serverless - node.js crypto package is not working

Question

Trying to generate RSA keys with crypto package and deploy it on AWS Lambda, I get an error that crypto package is undefined. Are there easy ways to deploy this package to Lambda without having building docker containers?

Yes, I read that node.js native packages have different binaries on mac (my current os) and linux, so there is an approach to build docker and deploy it, but I found it's not very clear for me, so if this is the only way to do it, maybe there are good resources to read about it also.

Thanks!

Answer 1

You need to import the package as require("crypto"). It is just not defined on the global object.

const handler = () => {
  console.log(crypto); // undefined
  console.log(global.crypto); // undefined
  console.log(require("crypto"); // Bingo! :D
}

---

If you arrived here because you are bundling a Nodejs lambda with rollup and using a version of uuid 7+, then you need to add

external: ["crypto"]

to your rollup.config.js so that rollup does not attempt to replace the require statement by whatever if finds better.