run() — tailwindcss Function Reference

Source Code

packages/@tailwindcss-upgrade/src/index.ts lines 43–360

async function run() {
  let base = process.cwd()

  eprintln(header())
  eprintln()

  let cleanup: (() => void)[] = []

  if (!flags['--force']) {
    // Require a clean git directory
    if (isRepoDirty()) {
      error('Git directory is not clean. Please stash or commit your changes before migrating.')
      info(
        `You may use the ${highlight('--force')} flag to silence this warning and perform the migration.`,
      )
      process.exit(1)
    }
  }

  info(`Upgrading from Tailwind CSS ${highlight(`v${version.installedTailwindVersion(base)}`)}`, {
    prefix: '↳ ',
  })

  if (version.installedTailwindVersion(base) !== version.expectedTailwindVersion(base)) {
    let pkgManager = await pkg(base).manager()

    error(
      [
        'Version mismatch',
        '',
        pc.dim('```diff'),
        `${pc.red('-')} ${`${pc.dim('"tailwindcss":')} ${`${pc.dim('"')}${pc.blue(version.expectedTailwindVersion(base))}${pc.dim('"')}`}`} (expected version in ${highlight('package.json')})`,
        `${pc.green('+')} ${`${pc.dim('"tailwindcss":')} ${`${pc.dim('"')}${pc.blue(version.installedTailwindVersion(base))}${pc.dim('"')}`}`} (installed version in ${highlight('node_modules')})`,
        pc.dim('```'),
        '',
        `Make sure to run ${highlight(`${pkgManager} install`)} and try again.`,
      ].join('\n'),
      {
        prefix: '↳ ',
      },
    )
    process.exit(1)
  }

  {
    // Stylesheet migrations

    // Use provided files
    let files = flags._.map((file) => path.resolve(base, file))

    // Discover CSS files in case no files were provided
    if (files.length === 0) {
      info('Searching for CSS files in the current directory and its subdirectories…')

      files = await globby(['**/*.css'], {
        absolute: true,
        gitignore: true,
        // gitignore: true will first search for all .gitignore including node_modules folders, this makes the initial search much faster
        ignore: ['**/node_modules/**'],
      })
    }

    // Ensure we are only dealing with CSS files
    files = files.filter((file) => file.endsWith('.css'))

    // Analyze the stylesheets
    let loadResults = await Promise.allSettled(files.map((filepath) => Stylesheet.load(filepath)))

    // Load and parse all stylesheets
    for (let result of loadResults) {
      if (result.status === 'rejected') {
        error(`${result.reason?.message ?? result.reason}`, { prefix: '↳ ' })
      }
    }

    let stylesheets = loadResults
      .filter((result) => result.status === 'fulfilled')
      .map((result) => result.value)
    let originals = new Map(stylesheets.map((sheet) => [sheet, sheet.root.toString()]))

    // Analyze the stylesheets