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var path = require('path');
var packagejs = require('./package.json');
var conf = require('./conf.js');
// Sorted alphabetically!
var babelify = require('babelify');
var browserify = require('browserify');
var gulp = require("gulp");
var eslint = require('gulp-eslint');
var less = require("gulp-less");
var livereload = require("gulp-livereload");
var cleanCSS = require('gulp-clean-css');
var notify = require("gulp-notify");
var peg = require("gulp-peg");
var plumber = require("gulp-plumber");
var rename = require("gulp-rename");
var sourcemaps = require('gulp-sourcemaps');
var gutil = require("gulp-util");
var _ = require('lodash');
var uglifyify = require('uglifyify');
var buffer = require('vinyl-buffer');
var source = require('vinyl-source-stream');
var watchify = require('watchify');
var vendor_packages = _.difference(
_.union(
_.keys(packagejs.dependencies),
conf.js.vendor_includes
),
conf.js.vendor_excludes
);
var handleError = {errorHandler: notify.onError("Error: <%= error.message %>")};
/*
* Sourcemaps are a wonderful way to develop directly from the chrome devtools.
* However, generating correct sourcemaps is a huge PITA, especially on Windows.
* Fixing this upstream is tedious as apparently nobody really cares and
* a single misbehaving transform breaks everything.
* Thus, we just manually fix all paths.
*/
function fixSourceMaps(file) {
file.sourceMap.sources = file.sourceMap.sources.map(function (x) {
return path.relative(".", x).split(path.sep).join('/');
});
return "/";
}
// Browserify fails for paths starting with "..".
function fixBrowserifySourceMaps(file) {
file.sourceMap.sources = file.sourceMap.sources.map((x) => {
return x.replace("src/js/node_modules", "node_modules");
});
return fixSourceMaps(file);
}
function fixLessSourceMaps(file) {
file.sourceMap.sources = file.sourceMap.sources.map((x) => {
if(!x.startsWith("..")){
return "../src/css/" + x;
}
return x.replace("src/js/node_modules", "node_modules");
});
return fixSourceMaps(file);
}
function styles(files, dev){
return gulp.src(files)
.pipe(dev ? plumber(handleError) : gutil.noop())
.pipe(sourcemaps.init())
.pipe(less())
.pipe(dev ? gutil.noop() : cleanCSS())
.pipe(sourcemaps.write(".", {sourceRoot: fixLessSourceMaps}))
.pipe(gulp.dest(conf.static))
.pipe(livereload({auto: false}));
}
gulp.task("styles-app-dev", function () {
styles(conf.css.app, true);
});
gulp.task("styles-vendor-dev", function () {
styles(conf.css.vendor, true);
});
gulp.task("styles-app-prod", function () {
styles(conf.css.app, false);
});
gulp.task("styles-vendor-prod", function () {
styles(conf.css.app, false);
});
function buildScript(bundler, filename, dev) {
if (dev) {
bundler = watchify(bundler);
} else {
bundler = bundler.transform({global: true}, uglifyify);
}
function rebundle() {
return bundler.bundle()
.on('error', function(error) {
gutil.log(error + '\n' + error.codeFrame);
this.emit('end');
})
.pipe(dev ? plumber(handleError) : gutil.noop())
.pipe(source('bundle.js'))
.pipe(buffer())
.pipe(sourcemaps.init({loadMaps: true}))
.pipe(rename(filename))
.pipe(sourcemaps.write('.', {sourceRoot: fixBrowserifySourceMaps}))
.pipe(gulp.dest(conf.static))
.pipe(livereload({auto: false}));
}
// listen for an update and run rebundle
bundler.on('update', rebundle);
bundler.on('log', gutil.log);
bundler.on('error', gutil.log);
// run it once the first time buildScript is called
return rebundle();
}
function vendor_stream(dev) {
var bundler = browserify({
entries: [],
debug: true,
cache: {}, // required for watchify
packageCache: {} // required for watchify
});
for (var vp of vendor_packages) {
bundler.require(vp);
}
return buildScript(bundler, "vendor.js", dev);
}
gulp.task("scripts-vendor-dev", function () {
return vendor_stream(true);
});
gulp.task("scripts-vendor-prod", function () {
return vendor_stream(false);
});
function app_stream(dev) {
var bundler = browserify({
entries: [conf.js.app],
debug: true,
cache: {}, // required for watchify
packageCache: {} // required for watchify
});
for (var vp of vendor_packages) {
bundler.external(vp);
}
bundler = bundler.transform(babelify);
return buildScript(bundler, "app.js", dev);
}
gulp.task('scripts-app-dev', function () {
return app_stream(true);
});
gulp.task('scripts-app-prod', function () {
return app_stream(false);
});
gulp.task("eslint", function () {
return gulp.src(conf.js.eslint)
.pipe(plumber(handleError))
.pipe(eslint())
.pipe(eslint.format())
});
gulp.task("copy", function () {
return gulp.src(conf.copy, {base: conf.src})
.pipe(gulp.dest(conf.static));
});
gulp.task('templates', function(){
return gulp.src(conf.templates, {base: conf.src})
.pipe(gulp.dest(conf.dist));
});
gulp.task("peg", function () {
return gulp.src(conf.peg, {base: conf.src})
.pipe(plumber(handleError))
.pipe(peg())
.pipe(gulp.dest("src/"));
});
gulp.task(
"dev",
[
"copy",
"styles-vendor-dev",
"styles-app-dev",
"scripts-vendor-dev",
"peg",
"scripts-app-dev",
"templates"
]
);
gulp.task(
"prod",
[
"copy",
"styles-vendor-prod",
"styles-app-prod",
"scripts-vendor-prod",
"peg",
"scripts-app-prod",
"templates"
]
);
gulp.task("default", ["dev"], function () {
livereload.listen({auto: true});
gulp.watch(["src/css/vendor*"], ["styles-vendor-dev"]);
gulp.watch(["src/css/**"], ["styles-app-dev"]);
gulp.watch(conf.templates, ["templates"]);
gulp.watch(conf.peg, ["peg"]);
gulp.watch(["src/js/**"], ["eslint"]);
// other JS is handled by watchify.
gulp.watch(conf.copy, ["copy"]);
});
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