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*Problem:*
`Could not include required dependency '@aws-sdk/client-cognito-identity-provider'`
This causes `new CognitoIdentityProviderClient()`  to be undefined (see screenshot from lambda)

*Situation:*
I am defining a lambda function with `new aws.lambda.CallbackFunction()`. Within that I am using a module from the `@aws-sdk/client-cognito-identity-provider`. I expect this function to build and include dependecies used that I defined in the `callback`. This does not happen. Instead I get a warning (see Problem).

*Question*
What do I have to do so that dependencies are included?

figured out that `sam build`  (AWS SAM) is not enough. That's why I went with a custom esbuild build config, to build my lambdas properly.

Simple example:
`./scripts/build.js`
```require('esbuild').build({
  entryPoints: ['./src/sign-up'],
  bundle: true,
  minify: true,
  platform: 'node',
  target: 'node16.16.0',
  outfile: './build/sign-up/index.js',
  format: 'cjs',

}).catch(() =&gt; process.exit(1)) ```