Passing --env to webpack serve

[Eli-Black-Work]

• Operating System: Windows 10
• Node Version: 12.16.3
• NPM Version: 6.14.4
• webpack Version: 5.1.3
• webpack-dev-server Version: 3.11.0
• Browser: n/a

• This is a bug
• This is a modification request

For Features; What is the motivation and/or use-case for the feature?

Now that webpack-dev-server must be invoked via webpack serve, it would be nice if webpack serve accepted --env flags, like webpack-dev-server used to. @mybrainishuge mentioned this in #2759 (comment), and I think it's worth discussing.

As he said:

How are environment options passed to webpack serve when exporting a function in the webpack config? With webpack-dev-server, I passed environment variables:

webpack-dev-server --env.mode development

Passing the same argument to webpack serve errors:

[webpack-cli] Unknown argument: --env.mode
[webpack-cli] Unknown argument: development

I'm not seeing how to pass anything other than booleans to webpack serve, but I want to pass strings:

webpack serve --env mode

[snitin315]

@Bosch-Eli-Black you can do webpack serve --env mode=development, for more info you can see webpack/webpack-cli#1939

[alexander-akait]

Answer above, plus it is out of scope webpack-dev-server

[Eli-Black-Work]

That worked. Thanks, @snitin315 ! 🙂