This is a sample project to show how to integrate TypeScript, Jest, Localstack, Serverless Framework, and CircleCI together to achieve a relatively seamless AWS lambda development workflow locally.

• TypeScript: To write the code more fluently.
• Webpack: To bundle third-party libraries and transpile TypeScript to JavaScript for Node.js 10.X support.
• ESLint + Prettier: To check and format code for avoiding careless mistakes.

• Jest: To write, run test code and collect results.
• Localstack: To emulate AWS services i.e. S3, IAM, CloudFront locally.
• Docker: To provide an environment with Localstack prepared.
• Serverless: To deploy code onto Localstack.
• CircleCI: To perform online CI.

• Babel is not introduced since tools such as ts-node and ts-jest have already covered many features of Babel.
• The deployment to staging or production environment is not covered in this sample project. People can consider Terraform or AWS CDK for such purpose.

Apache License 2.0