
+import React from 'react';
+import PropTypes from 'prop-types';
+import Transition from 'react-transition-group/Transition';
+import { duration } from '../styles/transitions';
+import withTheme from '../styles/withTheme';
+import { reflow, getTransitionProps } from './utils';
+
+const styles = {
+  entering: {
+    transform: 'scale(1)',
+  },
+  entered: {
+    transform: 'scale(1)',
+  },
+};
+
+/**
+ * The Zoom transition can be used for the floating variant of the
+ * [Button](https://material-ui-next.com/demos/buttons/#floating-action-buttons) component.
+ * It uses [react-transition-group](https://github.com/reactjs/react-transition-group) internally.
+ */
+class Zoom extends React.Component {
+  handleEnter = node => {
+    const { theme } = this.props;
+    reflow(node); // So the animation always start from the start.
+
+    const { duration: transitionDuration, delay } = getTransitionProps(this.props, {
+      mode: 'enter',
+    });
+    node.style.transition = theme.transitions.create('transform', {
+      duration: transitionDuration,
+      delay,
+    });
+    node.style.webkitTransition = theme.transitions.create('transform', {
+      duration: transitionDuration,
+      delay,
+    });
+
+    if (this.props.onEnter) {
+      this.props.onEnter(node);
+    }
+  };
+
+  handleExit = node => {
+    const { theme } = this.props;
+    const { duration: transitionDuration, delay } = getTransitionProps(this.props, {
+      mode: 'exit',
+    });
+    node.style.transition = theme.transitions.create('transform', {
+      duration: transitionDuration,
+      delay,
+    });
+    node.style.webkitTransition = theme.transitions.create('transform', {
+      duration: transitionDuration,
+      delay,
+    });
+
+    if (this.props.onExit) {
+      this.props.onExit(node);
+    }
+  };
+
+  render() {
+    const { children, onEnter, onExit, style: styleProp, theme, ...other } = this.props;
+
+    const style = {
+      ...styleProp,
+      ...(React.isValidElement(children) ? children.props.style : {}),
+    };
+
+    return (
+      <Transition appear onEnter={this.handleEnter} onExit={this.handleExit} {...other}>
+        {(state, childProps) => {
+          return React.cloneElement(children, {
+            style: {
+              transform: 'scale(0)',
+              ...styles[state],
+              ...style,
+            },
+            ...childProps,
+          });
+        }}
+      </Transition>
+    );
+  }
+}
+
+Zoom.propTypes = {
+  /**
+   * A single child content element.
+   */
+  children: PropTypes.oneOfType([PropTypes.element, PropTypes.func]),
+  /**
+   * If `true`, the component will transition in.
+   */
+  in: PropTypes.bool,
+  /**
+   * @ignore
+   */
+  onEnter: PropTypes.func,
+  /**
+   * @ignore
+   */
+  onExit: PropTypes.func,
+  /**
+   * @ignore
+   */
+  style: PropTypes.object,
+  /**
+   * @ignore
+   */
+  theme: PropTypes.object.isRequired,
+  /**
+   * The duration for the transition, in milliseconds.
+   * You may specify a single timeout for all transitions, or individually with an object.
+   */
+  timeout: PropTypes.oneOfType([
+    PropTypes.number,
+    PropTypes.shape({ enter: PropTypes.number, exit: PropTypes.number }),
+  ]),
+};
+
+Zoom.defaultProps = {
+  timeout: {
+    enter: duration.enteringScreen,
+    exit: duration.leavingScreen,
+  },
+};
+
+export default withTheme()(Zoom);