Bootstrap project

.babelrc

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+{
+  "presets": ["env", "react"]
+}

.editorconfig

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+# http://editorconfig.org
+root = true
+
+[*]
+end_of_line = LF
+charset = utf-8
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

.flowconfig

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+[ignore]
+
+[include]
+
+[libs]
+
+[lints]
+
+[options]
+
+[strict]

.gitignore

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+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

index.js

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+// @flow
+import * as React from 'react';
+import ReactGA from 'react-ga';
+import { withRouter } from 'react-router-dom';
+import type { Location, RouterHistory } from 'react-router-dom';
+
+type Props = {
+  id: string,
+  children?: React.Node,
+  debug: boolean,
+  location: Location,
+  history: RouterHistory
+};
+
+class ReactRouterGA extends React.Component<Props> {
+  constructor(props) {
+    super(props);
+    ReactGA.initialize(props.id);
+  }
+
+  componentDidMount() {
+    this.sendPageView(this.props.location);
+    this.props.history.listen(this.sendPageView);
+  }
+
+  sendPageView(location: Location) {
+    ReactGA.set({ page: location.pathname });
+    ReactGA.pageview(location.pathname);
+
+    if (this.props.debug) {
+      console.info(`[react-router-ga] Page view: ${location.pathname}`);
+    }
+  }
+
+  render() {
+    return this.props.children;
+  }
+}
+
+ReactRouterGA.defaultProps = {
+  debug: false
+};
+
+export default withRouter(Analytics);

package.json

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+{
+  "name": "react-router-ga",
+  "version": "0.0.0",
+  "main": "lib/index.js",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/fknussel/react-router-ga.git"
+  },
+  "author": {
+    "name": "Federico Knüssel",
+    "email": "fknussel@gmail.com"
+  },
+  "keywords": [
+    "react-router-ga",
+    "react-router-dom",
+    "react-ga",
+    "analytics",
+    "react-analytics",
+    "react-router-analytics"
+  ],
+  "scripts": {
+    "flow": "flow",
+    "build": "babel index.js --out-file lib/index.js"
+  },
+  "peerDependencies": {
+    "react": "^16.2.0",
+    "react-ga": "^2.3.5",
+    "react-router-dom": "^4.2.2"
+  },
+  "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "babel-preset-env": "^1.6.1",
+    "babel-preset-react": "^6.24.1",
+    "flow-bin": "^0.61.0"
+  }
+}