Added createRcMemo primitive

[clinuxrulz]

createRcMemo is similar to createLazyMemo except its lifetime is bounded by the existence of listeners. (the listeners are reference counted.)

• Initially when there are no listeners, the internal memo is not created.
• When it goes from 0 listeners, to some listeners the internal memo is constructed.
• When it goes from some listeners, to zero listeners the internal memo is deconstructed.
• The internal memo can be reconstructed again after it has been deconstructed.
• For the context being passed along, it will carry the context of the owner of which createRcMemo was called inside.

[changeset-bot]

🦋 Changeset detected

Latest commit: 0ebdd1a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@solid-primitives/memo	Minor
@solid-primitives/date	Patch
@solid-primitives/deep	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[atk]

There is no documentation in the README.md, and this also needs a changeset file (please run npx changeset and add a minor version). Lastly, add createRcMemo to package.json in the primitive.list array.

[atk]

Please add that the prev argument to the memo will be based on the previous value after being without listeners and being re-initialized, even if intermediate computations would have led to a different value. Maybe consider providing an additional stale argument (or similar mechanism) to the handler.

[atk]

Please use type-safe comparisons unless you consciously want to match other types, e.g. in line 485.

[clinuxrulz]

@atk I believe I have address your requested changes.
Except for npx changeset, that command did not make any file changes on my machine, so I am a little confused.

Maybe you can try the npx changeset command on your end?

Regarding prev to clear things up. When an internal memo is disposed later on, and reconstructed again later later on, the prev value will not reset to the initial value provided to createRcMemo, it will instead carry on the last-seen prev value. If it seems unclear in the documentation still, I can try and clear it up.

I've used that createRcMemo pattern a lot in production code at work. I believe it's a handy one to have available.

[clinuxrulz]

@atk changeset added. Apologies for before, I did not understand how the npx changeset worked.