Feature request: Warn users when adding multiple values to dimension before flushing

[allenheltondev]

Use case

In reference to this post, when a user adds multiple values to a single dimension before flushing metrics, only the last value set on the dimension wins.

Solution/User Experience

It would be nice if the metrics object would do a console.warn when multiple distinct values are used on a single dimension before flushing. Current behavior uses the last value added to the dimension.

Alternative solutions

Acknowledgment

• This feature 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.

[boring-cyborg]

Thanks for opening your first issue here! We'll come back to you as soon as we can.
In the meantime, check out the #typescript channel on our Powertools for AWS Lambda Discord: Invite link

[dreamorosi]

Hi @allenheltondev, nice to see you here!

I agree with the discussion you and @leandrodamascena had in the linked thread, we should emit a warning when this happens.

I have opened a PR to introduce the change, once merge it'll be included in the next release.