--- /dev/null
+// Copyright (C) 2014 Yusuke Suzuki <utatane.tea@gmail.com>
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import gulp from 'gulp';
+import mocha from 'gulp-mocha';
+import eslint from 'gulp-eslint';
+import minimist from 'minimist';
+import git from 'gulp-git';
+import bump from 'gulp-bump';
+import filter from 'gulp-filter';
+import tagVersion from 'gulp-tag-version';
+import 'babel-register';
+
+const SOURCE = [
+ '*.js'
+];
+
+let ESLINT_OPTION = {
+ parser: 'babel-eslint',
+ parserOptions: {
+ 'sourceType': 'module'
+ },
+ rules: {
+ 'quotes': 0,
+ 'eqeqeq': 0,
+ 'no-use-before-define': 0,
+ 'no-shadow': 0,
+ 'no-new': 0,
+ 'no-underscore-dangle': 0,
+ 'no-multi-spaces': 0,
+ 'no-native-reassign': 0,
+ 'no-loop-func': 0
+ },
+ env: {
+ 'node': true
+ }
+};
+
+gulp.task('test', function() {
+ let options = minimist(process.argv.slice(2), {
+ string: 'test',
+ default: {
+ test: 'test/*.js'
+ }
+ }
+ );
+ return gulp.src(options.test).pipe(mocha({reporter: 'spec'}));
+});
+
+gulp.task('lint', () =>
+ gulp.src(SOURCE)
+ .pipe(eslint(ESLINT_OPTION))
+ .pipe(eslint.formatEach('stylish', process.stderr))
+ .pipe(eslint.failOnError())
+);
+
+let inc = importance =>
+ gulp.src(['./package.json'])
+ .pipe(bump({type: importance}))
+ .pipe(gulp.dest('./'))
+ .pipe(git.commit('Bumps package version'))
+ .pipe(filter('package.json'))
+ .pipe(tagVersion({
+ prefix: ''
+ }))
+;
+
+gulp.task('travis', [ 'lint', 'test' ]);
+gulp.task('default', [ 'travis' ]);
+
+gulp.task('patch', [ ], () => inc('patch'));
+gulp.task('minor', [ ], () => inc('minor'));
+gulp.task('major', [ ], () => inc('major'));