Description

SST only watches for functions that are located in one of the subfolders of an SST project. As consequence, it makes it hard to be integrated into an already existing monorepo.

For instance, SST does not allow for hot reloading in a project that has this structure:

.
├── deployment/                 <-- The SST project
    ├── stacks/
    │   ...
    └── sst.config.ts
└── functions/                  <-- The folder with the lambda projects
    ├── lambda1/
    │   ├── index.ts
    │   └── package.json
    ├── lambda2/
    │   ├── index.ts
    │   └── package.json

Reproduction

1. Run the cmds below

$ cd /tmp
$ npm init sst
$ mv my-sst-app/packages packages
$ (cd packages/core ; npm i)
$ (cd packages/functions ; npm i)
$ cd my-sst-app ; npm install ; npm run dev

1. Replace "./packages/functions/src/lambda.handler" by "../packages/functions/src/lambda.handler" at my-sst-app/stacks/MyStack.ts:6
2. Edit the functions code (e.g. add console.log('hello') inside /tmp/packages/functions/src/lambda.ts) and observe the results. Only the first run will be correct, while no subsequent invocations will have the code updated.

Notes

• I have tried it out on SST versions 2.1.12, and 2.1.4
• I tried symlinking the functions folder inside the SST project, but it didn’t help