Typescript Lambda API Gateway Example

How to deploy

1. Create the AWS Lambda Node 14.x function.
2. Check your terminal AWS_PROFILE enviroment variable. The script uses aws cli to deploy (ensure that you have)
3. Check Lambda ARN in package.json configs

4. npm run deploy

npm run

Local test and cloudwatch log (for remote test helper)

• test: local test (change payload event in src/test.ts)
• log: realtime tail cloudwatch log

Clear, Validate and Build (a bundle /dist/index)

• clear: rm deploy.zip dist/ deploy/
• validate: typescript validate
• build: npm run clear && ts-node src/esbuild (ESBuild create bundled file /dits/index.js)

Zip and deploy

• zip: npm run build && ./scripts/zip.sh
• deploy: npm run zip && ./scripts/deploy.sh $npm_package_config_lambda

index.handle

import {Request as ApigRequest} from "@serverless-tools/aws/apigateway/Request";

export const handler = async ( event: APIGatewayProxyEvent ): Promise<APIGatewayProxyResult> =>
{
	const req = new ApigRequest(event);
	const json = {} as IJsonRetorno;

	try
	{
		switch (req.method())
		{
			case "POST":
				json.data = await _POST(req);
				break;
				
			case "GET":
				json.data = await _GET(req);
				break;

			default:
				json.erro = "Bad request (method)";
				return req.responseCreate(json, 400)
		}
	}
	catch(e:any)
	{
		req.logErro(e, req);
		json.erro = e;
		return req.responseCreate(json, 500);
	}

	return req.responseCreate(json); // CORS * enable by default
};

async function _POST(req: ApigRequest) 
{
	const payload = req.body(); // parsed object from body string
	const user = req.cognitoAuthorizer()?.user(); // returns CognitoUser object

	return await req.cognitoAuthorizer()?.email(); // Email (id token cames with request, access token has to go through cognito api to get user)
}

async function _GET(req: ApigRequest) 
{
	return req.queryString();
}

Check @serverless-tools/aws