Feature Suggestion: "Exclude" option

[gmhenderson]

Hello. Thank you for the very useful plugin. In my case, however, I needed the ability to exclude certain selectors from receiving the prefix. I modified the code a bit and added an exclude option, which should be an array of RegExp's against which to test the selectors, before prepending anything:

...

var selectorExcluded = function (regexp) {
  return regexp.test(selector)
}

if (selector.startsWith(opts.selector.trim()) || opts.exclude.some(selectorExcluded)) {
  return selector
}

return opts.selector + selector

...

which could be used like:

require('postcss-prepend-selector')({ selector: '.my-stuff ', exclude: [/#content-wrapper/] })

It seems to be working, so I thought I'd share the idea in case you're interested in incorporating into the plugin.

[ledniy]

@gmhenderson Thanks for suggesting, I will try to get into it on weekends, or maybe you want to create PR with that change and test cases of it?

[christianmagill]

This definitely seems super useful. I'd love to see it incorporated.

[dannyuk1982]

I know this is old, but to save anyone else who comes across this time, this plugin does the same job and has an exclude function https://github.com/RadValentin/postcss-prefix-selector

usage, i.e.

plugins: [require("postcss-prefix-selector")({ prefix: "#app ", exclude: ['html', 'body'] })]