* Add unit tests

* Fix attribute merging priority order & mutation

* Update packages/logger/tests/unit/Logger.test.ts

Co-authored-by: Andrea Amorosi <[email protected]>

* Update packages/logger/tests/unit/Logger.test.ts

Co-authored-by: Andrea Amorosi <[email protected]>

* Update packages/logger/tests/unit/Logger.test.ts

Co-authored-by: Sara Gerion <[email protected]>

Co-authored-by: Andrea Amorosi <[email protected]>
Co-authored-by: Sara Gerion <[email protected]>

* doc(all): Clarify selecting REGION for e2 tests

* build(logger): add e2e tests

The tests spin up actual infrastructure on AWS, invoke Lambda function, verify that the logs are printed correctly, and destroy the stack afterward.

* chore(logger): remove unused code and dependencies

* chore(logger): add note about flaky case that not some logs are missing

* chore(logger): remove unused code

* chore(logger): fix eslint formatting in e2e tests and return request id from function

* chore(logger): fix typescript errors when running e2e tests

* Update CONTRIBUTING.md

Co-authored-by: Florian Chazal <[email protected]>

* Make doc use the same request id as in doc + Remove unrelevant comment

Co-authored-by: Florian Chazal <[email protected]>

* chore: bump mkdocs + add annotation plugins

* docs: updated year in copyright notice

* chore: remove redundant ignore

* chore(logger): make E2E works for all runtimes

* chore(logger): use generateUniqueName function

* chore(logger): Increase e2e stack creation timeout to 300 seconds

* chore(logger): Test using Github Action matrix strategy to pass env var to e2e tests

* chore(logger): Fix e2e test with strategy matrix

* Revert "chore(logger): Fix e2e test with strategy matrix"

This reverts commit 85a67ab.

* Revert "chore(logger): Test using Github Action matrix strategy to pass env var to e2e tests"

This reverts commit f11140c.

* feat: added Utility common class w/ cold start heuristic + tests

* feat: exported new Utility class

* chore: (housekeeping) added missing jest group comments to LambdaInterface tests

* Update packages/commons/src/Utility.ts

Co-authored-by: ijemmy <[email protected]>

* Update packages/commons/src/Utility.ts

Co-authored-by: ijemmy <[email protected]>

Co-authored-by: ijemmy <[email protected]>

* chore(all): use eu-west-1 as a region for testing (both unit and e2e)

This is to avoid confusion as E2E now runs in both region (logger use eu-central-1 while others use eu-west-1).
It will throw an error if contributors did not cdk bootstrap both region properly.
In addition, the `tests/resources/contexts/hello-world.ts` file is shared among utilities so we should keep the region consistent

* chore(all): replace eu-central-1 with eu-west-1 in tracer and metrics packages

* chore(doc): replace eu-central-1 with eu-west-1 in doc

* chore(logger): remove .only