Custom email template fails to compile

[mmmewk]

I followed the documentation here: https://github.com/aws-samples/amazon-cognito-passwordless-auth/blob/main/CUSTOMIZE-AUTH.md to setup custom email templates and ran into an error

SyntaxError: Cannot use import statement outside a module.

This was fixed by adding:

import * as lambdaNodeJs from "aws-cdk-lib/aws-lambda-nodejs";

createAuthChallenge: {
  entry: "functions/src/passwordless/createAuthChallenge.ts",
  bundling: {
    format: lambdaNodeJs.OutputFormat.ESM,
    banner: "import{createRequire}from 'module';const require=createRequire(import.meta.url);",
  },
},

Looks like it needs ESM to use the import syntax.

[ottokruse]

You're right, we do set it to ESM in the lib, but if you override the bundling property, you should add it again as you did.

Thanks for reporting. You're probably not the first one to run into this!

Want to send a PR to add it to the code example in the docs?

[sparksoftltd]

I'm having the same issue and @mmmewk 's solution works fine, thanks!