I am using csspurge using the config file. I have css written as lg\:right-40 and in js it is referred as lg:right-40. in js backslash is escaped hence purgecss is not able identify all the that contain \

cssfile

.lg\:right-40 {
    right: 10rem;
}
.lg\:right-44 {
    right: 11rem;
}
.lg\:right-48 {
    right: 12rem;
}
.lg\:right-52 {
    right: 13rem;
}
.lg\:right-56 {
    right: 14rem;
}

purgecss.config.js

   const TailwindExtractor = (content) => {
  // Treat every word in the bundle as a CSS selector
  return content.match(/[\w-/\\:]+(?<!:)/g) || []
}
    new PurgeCSS().purge({
      content: ['./src/**/*.jsx', './src/**/*.js'],
      css: ['./src/login/tailwind_backup.css'],
      safelist:{
        greedy:[/\\/]
      },
      extractors: [{
        extractor: TailwindExtractor,
        extensions: ['js', 'jsx'],
      }],
      output: './src/login/tailwind.css'
    })

I want to match css classes with \ with js classes without \