As announced, starting with React v0.14 (next release), the JSXTransformer.js won't be part of the release. Also `react-tools` npm package is no more. So whatchagonnawannado is switch to Babel. Here's how.

Build-time transform

Prerequisite: install Babel

$ npm install --global babel

Where you previously had this as part of your development/build process:

$ jsx --watch source/ build/

...now becomes

$ babel source/ --watch --out-dir build/

Easy-peasy!

In-browser transform

Required warning: in-browser transforms are just for testing and playing and prototyping. Never for live sites.

Now with that out of the way, let's see how to switch to Babel.

Prerequisite: a file called browser.js . You'll find in in your node_modules , e.g.

$ ls /usr/local/lib/node_modules/babel/node_modules/babel-core/browser.js

Slightly easier to find if you npm install babel-core :

$ ls /usr/local/lib/node_modules/babel-core/browser.js

Anyway, find browser.js and put it somewhere handy. Now where you used to have:

< script src = " react/build/react.js " > </ script > < script src = " react/build/JSXTransformer.js " > </ script >

.. now you do:

< script src = " react/build/react.js " > </ script > < script src = " babel/browser.js " > </ script >

Finally, instead of the invalid type="text/jsx" you used to add to your script tags, now you do type="text/babel" , like:

< script type = " text/babel " > React.render( < h1 id = " my-heading " > < span > < em > Hell </ em > o </ span > world! </ h1 > , document.getElementById('app') ); </ script >

That's all folks

Not too bad, eh? And the bonus: you get tons of ES6 (ECMAScript2015) features and beyond, just by adopting Babel. Enjoy!

For example directory structure and working examples with both Babel and JSXTransformer, navigate these waters.

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