snakeskin/gulpfile.js

Компилятор блочных шаблонов c поддержкой наследования.

// https://github.com/termi/es6-transpiler/issues/66
String.prototype.contains = String.prototype.contains || function (str, opt_pos) {
	return String.prototype.indexOf.apply(this, arguments) !== -1;
};

var gulp = require('gulp'),
	path = require('path');

var es6 = require('gulp-es6-transpiler'),
	monic = require('gulp-monic'),
	gcc = require('gulp-closure-compiler'),
	rename = require('gulp-rename'),
	header = require('gulp-header'),
	replace = require('gulp-replace'),
	bump = require('gulp-bump'),
	istanbul = require('gulp-istanbul'),
	jasmine = require('gulp-jasmine');

function getVersion() {
	delete require.cache[require.resolve('./lib/core')];
	return require('./lib/core').VERSION.join('.');
}

function getBuilds() {
	delete require.cache[require.resolve('./builds')];
	return Object(require('./builds'));
}

gulp.task('build', function (callback) {
	var builds = getBuilds(),
		i = 0;

	for (var key in builds) {
		if (!builds.hasOwnProperty(key)) {
			continue;
		}

		i++;
		var fullHead =
			'/*!\n' +
			' * Snakeskin v' + getVersion() + (key !== 'snakeskin' ? ' (' + key.replace(/^snakeskin\./, '') + ')' : '') + '\n' +
			' * https://github.com/kobezzza/Snakeskin\n' +
			' *\n' +
			' * Released under the MIT license\n' +
			' * https://github.com/kobezzza/Snakeskin/blob/master/LICENSE\n' +
			' *\n' +
			' * Date: ' + new Date().toUTCString() + '\n' +
			' */\n\n';

		gulp.src('./lib/core.js')
			.pipe(monic({flags: builds[key]}))

			.pipe(es6({
				disallowUnknownReferences: false,
				disallowDuplicated: false
			}))

			.pipe(replace(/\/\/\/\/#include/g, '//#include'))
			.pipe(monic())

			// https://github.com/termi/es6-transpiler/issues/61
			.pipe(replace(/(for\s*\(\s*var\s+[^=]+)= void 0 in/g, '$1 in'))

			// Фикс @param {foo} [bar=1] -> @param {foo} [bar]
			.pipe(replace(/(@param {.*?[^=]}) \[(\w+)=.*?[^\]]]/g, '$1 $2'))

			// {...string} -> {...(string|Array)}
			.pipe(replace(/{\.\.\.\(?([^}]+)\)?}/g, '{...($1|Array)}'))

			// *//*, foo *//* -> , foo
			.pipe(replace(/\/\*, (\w+) \*\//g, ', $1'))

			// *//*= foo *//* -> foo
			.pipe(replace(/\/\*= (\w+) \*\//g, '$1'))

			// //= foo -> foo
			.pipe(replace(/\/\/= (.*)/g, '$1'))

			// Пробельные символы в строках-шаблонах
			.pipe(replace(/\/\* cbws \*\/.*?[(]+"[\s\S]*?[^\\"]"[)]+;?(?:$|[}]+$)/gm, function (sstr) {
				return sstr.replace(/\\n|\t/g, '');
			}))

			.pipe(header(fullHead))
			.pipe(rename(key + '.js'))
			.pipe(gulp.dest('./dist/'))

			.on('end', function () {
				i--;

				if (!i) {
					callback();
				}
			});
	}
});

gulp.task('test', ['build'], function (callback) {
	gulp.src('./dist/snakeskin.js')
		.pipe(istanbul())
		.on('finish', function () {
			gulp.src(['./test/test.dev.js'])
				.pipe(jasmine())
				.pipe(istanbul.writeReports())
				.on('end', callback);
		});
});

function compile(dev) {
	return function () {
		var builds = getBuilds();

		for (var key in builds) {
			if (!builds.hasOwnProperty(key)) {
				continue;
			}

			var params = {
				compilerPath: 'bower_components/closure-compiler/compiler.jar',
				fileName: key + '.min.js',
				compilerFlags: {
					compilation_level: 'ADVANCED_OPTIMIZATIONS',
					use_types_for_optimization: null,
					language_in: 'ECMASCRIPT5',
					externs: [
						'predefs.js'
					]
				}
			};

			if (dev) {
				params.compilerFlags.jscomp_warning = 'invalidCasts';
			}

			gulp.src(path.join('./dist/', key + '.js'))
				.pipe(gcc(params))
				.pipe(header('/*! Snakeskin v' + getVersion() + (key !== 'snakeskin' ? ' (' + key.replace(/^snakeskin\./, '') + ')' : '') + ' | https://github.com/kobezzza/Snakeskin/blob/master/LICENSE */\n'))
				.pipe(gulp.dest('./dist/'));
		}
	}
}

gulp.task('compile', ['test'], compile());
gulp.task('compile-dev', ['test'], compile(true));

gulp.task('bump', function () {
	gulp.src('./*.json')
		.pipe(bump({version: getVersion()}))
		.pipe(gulp.dest('./'));
});

gulp.task('watch', function () {
	gulp.watch('./lib/*.js', ['build', 'bump']);
});

gulp.task('default', ['compile', 'bump']);