Improve code reloading with unbundled JS functions in multiple files

[mjm]

- Do you want to request a feature or report a bug?

Feature (maybe a bug depending on currently intended behavior)

- What is the current behavior?

netlify dev with unbundled functions does not seem to reload code for local require()'d Node modules, but it would be nice if it did! 😄

I'm not sure, but I think it reloads the main .js file with the handler export, but if you factor out code into separate files, then you lose the reloading behavior and have to restart netlify dev to see your changes. Especially for Gatsby sites (which take a while to process), this really slows down development compared to using webpack with netlify-lambda.

- Please mention your node.js, and operating system version.

Node 11.13.0, macOS 10.14.4

[swyxio]

agreed. you’re right about our file watch strategy. pr welcome, and/or we will do this once we hire someone fulltime