Test

fix: avoid mutations so lib can be used in a Svelte `$derived()` #101

Job	Run time
Check types	15s
Unit tests	33s
Declutter code (Knip)	16s
Lint code (oxlint)	18s
Report bundle analysis (codecov)	22s
Audit packages	10s
Lint package (publint)	17s
	2m 11s

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