Run the precompiler module through es6 toolchain

Gruntfile.js

@@ -52,7 +52,7 @@ module.exports = function(grunt) {
         files: [{
           expand: true,
           cwd: 'lib/',
-          src: '**/!(index|precompiler).js',
+          src: '**/!(index).js',
           dest: 'dist/amd/'
         }]
       },

bin/handlebars

@@ -108,4 +108,4 @@ if (argv.help || (!argv.templates.length && !argv.version)) {
   return;
 }
 
-return require('../lib/precompiler').cli(argv);
+return require('../dist/cjs/precompiler').cli(argv);

lib/precompiler.js

@@ -1,11 +1,9 @@
 /*eslint-disable no-console */
-var fs = require('fs'),
-    Handlebars = require('./index'),
-    basename = require('path').basename,
-    SourceMap = require('source-map'),
-      SourceMapConsumer = SourceMap.SourceMapConsumer,
-      SourceNode = SourceMap.SourceNode,
-    uglify = require('uglify-js');
+import fs from 'fs';
+import * as Handlebars from './handlebars';
+import {basename} from 'path';
+import {SourceMapConsumer, SourceNode} from 'source-map';
+import uglify from 'uglify-js';
 
 module.exports.cli = function(opts) {
   if (opts.version) {
@@ -21,7 +19,7 @@ module.exports.cli = function(opts) {
     try {
       fs.statSync(template);
     } catch (err) {
-      throw new Handlebars.Exception('Unable to open template file "' + template + '"');
+      throw new Handlebars.Exception(`Unable to open template file "${template}"`);
     }
   });
 
@@ -33,21 +31,21 @@ module.exports.cli = function(opts) {
   }
 
   // Convert the known list into a hash
-  var known = {};
+  let known = {};
   if (opts.known && !Array.isArray(opts.known)) {
     opts.known = [opts.known];
   }
   if (opts.known) {
-    for (var i = 0, len = opts.known.length; i < len; i++) {
+    for (let i = 0, len = opts.known.length; i < len; i++) {
       known[opts.known[i]] = true;
     }
   }
 
   // Build file extension pattern
-  var extension = opts.extension.replace(/[\\^$*+?.():=!|{}\-\[\]]/g, function(arg) { return '\\' + arg; });
+  let extension = opts.extension.replace(/[\\^$*+?.():=!|{}\-\[\]]/g, function(arg) { return '\\' + arg; });
   extension = new RegExp('\\.' + extension + '$');
 
-  var output = new SourceNode();
+  let output = new SourceNode();
   if (!opts.simple) {
     if (opts.amd) {
       output.add('define([\'' + opts.handlebarPath + 'handlebars.runtime\'], function(Handlebars) {\n  Handlebars = Handlebars["default"];');
@@ -66,24 +64,24 @@ module.exports.cli = function(opts) {
     output.add('{};\n');
   }
   function processTemplate(template, root) {
-    var path = template,
+    let path = template,
         stat = fs.statSync(path);
     if (stat.isDirectory()) {
       fs.readdirSync(template).map(function(file) {
-        var childPath = template + '/' + file;
+        let childPath = template + '/' + file;
 
         if (extension.test(childPath) || fs.statSync(childPath).isDirectory()) {
           processTemplate(childPath, root || template);
         }
       });
     } else {
-      var data = fs.readFileSync(path, 'utf8');
+      let data = fs.readFileSync(path, 'utf8');
 
       if (opts.bom && data.indexOf('\uFEFF') === 0) {
         data = data.substring(1);
       }
 
-      var options = {
+      let options = {
         knownHelpers: known,
         knownHelpersOnly: opts.o
       };
@@ -103,11 +101,11 @@ module.exports.cli = function(opts) {
       }
       template = template.replace(extension, '');
 
-      var precompiled = Handlebars.precompile(data, options);
+      let precompiled = Handlebars.precompile(data, options);
 
       // If we are generating a source map, we have to reconstruct the SourceNode object
       if (opts.map) {
-        var consumer = new SourceMapConsumer(precompiled.map);
+        let consumer = new SourceMapConsumer(precompiled.map);
         precompiled = SourceNode.fromStringWithSourceMap(precompiled.code, consumer);
       }
 

spec/precompiler.js

@@ -6,7 +6,7 @@ describe('precompiler', function() {
   }
 
   var Handlebars = require('../lib'),
-      Precompiler = require('../lib/precompiler'),
+      Precompiler = require('../dist/cjs/precompiler'),
       fs = require('fs'),
       uglify = require('uglify-js');