Collect size metrics

bench/dist-size.js

@@ -0,0 +1,15 @@
+var _ = require('underscore'),
+    fs = require('fs');
+
+module.exports = function(grunt, callback) {
+  var distFiles = fs.readdirSync('dist'),
+      distSizes = {};
+
+  _.each(distFiles, function(file) {
+    var stat = fs.statSync('dist/' + file);
+    distSizes[file.replace(/\.js/, '').replace(/\./g, '_')] = stat.size;
+  });
+
+  grunt.log.writeln('Distribution sizes: ' + JSON.stringify(distSizes, undefined, 2));
+  callback([distSizes]);
+};

bench/precompile-size.js

@@ -0,0 +1,19 @@
+var _ = require('underscore'),
+    templates = require('./templates');
+
+module.exports = function(grunt, callback) {
+  // Deferring to here in case we have a build for parser, etc as part of this grunt exec
+  var Handlebars = require('../lib/handlebars');
+
+  var templateSizes = {};
+  _.each(templates, function(info, template) {
+    var src = info.handlebars,
+        compiled = Handlebars.precompile(src, {}),
+        knownHelpers = Handlebars.precompile(src, {knownHelpersOnly: true, knownHelpers: info.helpers});
+
+    templateSizes[template] = compiled.length;
+    templateSizes['knownOnly_' + template] = knownHelpers.length;
+  });
+  grunt.log.writeln('Precompiled sizes: ' + JSON.stringify(templateSizes, undefined, 2));
+  callback([templateSizes]);
+};