return function (err) {

if (err) {

var error = new Error('build sequence failed');

error.showStack = false;

done(error);

} else {

done();

}

};

var args = ['--'].concat(globs);

fork('./tools/traceur-jasmine', args, {

stdio: 'inherit'

}).on('close', function jasmineCloseHandler(exitCode) {

if (exitCode && treatTestErrorsAsFatal) {

var err = new Error('Jasmine tests failed');

// Mark the error for gulp similar to how gulp-utils.PluginError does it.

// The stack is not useful in this context.

err.showStack = false;

done(err);

} else {

done();

}

});

return jsserve(gulp, gulpPlugins, {

path: CONFIG.dest.js.dev.es5,

port: 8000

})();

return jsserve(gulp, gulpPlugins, {

path: CONFIG.dest.js.prod.es5,

port: 8001

})();

return jsserve(gulp, gulpPlugins, {

path: CONFIG.dest.js.dart2js,

port: 8002

})();

var dgeniPackage = options.package;

var distDocsPath = options.path;

var taskPrefix = options.prefix;

gulp.task(taskPrefix + '/dgeni', function() {

try {

var dgeni = new Dgeni([require(dgeniPackage)]);

return dgeni.generate();

} catch(x) {

console.log(x);

console.log(x.stack);

throw x;

}

});

gulp.task(taskPrefix + '/assets', ['docs/bower'], function() {

return gulp.src('docs/bower_components/**/*')

.pipe(gulp.dest(distDocsPath + '/lib'));

});

gulp.task(taskPrefix + '/app', function() {

return gulp.src('docs/app/**/*')

.pipe(gulp.dest(distDocsPath));

});

gulp.task(taskPrefix, [taskPrefix + '/assets', taskPrefix + '/app', taskPrefix + '/dgeni']);

gulp.task(taskPrefix + '/watch', function() {

return watch('docs/app/**/*', [taskPrefix + '/app']);

});

gulp.task(taskPrefix + '/test', function (done) {

runJasmineTests(['docs/**/*.spec.js'], done);

});

gulp.task(taskPrefix + '/serve', function() {

gulp.src(distDocsPath + '/')

.pipe(webserver({

fallback: 'index.html'

}));

});

var cmd = process.platform === 'win32' ? 'node_modules\\.bin\\karma run ' :

'node node_modules/.bin/karma run ';

cmd += configFile;

exec(cmd, function(e, stdout) {

// ignore errors, we don't want to fail the build in the interactive (non-ci) mode

// karma server will print all test failures

done();

});