Feature request: Export PowertoolsLogFormatter from /logger

[Myroslav341]

Use case

When creating a custom log formatter, the only way to keep the default baseAttributes shape is to copy the formatting code from PowertoolsLogFormatter.

If PowertoolsLogFormatter is exported on the package level, custom log formatters can inherit from it if needed.

Solution/User Experience

import { LogFormatter, PowertoolsLogFormatter } from '@aws-lambda-powertools/logger'

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

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[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 @Myroslav341, thank you for opening the issue.

Before categorizing the request I'd like to better understand the use case.

In which case you'd want to extend the PowertoolsLogFormatter instead of the LogFormatter class?

The PowertoolsLogFormatter is purposefully note exported because we export the parent class (LogFormatter) for those who want to customize how logs are formatted.

If we exported PowertoolsLogFormatter and you were to extend it, you'd have to format the attributes twice because the formatAttribute method returns an instance of LogItem rather than a plain object.