Maintenance: remove `lerna` from repository

[dreamorosi]

Summary

Since the very early days of this of this repository we have used lerna to orchestrate commands across the workspaces of this monorepo.

Since then the ecosystem has evolved and we've been able to offload most of the tasks that lerna does to npm workspaces, except two:

• lerna version
• lerna publish

Since the version of lerna that we are using is dependent on vulnerable dependencies, and upgrading it has proven challenging in the past, we're going to instead invest efforts in finally migrating off it.

Why is this needed?

Lerna is a dependency-heavy package, it brings in 554 dependencies, some of which completely useless for what we need it for.

By investing this initial effort in replacing it with more focused alternatives or by npm workspaces (aka no dependencies) we'll reduce the dependency tree surface and decrease maintenance overhead in the long term.

Which area does this relate to?

Automation

Solution

No response

Acknowledgment

• This request meets Powertools for AWS Lambda (TypeScript) Tenets
• Should this be considered in other Powertools for AWS Lambda languages? i.e. Python, Java, and .NET

Future readers

Please react with 👍 and your use case to help us understand customer demand.

[sdangol]

@dreamorosi We also have a couple of scripts which are using lerna exec, specifically, test:parallel and test:e2e:parallel

[dreamorosi]

Feel free to remove them, we literally never used them.