Error parsing JS that contains an identifier `macro`

Created by: BinaryMuse

I have been working on integrating Sweet.js into part of our build workflow and ran into an issue where the parser throws due to encountering an identifier macro that doesn't define a macro. (A macro is a first-class business entity in our system.) Is there a good way to work around this issue?

Here's a small reproducible test case:

macro id {
  rule {
    ($x)
  } => {
    $x
  }
}

function printMacro(macro) {
  if (!macro) console.log('not defined');
  else console.log(macro);
}

$ sjs file.js

/Users/btilley/.nvm/v0.10.26/lib/node_modules/sweet.js/lib/sweet.js:99
                    throw new SyntaxError(syn.printSyntaxError(source, err));
                          ^
SyntaxError: [enforest] Macro declaration must include body
    at expand$2 (/Users/btilley/.nvm/v0.10.26/lib/node_modules/sweet.js/lib/sweet.js:99:27)
    at parse (/Users/btilley/.nvm/v0.10.26/lib/node_modules/sweet.js/lib/sweet.js:113:29)
    at Object.compile (/Users/btilley/.nvm/v0.10.26/lib/node_modules/sweet.js/lib/sweet.js:121:19)
    at Object.exports.run (/Users/btilley/.nvm/v0.10.26/lib/node_modules/sweet.js/lib/sjs.js:70:27)
    at Object.<anonymous> (/Users/btilley/.nvm/v0.10.26/lib/node_modules/sweet.js/bin/sjs:7:23)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)

Using Sweet.js version 0.5.0.

Thanks!