coffee-react (cjsx) support

[spudly]

I would love to have support for coffee-react (.cjsx) files. I may even be willing to submit a pull request if someone provide some insight into how coffee-coverage works.

[jwalton]

I would welcome a PR for sure.

The 5 mile high view of coffee-coverage is; first we use coffee-script to parse the input and generate an AST. Then we visit every node in the AST with an instrumentor which, generally, adds some extra nodes into the resulting coffee-script. Finally we compile the resulting AST out into JavaScript.

All the information about where a particular fragment of source came from is based on the locationData found in the coffee-script node.

[GeoffreyBooth]

CoffeeScript 2 includes support for CSX/JSX: http://coffeescript.org/v2/#jsx

Such a file currently chokes coffee-coverage:

~/coffeescript/node_modules/coffee-coverage/lib/coffeeCoverage.js:279
      throw new CoverageError(“Could not parse “ + fileName + “: “ + err.stack);
      ^
CoverageError: Could not parse ~/coffeescript/documentation/examples/jsx.coffee:
[stdin]:9:4: error: missing / (unclosed regex)
  </aside>
   ^
    at Object.exports._runInstrumentor (/Volumes/Geoffrey/Sites/coffeescript/node_modules/coffee-coverage/lib/coffeeCoverage.js:279:13)
    at CoverageInstrumentor.exports.CoverageInstrumentor.CoverageInstrumentor.instrumentCoffee (/Volumes/Geoffrey/Sites/coffeescript/node_modules/coffee-coverage/lib/coffeeCoverage.js:237:24)