Suppress no plugins warning

When you run postcss without any plugins, you get this warning:

https://github.com/postcss/postcss/blob/c33ffa6942317b021a419a19e69a88bed725a83e/lib/processor.es6#L101-L105

This makes sense for the most common use cases. However, I’m running postcss in my plugin (to process imports) and I want the output AST (result.root). My plugin dynamically sets which plugins will be used (which can be none), so many times this warning will be output, even though the user hasn’t done anything wrong. I understand my use case is pretty special, so I’m asking for a way to suppress this warning, perhaps through an option.

My choices right now are:

1. Detect when the plugins I set are empty, and put a no-op plugin in.
2. Call new LazyResult(...) myself to skip the warning.

I don’t like either of these. The first is hacky and introduces an (small) unnecessary performance cost. The second one depends on the implementation of Processor#process() in a way that I feel is brittle.

Any thoughts?

[ai]

What about:

if (plugins.length > 0) {
  return postcss(plugins).process(css).root
} else {
  return postcss.parse(css)
}

Of course, you will need to change algorithm a little.

[aoberoi]

Great! It’s a little more code, but I think this should be more efficient too. Not a problem.

Thank you so much.