Is it possible to transpile the lib?

[nbusser]

Hi,

I'm using a mac M1 and I want to build the lib for a linux system (AWS lambda).

When I install the package on my computer, I have the following file-tree:

When running the lambda on AWS, I have the following error message:

I conclude that npm build script builded a specific version for my architecture.
Is it then possible to transpile the lib for another architecture ?

[nbusser]

As a workaround, I used this lambda layer, which contains the lib properly compiled for AWS lambda execution environment.

[ShivamJoker]

@nbusser since it uses the binary which is compiled, you will have to use the layers or copy the node modules.
You need to ignore the lib while compiling.

[nbusser]

@ShivamJoker I added the lib in my builder's (esbuild) externals.
I registered your layer in my serverless function and everything seems to work correctly!

[ShivamJoker]

That's great. I think you can close the issue now, since there is no other way to use it.

[nbusser]

Don't you think it is possible to somehow transpile the library to produce a linux build?

I'm thinking of using some shady npm arguments or stuff.

[ShivamJoker]

You can't compile a compiled binary.

Ideally npm packages contain mostly js and CSS which the transpiler understands.

At the end the library is just executing the binary when you call the API via js.

[nbusser]

Ok I now understand what you mean, makes sense!

However, there should be one different binary for each architecture.
Then, is there a way to tell npm to install ("setup") the js lib to use the linux x86 binary instead of the binary tailored for my specific system?

[ShivamJoker]

I think there are some flags which you can use, but the best way to get it is by installing it in a system where you'll be running eg. Amazon linux 2.

[Brooooooklyn]

@nbusser see npm/rfcs#519 (comment)

yarn 1.x can use --ignore-platform flag to download ignore all conditions.
yarn 2+ can use supportedArchitectures to download specified platforms dependencies.
pnpm can use --force flag to download ignore all conditions.

[juaoose]

Hijacking this since I defaulted to the layer. In "theory", something like npm install --no-save --arch=x86 --platform=linux ... would work if done from CI? Or am I not understanding?

Thanks for the lib :)