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perpil/handler.mjs

Last active November 12, 2024 16:54
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Get node lambda runtime build date at run time
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handler.mjs
import { statSync } from "fs";
let runtimeBuildDate;
try {
runtimeBuildDate = statSync("/var/runtime").mtime;
} catch (e) {
console.error("Unable to determine runtime build date", e);
}
export const handler = async (event) => {
const response = {
statusCode: 200,
body: JSON.stringify({runtimeBuildDate, nodeVersion:process.version}),
};
return response;
};
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perpil commented Nov 12, 2024 •
edited
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Snippet from my CDK NodeJsFunction to replace the environment variable process.env.sdkVersion with current AWS SDK version at build time using esbuild define:

define: {
          "process.env.sdkVersion": JSON.stringify(
            JSON.parse(
              readFileSync(
                "node_modules/@aws-sdk/client-sts/package.json"
              ).toString()
            ).version
          )
        }

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