ts-lambda-local-dev/src/example/index.ts

typescript lambda local development server

import { Context } from 'aws-lambda';
import { LocalLambda, LocalLambdaConfig } from '../local.lambda';
import { LambdaResponse, RequestEvent } from '../types';

// handler is a function that takes in an event and context and returns a response
const handler = async (req: RequestEvent, context: Context): Promise<LambdaResponse> => ({ statusCode: 200, body: `Hello World !!! My userId is ${req.pathParameters?.id}\n My JWT is ${JSON.stringify(req.requestContext.authorizer.lambda.jwt)}.` });

// context is provided as optional field in config.
const config: LocalLambdaConfig = {
  handler, // if type is not compatible, do `handler: handler as any`
  port: 8000, // optional, default to 8000
  requestContext: {
    authorizer: {
      lambda: {
        jwt : {
          claims: {
            sub: '1234567890',
            name: 'John Doe',
            iat: 1516239022,
          },
          scopes: ['read', 'write'],
        },
      },
    },
  },
  pathParamsPattern: '/user/:id', // optional, default to '/'
};

// visit http://localhost:8000/user/1234567890 to see the response
const localLambda = new LocalLambda(config);
localLambda.run();