Add runtime validation to the options of our integrations

[barak007]

Proposal Description

Add runtime check for the validity of options for our integrations.

Additional Context

Example:
When you upgrade stylable from 3 to 4, and don't change the options for our webpack plugin you get silent fail.

[Cxxshyy]

can i get a little guidance on how this could be implemented for example the files that could handle this etc

[idoros]

First of all thank you for taking an interest in Stylable.

There are several integrations that can use this validation. The CLI tools (stc, stc-format, stc-codmod) already have this functionality through yargs strict.

The integrations that can use this are @stylable/webpack-plugin and @stylable/rollup-plugin.
Both projects can be validated in their plugin constructor:

• webpack constructor
• rollup constructor

And both projects have similar tests, where you setup a fixture folder and spec to check it (for rollup: fixtures and specs)