Signal
A signal stores a value.
Computed
A computed value is a value that is created from other values.
Effect
An effect runs code and automatically tracks the signals or computed values it reads.
Watch
A watcher reacts to one specific signal or computed value.
Batch
Batching groups multiple state updates into one update cycle.
Peek
Sometimes you want to read a value without making the current reaction depend on it.
Scope
Scopes help clean up multiple things at once.