Does anyone here use a Yarn Workspaces + TypeScript monorepo Serverless Stack #help

Does anyone here use a Yarn Workspaces + TypeScrip...

Sean Matheson

11/19/2021, 7:30 AM

Does anyone here use a Yarn Workspaces + TypeScript monorepo setup? I am trying to utilise a shared package within my monorepo, consuming it within my lambdas, but upon executing I get an error saying that imported module does not exist. I was trying to import native TS files in the hope that they would be transpiled and bundled into the output for each lambda.

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|-- backend
|   |- lambdas
|   |  |- foo.ts (contains: import { isNullOrEmpty } from '@my/lib/strings';)
|   |- package.json
|- lib
    |- strings.ts
    |- package.json (name: "@my/lib")

I am guessing it is looking for a

strings.js

file rather than a

strings.ts

file.

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Error: Cannot find module '@my/lib/strings'

Sean Matheson

11/19/2021, 7:40 AM

Any way to tinker with the underlying esbuild config to allow for the transpilation of the shared monorepo package?

Sean Matheson

11/19/2021, 8:31 AM

🤞

Sean Matheson

11/19/2021, 8:34 AM

I guess an alternative approach would be to have a single package.json and tsconfig.json at the root and then utilise TS path aliases.

Sean Matheson

11/19/2021, 8:34 AM

But I like how much cleaner and scoped the dependencies are in my initial approach.

Sean Matheson

11/19/2021, 9:28 AM

Aha, I figured it out. I had set the srcPath for my functions to be the

backend

folder. I changed it to the root of the project. This seems to have increased the scope, allowing ESBuild to do it's magic. Lovely.

Frank

11/19/2021, 9:39 PM

Hey @Sean Matheson, glad you figured it out!

Frank

11/19/2021, 9:40 PM

@thdxr created this TypeScript monorepo starter, maybe you can see if the setup fits ur usecase https://github.com/serverless-stack/serverless-stack/tree/master/examples/typescript-monorepo

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