add ignore list

[abrin]

it's probably infeasible to limit to pass in the webpack config and have the tool ignore things that are already ignored in the webpack config considering how many tools may build on the webpack config like The Vue-CLI which uses The vue.config.js which dynamically builds one. Thus, would it be feasible to add an ignore list or regexp that allows for the ignoring of node modules that might already be reflected in the webpack config?