TypeScript Serverless Boilerplate

A TypeScript boilerplate designed for AWS Lambda via Serverless framework

Description

The boilerplate comes with 2 functions that can be used as an example. One for GET request and another one for POST request. The latter incorporates Middy as a middleware to validate the request body

Setup

Make sure you have NodeJS 14 or later installed along with npm or yarn. And follow below steps to get started.

You also need serverless command to be available which could be accomplished using below command

# With yarn
yarn global add serverless
# With npm
npm install -g serverless

Then perform the below steps to spin up the local development environment

1. Copy the .env_example into .env file for managing environment variables for local development or create one your own
2. Run yarn or npm install to install dependencies
3. Run the command yarn start:dev to start the local development server (via serverless-offline plugin)

Packages & Dependencies

Tool	Library	Version
IoC Container	Inversify	5.1.1+
Environment Management	serverless-dotenv-plugin	3.9.0+
Middleware	Middy	2.4.3+
Local Development	serverless-offline	7.0.0+
Test Runner	Jest	27.0.6+
Code Bundler	Webpack	5.44.0+
Linter	EsLint	7.30.0+

Project Structure

The project code is primarily stored in the src folder except some of the setup files e.g. Jest config, Webpack config, EsLine config, etc.

The Lambda handlers are in the interfaces/handlers directory along with middlewares and other utils

The overall project structure is shown below

├── src
│   ├── services
│   ├── data
│   ├── interfaces
│   │   ├── handlers
│   │   ├── middlewares
│   │   └── utils
│   ├── configuration.ts
│   ├── inversify.config.ts
│   └── types.ts
├── jest.config.js
├── jest.setup.ts
├── package.json
├── serverless.yml
├── tsconfig.json
├── webpack.config.js