Webpack WARNING: Module not found: Error: Can't resolve...

[imduchy]

I'm getting the following warnings when using webpack in an npm monorepo setup. While I'm getting the warnings, the application (node/express) seems to be built successfully and works. I'm wondering if this is something I should be concerned about and if it's safe to suppress the warnings.

I'm using mongoose 6.1.4

packages
  models
    package.json (has mongoose in peerDependencies)
apps
  api
    package.json (has packages/models and mongoose in dependencies)
package.json

I'm running build from the apps/api workspace.

WARNING in ../../node_modules/express/lib/view.js 81:13-25
Critical dependency: the request of a dependency is an expression
 @ ../../node_modules/express/lib/application.js 22:11-28
 @ ../../node_modules/express/lib/express.js 18:12-36
 @ ../../node_modules/express/index.js 11:0-41
 @ ./index.ts 27:29-47

WARNING in ../../node_modules/mongodb/lib/core/auth/mongodb_aws.js 13:9-24
Module not found: Error: Can't resolve 'aws4' in '/Users/jakubduchon/Source/tipovacka/node_modules/mongodb/lib/core/auth'
 @ ../../node_modules/mongodb/lib/core/auth/defaultAuthProviders.js 9:19-43
 @ ../../node_modules/mongodb/lib/core/index.js 51:24-83
 @ ../../node_modules/mongodb/index.js 4:13-34
 @ ../../node_modules/connect-mongo/src/index.js 3:20-38
 @ ../../node_modules/connect-mongo/index.js 1:0-33
 @ ./index.ts 26:38-62

WARNING in ../../node_modules/mongodb/lib/core/connection/utils.js 6:53-60
Critical dependency: require function is used in a way in which dependencies cannot be statically extracted
 @ ../../node_modules/mongodb/lib/encrypter.js 3:13-60
 @ ../../node_modules/mongodb/lib/mongo_client.js 201:30-52
 @ ../../node_modules/mongodb/index.js 8:16-53 25:22-51
 @ ../../node_modules/connect-mongo/src/index.js 3:20-38
 @ ../../node_modules/connect-mongo/index.js 1:0-33
 @ ./index.ts 26:38-62

WARNING in ../../node_modules/mongodb/lib/core/index.js 4:53-60
Critical dependency: require function is used in a way in which dependencies cannot be statically extracted
 @ ../../node_modules/mongodb/index.js 4:13-34
 @ ../../node_modules/connect-mongo/src/index.js 3:20-38
 @ ../../node_modules/connect-mongo/index.js 1:0-33
 @ ./index.ts 26:38-62

WARNING in ../../node_modules/mongodb/lib/core/utils.js 4:52-59
Critical dependency: require function is used in a way in which dependencies cannot be statically extracted
 @ ../../node_modules/mongodb/lib/bulk/common.js 16:23-62
 @ ../../node_modules/mongodb/index.js 17:30-73
 @ ../../node_modules/connect-mongo/src/index.js 3:20-38
 @ ../../node_modules/connect-mongo/index.js 1:0-33
 @ ./index.ts 26:38-62

WARNING in ../../node_modules/mongoose/node_modules/mongodb/lib/bson.js 8:11-30
Module not found: Error: Can't resolve 'bson-ext' in '/Users/jakubduchon/Source/tipovacka/node_modules/mongoose/node_modules/mongodb/lib'
 @ ../../node_modules/mongoose/node_modules/mongodb/lib/index.js 31:13-30
 @ ../../node_modules/mongoose/lib/index.js 1113:27-45
 @ ../../node_modules/mongoose/index.js 9:0-34
 @ ./index.ts 29:33-52

WARNING in ../../node_modules/mongoose/node_modules/mongodb/lib/deps.js 25:4-42
Module not found: Error: Can't resolve 'kerberos' in '/Users/jakubduchon/Source/tipovacka/node_modules/mongoose/node_modules/mongodb/lib'
 @ ../../node_modules/mongoose/node_modules/mongodb/lib/index.js 91:13-30
 @ ../../node_modules/mongoose/lib/index.js 1113:27-45
 @ ../../node_modules/mongoose/index.js 9:0-34
 @ ./index.ts 29:33-52

WARNING in ../../node_modules/mongoose/node_modules/mongodb/lib/deps.js 31:4-38
Module not found: Error: Can't resolve 'snappy' in '/Users/jakubduchon/Source/tipovacka/node_modules/mongoose/node_modules/mongodb/lib'
 @ ../../node_modules/mongoose/node_modules/mongodb/lib/index.js 91:13-30
 @ ../../node_modules/mongoose/lib/index.js 1113:27-45
 @ ../../node_modules/mongoose/index.js 9:0-34
 @ ./index.ts 29:33-52

WARNING in ../../node_modules/mongoose/node_modules/mongodb/lib/deps.js 33:79-109
Module not found: Error: Can't resolve 'snappy/package.json' in '/Users/jakubduchon/Source/tipovacka/node_modules/mongoose/node_modules/mongodb/lib'
 @ ../../node_modules/mongoose/node_modules/mongodb/lib/index.js 91:13-30
 @ ../../node_modules/mongoose/lib/index.js 1113:27-45
 @ ../../node_modules/mongoose/index.js 9:0-34
 @ ./index.ts 29:33-52

WARNING in ../../node_modules/mongoose/node_modules/mongodb/lib/deps.js 48:4-34
Module not found: Error: Can't resolve 'aws4' in '/Users/jakubduchon/Source/tipovacka/node_modules/mongoose/node_modules/mongodb/lib'
 @ ../../node_modules/mongoose/node_modules/mongodb/lib/index.js 91:13-30
 @ ../../node_modules/mongoose/lib/index.js 1113:27-45
 @ ../../node_modules/mongoose/index.js 9:0-34
 @ ./index.ts 29:33-52

10 warnings have detailed information that is not shown.
Use 'stats.errorDetails: true' resp. '--stats-error-details' to show it.

webpack 5.65.0 compiled with 10 warnings in 30281 ms

[vkarpov15]

Nothing to worry about unless you use Kerberos auth, AWS auth, or snappy compression with Mongoose. And if you haven't noticed any issues, odds are you aren't :) See #7476