Swap out yarn for pnpm

[daniel-heppner-ibigroup]

Yarn 1 has been unsupported for a while, with the last update 3 years ago. The biggest problem with running such an old version is that we are missing out on the more ergonomic ways of referencing internal dependencies.

Instead of needing to stay on top of internal dependency versions, we can now just reference workspace:* as our version number for any internal dependency.

[miles-grant-ibigroup]

Can we have it auto-prepublish again? Also can we make sure that published packages refer to actual package versions and not the workspace things

[daniel-heppner-ibigroup]

From the docs:
"Before publish, aliases are converted to regular aliased dependencies. The above example will become: "bar": "npm:[email protected]"."
https://pnpm.io/workspaces

[daniel-heppner-ibigroup]

prepublish now runs after install automatically. Since internal dependencies are symlinked instead of downloaded from npm, this is necessary for things to work properly. I think both of your comments are now addressed.

[daniel-heppner-ibigroup]

It looks like the SVGs are changing in the snapshots because the version of styled icons changed.

I'm seeing slight visual differences on them but nothing substantial and not related to the build system.

[miles-grant-ibigroup]

Things are looking much better. Is there any way we can update the yarn prepublish to add a warning about using pnpm instead?

[miles-grant-ibigroup]

Do we still need update-internal-dependencies.js?

[miles-grant-ibigroup]

Quite a few missing reference changes in here, especially around workspace package version management

[miles-grant-ibigroup]

Seeing this error when trying to import in otp-rr: error Couldn't find any versions for "@opentripplanner/map-popup" that matches "workspace:*"\n +`

pnpm build is not working?