javascript - How to pass an async callback into postcss walkDecls?

Question

I'm trying to update background urls in css with postcss, but in some cases I need to download images for them that I will encode.

However, when I pass an async function to walkDecls it doesn't update the values.

Example:

  const myFunction = () => new Promise(resolve => setTimeout(resolve('hello'), 3000));

  root.walkDecls(async dec => {
    if (dec.prop.match(/background/) && dec.value.match(/url/)) {
      dec.value = await myFunction();
    }
  });

Is there a way to make this work?

question from:https://stackoverflow.com/questions/65870980/how-to-pass-an-async-callback-into-postcss-walkdecls

Answer 1

Waitting for answers