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gulpfile.js
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gulpfile.js
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/**
* Settings
* Turn on/off build features
*/
var settings = {
clean: true,
scripts: true,
polyfills: true,
styles: true,
svgs: true,
copy: true,
reload: true
};
/**
* Paths to project folders
*/
var paths = {
input: 'src/',
output: 'public/',
scripts: {
input: 'src/js/*',
polyfills: '.polyfill.js',
output: 'public/js/'
},
styles: {
input: 'src/sass/**/*.{scss,sass}',
output: 'public/css/'
},
svgs: {
input: 'src/svg/*.svg',
output: 'public/svg/'
},
copy: {
input: 'src/copy/**/*',
output: 'public/'
},
reload: './public/'
};
/**
* Template for banner to add to file headers
*/
var banner = {
main:
'/*!' +
' <%= package.name %> v<%= package.version %>' +
' | (c) ' + new Date().getFullYear() + ' <%= package.author.name %>' +
' | <%= package.license %> License' +
' | <%= package.repository.url %>' +
' */\n'
};
/**
* Gulp Packages
*/
// General
var {gulp, src, dest, watch, series, parallel} = require('gulp');
var del = require('del');
var flatmap = require('gulp-flatmap');
var lazypipe = require('lazypipe');
var rename = require('gulp-rename');
var header = require('gulp-header');
var package = require('./package.json');
// Scripts
var jshint = require('gulp-jshint');
var stylish = require('jshint-stylish');
var concat = require('gulp-concat');
var uglify = require('gulp-terser');
var optimizejs = require('gulp-optimize-js');
// Styles
var sass = require('gulp-sass');
var postcss = require('gulp-postcss');
var prefix = require('autoprefixer');
var minify = require('cssnano');
// SVGs
var svgmin = require('gulp-svgmin');
// BrowserSync
var browserSync = require('browser-sync');
/**
* Gulp Tasks
*/
// Remove pre-existing content from output folders
var cleanDist = function (done) {
// Make sure this feature is activated before running
if (!settings.clean) return done();
// Clean the dist folder
del.sync([
paths.output
]);
// Signal completion
return done();
};
// Repeated JavaScript tasks
var jsTasks = lazypipe()
.pipe(header, banner.main, {package: package})
.pipe(optimizejs)
.pipe(dest, paths.scripts.output)
.pipe(rename, {suffix: '.min'})
.pipe(uglify)
.pipe(optimizejs)
.pipe(header, banner.main, {package: package})
.pipe(dest, paths.scripts.output);
// Lint, minify, and concatenate scripts
var buildScripts = function (done) {
// Make sure this feature is activated before running
if (!settings.scripts) return done();
// Run tasks on script files
return src(paths.scripts.input)
.pipe(flatmap(function(stream, file) {
// If the file is a directory
if (file.isDirectory()) {
// Setup a suffix variable
var suffix = '';
// If separate polyfill files enabled
if (settings.polyfills) {
// Update the suffix
suffix = '.polyfills';
// Grab files that aren't polyfills, concatenate them, and process them
src([file.path + '/*.js', '!' + file.path + '/*' + paths.scripts.polyfills])
.pipe(concat(file.relative + '.js'))
.pipe(jsTasks());
}
// Grab all files and concatenate them
// If separate polyfills enabled, this will have .polyfills in the filename
src(file.path + '/*.js')
.pipe(concat(file.relative + suffix + '.js'))
.pipe(jsTasks());
return stream;
}
// Otherwise, process the file
return stream.pipe(jsTasks());
}));
};
// Lint scripts
var lintScripts = function (done) {
// Make sure this feature is activated before running
if (!settings.scripts) return done();
// Lint scripts
return src(paths.scripts.input)
.pipe(jshint())
.pipe(jshint.reporter('jshint-stylish'));
};
// Process, lint, and minify Sass files
var buildStyles = function (done) {
// Make sure this feature is activated before running
if (!settings.styles) return done();
// Run tasks on all Sass files
return src(paths.styles.input)
.pipe(sass({
outputStyle: 'expanded',
sourceComments: true
}))
.pipe(postcss([
prefix({
cascade: true,
remove: true
})
]))
.pipe(header(banner.main, {package: package}))
.pipe(dest(paths.styles.output))
.pipe(rename({suffix: '.min'}))
.pipe(postcss([
minify({
discardComments: {
removeAll: true
}
})
]))
.pipe(dest(paths.styles.output));
};
// Optimize SVG files
var buildSVGs = function (done) {
// Make sure this feature is activated before running
if (!settings.svgs) return done();
// Optimize SVG files
return src(paths.svgs.input)
.pipe(svgmin())
.pipe(dest(paths.svgs.output));
};
// Copy static files into output folder
var copyFiles = function (done) {
// Make sure this feature is activated before running
if (!settings.copy) return done();
// Copy static files
return src(paths.copy.input)
.pipe(dest(paths.copy.output));
};
// Watch for changes to the src directory
var startServer = function (done) {
// Make sure this feature is activated before running
if (!settings.reload) return done();
// Initialize BrowserSync
browserSync.init({
server: {
baseDir: paths.reload
}
});
// Signal completion
done();
};
// Reload the browser when files change
var reloadBrowser = function (done) {
if (!settings.reload) return done();
browserSync.reload();
done();
};
// Watch for changes
var watchSource = function (done) {
watch(paths.input, series(exports.default, reloadBrowser));
done();
};
/**
* Export Tasks
*/
// Default task
// gulp
exports.default = series(
cleanDist,
parallel(
buildScripts,
lintScripts,
buildStyles,
buildSVGs,
copyFiles
)
);
// Watch and reload
// gulp watch
exports.watch = series(
exports.default,
startServer,
watchSource
);