[SOLVED] Conditionals in gulp

Conditionals in gulp

I'm a bit confused over how to best set up conditionals in a gulp file and could use some clarification.

Am I right in that you cannot do ordinary if statements inside a pipe chain? If you can, how would you type it out?

Right now I'm using gulp-if to do something like this:

// Minify
.pipe( gulpif(env === 'production',
    minifyCSS({keepSpecialComments:0,})
))

// Rename
.pipe( gulpif(env === 'production',
    rename({suffix: '.min'})
))

But, these two blocks would optimally be inside the same if condition. Is this possible? I can't get that to work.

Solution

You could use lazypipe for minify and rename transforms. It would be something like this:

var minifyAndRenameCSS = lazypipe()
  .pipe(minifyCSS({keepSpecialComments:0})
  .pipe(rename({suffix: '.min'}));

gulp.task('build', function() {
  return gulp.src('*.css')
    .pipe(gulpif(env === 'production', minifyAndRenameCSS()))
});