Question 214257 in Javascript Question posted in
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Javascript – What is the purpose of –use-npm in create-next-app?

When creating an NextJS app using the CLI, one can choose --use-npm when running npx create-next-app. When running it without arguments (ie in interactive mode) it doesn’t ask about this.

The help page says

  --use-npm
 
    Explicitly tell the CLI to bootstrap the app using npm

and if I use it, then it changes tsconfig.json to

    "paths": {
      "--use-npm": ["./src/*"]
    }

instead of

    "paths": {
      "@/*": ["./src/*"]
    }

Question

What is the purpose of --use-npm?

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2

Answers


  1. Chosen as BEST ANSWER
    0

    I have found the problem and solution.

    The command I ran was

    npx create-next-app --typescript --tailwind --app --src-dir --import-alias --use-npm --no-eslint

    which should have been

    npx create-next-app --typescript --tailwind --app --src-dir --import-alias '@/*' --use-npm --no-eslint

    For some reason create-next-app doesn't have --no-import-alias which would have been very useful.


  2. 0

    create-next-app has this line in the source code to determine whether to use npm, pnpm or yarn based on the provided flags:

    const packageManager = !!program.useNpm
  ? 'npm'
  : !!program.usePnpm
  ? 'pnpm'
  : !!program.useYarn
  ? 'yarn'
  : getPkgManager()

    If you don’t use an explicit flag then the getPkgManager function looks to see if "yarn" or "pnpm" exists in the npm_config_user_agent environment variable and defaults to npm otherwise. (source)

    So interactive mode is just defaulting to npm.

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