shadcn-ui/ui codebase analysis: How does shadcn-ui CLI work? — Part 1

export async function runInit(cwd: string, config: Config) {
  const spinner = ora(\`Initializing project...\`)?.start()

  // Ensure all resolved paths directories exist.
  for (const \[key, resolvedPath\] of Object.entries(config.resolvedPaths)) {
    // Determine if the path is a file or directory.
    // TODO: is there a better way to do this?
    let dirname = path.extname(resolvedPath)
      ? path.dirname(resolvedPath)
      : resolvedPath

    // If the utils alias is set to something like "@/lib/utils",
    // assume this is a file and remove the "utils" file name.
    // TODO: In future releases we should add support for individual utils.
    if (key === "utils" && resolvedPath.endsWith("/utils")) {
      // Remove /utils at the end.
      dirname = dirname.replace(/\\/utils$/, "")
    }

    if (!existsSync(dirname)) {
      await fs.mkdir(dirname, { recursive: true })
    }
  }

  const extension = config.tsx ? "ts" : "js"

  const tailwindConfigExtension = path.extname(
    config.resolvedPaths.tailwindConfig
  )

  let tailwindConfigTemplate: string
  if (tailwindConfigExtension === ".ts") {
    tailwindConfigTemplate = config.tailwind.cssVariables
      ? templates.TAILWIND\_CONFIG\_TS\_WITH\_VARIABLES
      : templates.TAILWIND\_CONFIG\_TS
  } else {
    tailwindConfigTemplate = config.tailwind.cssVariables
      ? templates.TAILWIND\_CONFIG\_WITH\_VARIABLES
      : templates.TAILWIND\_CONFIG
  }

  // Write tailwind config.
  await fs.writeFile(
    config.resolvedPaths.tailwindConfig,
    template(tailwindConfigTemplate)({
      extension,
      prefix: config.tailwind.prefix,
    }),
    "utf8"
  )

  // Write css file.
  const baseColor = await getRegistryBaseColor(config.tailwind.baseColor)
  if (baseColor) {
    await fs.writeFile(
      config.resolvedPaths.tailwindCss,
      config.tailwind.cssVariables
        ? config.tailwind.prefix
          ? applyPrefixesCss(baseColor.cssVarsTemplate, config.tailwind.prefix)
          : baseColor.cssVarsTemplate
        : baseColor.inlineColorsTemplate,
      "utf8"
    )
  }

  // Write cn file.
  await fs.writeFile(
    \`${config.resolvedPaths.utils}.${extension}\`,
    extension === "ts" ? templates.UTILS : templates.UTILS\_JS,
    "utf8"
  )

  spinner?.succeed()

  // Install dependencies.
  const dependenciesSpinner = ora(\`Installing dependencies...\`)?.start()
  const packageManager = await getPackageManager(cwd)

  // TODO: add support for other icon libraries.
  const deps = \[
    ...PROJECT\_DEPENDENCIES,
    config.style === "new-york" ? "@radix-ui/react-icons" : "lucide-react",
  \]

  await execa(
    packageManager,
    \[packageManager === "npm" ? "install" : "add", ...deps\],
    {
      cwd,
    }
  )
  dependenciesSpinner?.succeed()
}

// Ensure all resolved paths directories exist.
  for (const \[key, resolvedPath\] of Object.entries(config.resolvedPaths)) {
    // Determine if the path is a file or directory.
    // TODO: is there a better way to do this?
    let dirname = path.extname(resolvedPath)
      ? path.dirname(resolvedPath)
      : resolvedPath

    // If the utils alias is set to something like "@/lib/utils",
    // assume this is a file and remove the "utils" file name.
    // TODO: In future releases we should add support for individual utils.
    if (key === "utils" && resolvedPath.endsWith("/utils")) {
      // Remove /utils at the end.
      dirname = dirname.replace(/\\/utils$/, "")
    }

    if (!existsSync(dirname)) {
      await fs.mkdir(dirname, { recursive: true })
    }
  }

// Determine if the path is a file or directory.
// TODO: is there a better way to do this?
let dirname = path.extname(resolvedPath)
  ? path.dirname(resolvedPath)
  : resolvedPath

// If the utils alias is set to something like "@/lib/utils",
// assume this is a file and remove the "utils" file name.
// TODO: In future releases we should add support for individual utils.
if (key === "utils" && resolvedPath.endsWith("/utils")) {
  // Remove /utils at the end.
  dirname = dirname.replace(/\\/utils$/, "")
}

if (!existsSync(dirname)) {
  await fs.mkdir(dirname, { recursive: true })
}