postcss.config.js

// postcss.config.js
const autoprefixer = require('autoprefixer');
const tailwindcss = require('tailwindcss');
const postcssPurgecss = require(`@fullhuman/postcss-purgecss`);

const purgecss = postcssPurgecss({
  // Specify the paths to all of the template files in your project.
    content: [
      './public/**/*.html',
      './src/**/*.vue',
    ],
    // Include any special characters you're using in this regular expression.
    // See: https://tailwindcss.com/docs/controlling-file-size/#understanding-the-regex
  defaultExtractor: content => content.match(/[\w-/.:]+(?<!:)/g) || [],
    // Whitelist auto generated classes for transitions and router links.
    // From: https://github.com/ky-is/vue-cli-plugin-tailwind
    whitelistPatterns: [/-(leave|enter|appear)(|-(to|from|active))$/, /^(?!(|.*?:)cursor-move).+-move$/, /^router-link(|-exact)-active$/],
  });

module.exports = {
  plugins: [
    tailwindcss,
    autoprefixer,
    ...process.env.NODE_ENV === 'production'
      ? [purgecss]
      : []
  ],
};