the project structure is as follows:

import sign from "common/utils/sign";

console.log(sign("hello"));

webpack.config.js configure alias

resolve: {
    alias: {
        common: "../common"
    }
}

error when starting app project:

ERROR in [at-loader] ../common/utils/sign:1:1 
    TS2307: Cannot find module "md5".

if the alias configured below is not under the current project, how to configure node_modules.
if I install dependencies in the common project, webpack will repeat the files in common/node_modules when packaging.
what should I do with this situation?