diff --git a/hooks/pre-commit b/hooks/pre-commit
index 6029825..5f60645 100755
--- a/hooks/pre-commit
+++ b/hooks/pre-commit
@@ -6,111 +6,85 @@ def puts_c(color, str)
 	puts "\x1b[#{color}m#{str}\x1b[0m"
 end
 
-# for tracking if bump was needed
-$bumped = false
-def did_bump
-	if !$bumped
-		puts "bump detected!"
-		if `which uglifyjs`.empty?
-			puts_c 31, "you need uglifyjs installed"
-			puts "run `sudo npm install -g uglify-js`"
-			exit 1
-		end
+class Source
+	attr_accessor :path, :v_regex
+
+	def initialize(path, v_regex)
+		@path = path
+		@v_regex = v_regex
 	end
-	$bumped = true
 end
 
+class Bumper
+	attr_accessor :sources, :bumped, :target_v
 
+	def initialize(sources)
+		@sources = sources
+	end
 
-# get package.json version
-pckg_path = 'package.json'
-package = JSON.parse File.read pckg_path
-v = package['version']
-
-
+	def start
 
-# check/bump version in `mustache.js` file
+		# get package.json version
+		package = JSON.parse File.read 'package.json'
+		@target_v = package['version']
 
-mjs_path = 'mustache.js'
-mjs = File.read mjs_path
-mjs_re = /mustache.version = "([\d\.]*)"/
+		@bumped = false
+		@sources.each {|source| bump_source(source)}
 
-if match = mjs.match(mjs_re)
-	mjs_v = match.captures[0]
-	if v != mjs_v then
-		did_bump
-		puts "> bumping version in file 'mustache.js': #{mjs_v} -> #{v}..."
-		mjs.gsub! mjs_re, "mustache.version = \"#{v}\""
-		File.open(mjs_path, 'w') {|f| f.write(mjs) }
-	end
-else
-	puts_c 31, "ERROR: Can't find 'mustache.version = \"x.x.x\"' in mustache.js"
-	exit 1
-end
+		# if bumped, do extra stuff and notify the user
+		if @bumped
 
+			# minify `mustache.js` using the Rakefile task
+			puts "> minifying `mustache.js`..."
+			`rake minify`
 
+			# stage files for commit
+			`git add package.json`
+			@sources.each {|source| `git add #{source.path}`}
+			`git add mustache.min.js`
+			`git commit -m ":ship: bump to version #{@target_v}"`
 
-# check/bump version in `mustache.js.nuspec` file
+			# notify codemonkey
+			puts "staged bumped files and created commit"
+			puts_c 32, "successfully bumped version to #{@target_v}!"
+			puts_c 33, "don't forget to `npm publish` and `spm publish`!"
+		end
 
-nspc_path = 'mustache.js.nuspec'
-nspc = File.read nspc_path
-nspc_re = /<version>([\d\.]*)<\/version>/
-if match = nspc.match(nspc_re)
-	nspc_v = match.captures[0]
-	if v != nspc_v then
-		did_bump
-		puts "> bumping version in file 'mustache.js.nuspec': #{nspc_v} -> #{v}..."
-		nspc.gsub! nspc_re, "<version>#{v}</version>"
-		File.open(nspc_path, 'w') {|f| f.write(nspc) }
+		exit 0
 	end
-else
-	puts_c 31, "ERROR: Can't find '<version>x.x.x</version>' in mustache.js.nuspec"
-	exit 1
-end
-
-
-# check/bump version in `bower.json` file
 
-bwr_path = 'bower.json'
-bwr = File.read bwr_path
-bwr_re = /"version": "([\d\.]*)"/
+	def bump_source(source)
+		file_buffer = File.read source.path
+		if match = file_buffer.match(source.v_regex)
+			file_v = match.captures[0]
+			if @target_v != file_v
+				did_bump
+				puts "> bumping version in file '#{source.path}': #{file_v} -> #{@target_v}..."
+				file_buffer[source.v_regex, 1] = @target_v
+				File.open(source.path, 'w') { |f| f.write file_buffer }
+			end
+		else
+			puts_c 31, "ERROR: Can't find version in '#{source.path}'"
+			exit 1
+		end
+	end
 
-if match = bwr.match(bwr_re)
-	bwr_v = match.captures[0]
-	if v != bwr_v
-		did_bump
-		puts "> bumping version in file 'bower.json': #{bwr_v} -> #{v}..."
-		bwr.gsub! bwr_re, "\"version\": \"#{v}\""
-		File.open(bwr_path, 'w') {|f| f.write(bwr) }
+	def did_bump
+		if !@bumped
+			puts 'bump detected!'
+			if `which uglifyjs`.empty?
+				puts_c 31, 'you need uglifyjs installed'
+				puts 'run `sudo npm install -g uglify-js`'
+				exit 1
+			end
+		end
+		@bumped = true
 	end
-else
-	puts_c 31, "ERROR: Can't find '\"version\": \"x.x.x\"' in 'bower.json'"
-	exit 1
 end
 
-
-
-# if bumped, do extra stuff and notify the user
-
-if $bumped
-
-	# minify `mustache.js` using the Rakefile task
-	puts "> minifying `mustache.js`..."
-	`rake minify`
-
-	# stage files for commit
-	`git add #{pckg_path}`
-	`git add #{mjs_path}`
-	`git add #{nspc_path}`
-	`git add #{bwr_path}`
-	`git add mustache.min.js`
-	`git commit -m "bump to version #{v}"`
-
-	# notify codemonkey
-	puts "staged bumped files and created commit"
-	puts_c 32, "successfully bumped version to #{v}!"
-	puts_c 33, "don't forget to `npm publish` and `spm publish`!"
-	exit 1
-
-end
-exit 0
\ No newline at end of file
+bumper = Bumper.new([
+	Source.new('mustache.js', /mustache.version = "([\d\.]*)"/),
+	Source.new('mustache.js.nuspec', /<version>([\d\.]*)<\/version>/),
+	Source.new('bower.json', /"version": "([\d\.]*)"/)
+])
+bumper.start