Todd's Notes

Updating

Periodically, it will be wise to update the package versions specified in the package.json file. Do this by creating a local sam project from this cookie cutter using the sam init command below, and then manually updating the versions using

npm uninstall yada
npm install --save-dev yada

etc...

Generating sample events

sam local generate-event apigateway aws-proxy | pbcopy

to see supported events

sam local generate-event -h

Adding additional lambda functions

The following files must be modified to add additional lambda functions.

template.yml

SecondFunction:
  Type: AWS::Serverless::Function
  Metadata:
    BuildMethod: makefile
  Properties:
    Handler: dist/handlers/second.secondHandler
    Description: A second function built on top of the same infrastructure.
    Events:
      Api:
        Type: Api
        Properties:
          Path: /second
          Method: GET

src/handlers/second.ts

export const secondHandler = async ( ... ) { ... }

Makefile

build-SecondFunction:
	$(MAKE) HANDLER=src/handlers/second.ts build-lambda-common

Template for AWS SAM using TypeScript and shared layers

This is a Cookiecutter template to create a Serverless application based on Serverless Application Model (SAM) on Node.js 14 runtime using TypeScript for Lambda functions source code and shared layers for runtime dependencies.

Resulted application will be close to this example app: aws-sam-typescript-layers-example

Usage

Install AWS SAM CLI and run following command:

sam init --location gh:Envek/cookiecutter-aws-sam-typescript-layers

You'll be prompted a few questions to help this template to scaffold this project and after its completion you should see a new folder at your current path with the name of the project you gave as input.

License

This project is licensed under the terms of the MIT license.