一直報這個錯

One CLI for webpack must be installed. These are recommended choices, delivered as separate packages:

?- webpack-cli (https://github.com/webpack/webpack-cli)

? ?The original webpack full-featured CLI.

?- webpack-command (https://github.com/webpack-contrib/webpack-command)

? ?A lightweight, opinionated webpack CLI.

We will use "npm" to install the CLI via "npm install -D".

Which one do you like to install (webpack-cli/webpack-command):

已做過的測試npm install ?webpack-cli -g 但沒用? 想知道怎么回事