Create an AWS Lambda using Typescript

AWS Lambda does not natively support TypeScript. In this article, you are going to learn how to create a Typescript Lambda.

TypeScript is a superset of JavaScript, meaning all valid JavaScript code is also valid TypeScript code. As the name says Type+Script, adds optional static typing to the language.

TypeScript saves you time catching errors and providing fixes before you run code, which makes this a great framework to write your lambda function.

So you write code in TypeScript and then it’s converted in Node.js.

A Node.js lambda has better spin-up times than C# or Java.

Let's go for what really matters, write the lambda using Typescript.

Requirements

• SAM CLI
• Docker
• Node
• Visual studio code

Project setup

• Open Visual Studio Code;
• View, Command Palette;
• Type “aws: Create new SAM Application”;
• Select the language (nodejs12.x);

Select AWS lambda language

• AWS Sam Hello World;
• Type a name for your project and that's it (mine is lambda)