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chart/zoom/gulpfile.js

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+var gulp = require('gulp'),
+    concat = require('gulp-concat'),
+    uglify = require('gulp-uglify'),
+    util = require('gulp-util'),
+    jshint = require('gulp-jshint'),
+    replace = require('gulp-replace'),
+    insert = require('gulp-insert'),
+    inquirer = require('inquirer'),
+    semver = require('semver'),
+    exec = require('child_process').exec,
+    fs = require('fs'),
+    package = require('./package.json'),
+    browserify = require('browserify'),
+    streamify = require('gulp-streamify'),
+    source = require('vinyl-source-stream'),
+    merge = require('merge-stream');
+
+var srcDir = './src/';
+var outDir = './';
+
+var header = "/*!\n\
+ * chartjs-plugin-zoom\n\
+ * http://chartjs.org/\n\
+ * Version: {{ version }}\n\
+ *\n\
+ * Copyright 2016 Evert Timberg\n\
+ * Released under the MIT license\n\
+ * https://github.com/chartjs/chartjs-plugin-zoom/blob/master/LICENSE.md\n\
+ */\n";
+
+gulp.task('build', buildTask);
+gulp.task('bump', bumpTask);
+gulp.task('jshint', jshintTask);
+
+function buildTask() {
+  var nonBundled = browserify('./src/chart.zoom.js')
+    .ignore('chart.js')
+    .ignore('hammerjs')
+    .bundle()
+    .pipe(source('chartjs-plugin-zoom.js'))
+    .pipe(insert.prepend(header))
+    .pipe(streamify(replace('{{ version }}', package.version)))
+    .pipe(gulp.dest(outDir))
+    .pipe(streamify(uglify({
+      preserveComments: 'some'
+    })))
+    .pipe(streamify(concat('chartjs-plugin-zoom.min.js')))
+    .pipe(gulp.dest(outDir));
+
+  return nonBundled;
+
+}
+
+/*
+ *  Usage : gulp bump
+ *  Prompts: Version increment to bump
+ *  Output: - New version number written into package.json & bower.json
+ */
+function bumpTask(complete) {
+  util.log('Current version:', util.colors.cyan(package.version));
+  var choices = ['major', 'premajor', 'minor', 'preminor', 'patch', 'prepatch', 'prerelease'].map(function(versionType) {
+    return versionType + ' (v' + semver.inc(package.version, versionType) + ')';
+  });
+  inquirer.prompt({
+    type: 'list',
+    name: 'version',
+    message: 'What version update would you like?',
+    choices: choices
+  }, function(res) {
+    var increment = res.version.split(' ')[0],
+      newVersion = semver.inc(package.version, increment);
+
+    // Set the new versions into the bower/package object
+    package.version = newVersion;
+    bower.version = newVersion;
+
+    // Write these to their own files, then build the output
+    fs.writeFileSync('package.json', JSON.stringify(package, null, 2));
+    fs.writeFileSync('bower.json', JSON.stringify(bower, null, 2));
+
+    complete();
+  });
+}
+
+function jshintTask() {
+  return gulp.src(srcDir + '**/*.js')
+    .pipe(jshint('config.jshintrc'))
+    .pipe(jshint.reporter('jshint-stylish'))
+    .pipe(jshint.reporter('fail'));
+}