gitlab-foss/scripts/frontend/tailwindcss.mjs

/* eslint-disable import/extensions */
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { createProcessor } from 'tailwindcss/lib/cli/build/plugin.js';

// Note, in node > 21.2 we could replace the below with import.meta.dirname
const ROOT_PATH = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../');

export async function build({
  shouldWatch = false,
  tailWindAllTheWay = Boolean(process.env.TAILWIND_ALL_THE_WAY),
} = {}) {
  let config = path.join(ROOT_PATH, 'config/tailwind.config.js');
  let fileName = 'tailwind.css';
  if (tailWindAllTheWay) {
    config = path.join(ROOT_PATH, 'config/tailwind.all_the_way.config.js');
    fileName = 'tailwind_all_the_way.css';
  }

  const processor = await createProcessor(
    {
      '--watch': shouldWatch,
      '--output': path.join(ROOT_PATH, 'app/assets/builds', fileName),
      '--input': path.join(ROOT_PATH, 'app/assets/stylesheets', fileName),
    },
    config,
  );

  if (shouldWatch) {
    return processor.watch();
  }
  if (!process.env.REDIRECT_TO_STDOUT) {
    return processor.build();
  }
  // tailwind directly prints to stderr,
  // which we want to prevent in our static-analysis script
  const origError = console.error;
  console.error = console.log;
  await processor.build();
  console.error = origError;
  return null;
}

function wasScriptCalledDirectly() {
  return process.argv[1] === fileURLToPath(import.meta.url);
}

export function viteTailwindCompilerPlugin({ shouldWatch = true }) {
  return {
    name: 'gitlab-tailwind-compiler',
    async configureServer() {
      build({ shouldWatch });
    },
  };
}

export function webpackTailwindCompilerPlugin({ shouldWatch = true }) {
  return {
    async start() {
      build({ shouldWatch });
    },
  };
}

if (wasScriptCalledDirectly()) {
  build();
}