How to use postcss-url plugin?

[xingyibiao]

I want to use postcss-url plugin. but not work for me. It`s my config,

scss({
      processor: css => postcss([px2rem({ remUnit: 75, remPrecision: 5 }), url({ url: 'copy', assetsPath: './assets' })]),
      output: 'dist/bundle.css',
    }),

[xingyibiao]

It seams like this plugin always set postcss from is undefinded. and I want to write a postcss plugin to copy file, but not work

[thgh]

Have you tried to set from? What could this plugin do better?

    scss({
      processor: css => postcss([px2rem({ remUnit: 75, remPrecision: 5 }), url({ url: 'copy', assetsPath: './assets' })]),
      output: 'dist/bundle.css',
      from: "somefile"
    }),