Merge pull request #15 from savetheclocktower/upgrade-pegjs

Upgrade to PEGjs 0.10…

lib/snippet-body-parser.js

@@ -1,14 +1,18 @@
 let parser
 try {
+  // When the .pegjs file is stable and you're ready for release, run `npx
+  // pegjs lib/snippet-body.pegjs` to compile the parser. That way end users
+  // won't have to pay the cost of runtime evaluation.
   parser = require('./snippet-body')
 } catch (error) {
-  const {allowUnsafeEval} = require('loophole')
+  // When you're iterating on the parser, rename or delete `snippet-body.js` so
+  // you can make changes to the .pegjs file and have them reflected after a
+  // window reload.
   const fs = require('fs')
   const PEG = require('pegjs')
 
   const grammarSrc = fs.readFileSync(require.resolve('./snippet-body.pegjs'), 'utf8')
-  parser = null
-  allowUnsafeEval(() => parser = PEG.buildParser(grammarSrc))
+  parser = PEG.generate(grammarSrc)
 }
 
 module.exports = parser