lesspass/sandbox/lesspass-web-component/postcss.config.js

const purgecss = require("@fullhuman/postcss-purgecss")({
  content: [
    "./src/**/*.jsx",
    "./src/**/*.tsx",
    "./src/**/*.js",
    "./src/**/*.ts",
    "./public/index.html",
  ],
  defaultExtractor: (content) => {
    const broadMatches = content.match(/[^<>"'`\s]*[^<>"'`\s:]/g) || [];
    const innerMatches = content.match(/[^<>"'`\s.()]*[^<>"'`\s.():]/g) || [];
    return broadMatches.concat(innerMatches);
  },
});

module.exports = {
  plugins: [
    require("postcss-import"),
    require("tailwindcss"),
    require("autoprefixer"),
    ...(process.env.NODE_ENV === "production"
      ? [purgecss, require("postcss-discard-comments")({ removeAll: true })]
      : []),
  ],
};