fhammerschmidt / reason_monorepo

Experimenting with monorepo ideas

To use

• yarn
• yarn build
• yarn watch (requires watchexec)
• open index.html (no server required)

My ideal ReScript monorepo

The goal is to run a single bsb from the project root and have everything Just Work (tm).

This repository leverages ReScript pinned packages support. The setup:

• yarn workspace-based monorepo (this ensures there are no secondary node_modules folders in the packages which might confuse bsb)
• packages are listed under bs-dependencies and pinned-dependencies, which works because the yarn workspace creates symlinks to each source package in node_modules
• yarn build compiles and bundles

As of 8.4.2-dev.1 this is considered ready for use. However do note that interface modifications, no matter how small, will still trigger a forest of rebuilds. For example changing ExampleStyles.re in b is a contained rebuild as expected, but changing ExampleStyles.rei causes a complete rebuild of package c even though c only uses the Examples module from b, not ExampleStyles.

In a perfect scenario bsb would track dependencies at a more granular level, to rebuild based on interface contents rather than simple file timestamps, as it does when the same structure is modelled as a flat namespace with a single bsconfig.json.

Source

Heavily modified from the ReasonReact Template.