Reduce the AWS lambda node function size

Question

I have used serverless-webpack npm module to reduce the size of my nodeJs serverless application but apparently the size is gtting increased from 15M to 85MB with usage of this packag and i am unable to deploy to lambda.

Do we have any other ways to reduce the size of node lambda function to ignore sending node_modules and improve the speed of th lambda function.

That module is supposed to bundle things so you don't need `node_modules` at all – how have you configured it? How are you deploying to Lambda? — AKX, Mar 21 '22 at 12:23
85MB is really big amount of code, so I suspect you have some binaries included in the package. Do you? — Artem Arkhipov, Mar 21 '22 at 12:27
@ArtemArkhipov there are no binaries involved in the application — user14856694, Mar 22 '22 at 10:10

score 0 · Answer 1 · answered Mar 21 '22 at 12:26

I'd recommend you to use esbuild-loader for webpack, as it is more effective and provides really good tree-shaking (bundling only code which is really used by your application rather than bundling everything).

As an alternative, you may use the corresponding serverless plugin, but since you already have webpack configured it may be more convenient to use the first option.

Reduce the AWS lambda node function size

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