Is compiling to JavaScript necessary for a CDK TypeScript project?

While working on my sample App using the CDK, I encountered some questions. I made changes to the stack.ts file in my project, and then ran cdk synth and cdk deploy. Surprisingly, it appears that compiling to JavaScript was not necessary for my project.

Upon inspecting the cdk.json file, I found the following command:

"app": "npx ts-node --prefer-ts-exts bin/cdk.ts"

It seems that cdk.ts serves as the endpoint for my stack, and there doesn't seem to be any issues even if I only work in TypeScript.

Is compiling to JavaScript really unnecessary for CDK development? Are there any potential problems with this approach? If I have misunderstood any crucial concepts, could you please clarify? Thank you!

Answer №1

Here is an example utilizing ts-node:

ts-node serves as a TypeScript execution engine and REPL for Node.js.

By JIT transforming TypeScript into JavaScript, it allows you to run TypeScript directly on Node.js without the need for precompilation.

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