Gulp 使用命令行参数

命令行参数的好处就是方便控制,引用 Stack Overflow 的一个回答

The environment setting is available during all subtasks. So I can use this flag on the watch task too.

通过 require('gulp-util').env 获得参数:

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var util = require('gulp-util');
gulp.task('styles', function() {
return gulp.src(['src/styles/' + (util.env.theme ? util.env.theme : 'main') + '.scss'])
.pipe(compass({
config_file: './config.rb',
sass : 'src/styles',
css : 'dist/styles',
style : 'expanded'
}))
.pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'ff 17', 'opera 12.1', 'ios 6', 'android 4'))
.pipe(livereload(server))
.pipe(gulp.dest('dist/styles'))
.pipe(notify({ message: 'Styles task complete' }));
});

就可以这么用:

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gulp watch --theme literature

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