lambda_local_runner/shared/README.md

shared/

Cross-function Python modules — the local equivalent of an AWS Lambda Layer.

Anything in this directory is available to every function under functions/<name>/handler.py as a regular import:

# functions/sign_pdfs/handler.py
from shared import common_utils

The shared/ directory is added to sys.path by the runner. For an AWS deploy, you'd either:

1. Package it as a real Lambda Layer (preferred), and reference the layer ARN from each function's deploy spec, or
2. Vendor a copy into each function's deployment zip (simpler, less DRY).

Currently empty — no cross-function code yet. First candidate would probably be a structured-logging helper once multiple functions need it.