This package is inlined into Global & Browser ESM builds of user-facing renderers (e.g. @vue/runtime-dom), but also published as a package that can be used standalone. The standalone build should not be used alongside a pre-bundled build of a user-facing renderer, as they will have different internal storage for reactivity connections. A user-facing renderer should re-export all APIs from this package.

Credits

The implementation of this module is inspired by the following prior art in the JavaScript ecosystem:

Caveats

Built-in objects are not observed except for Map, WeakMap, Set and WeakSet.