Think same document view transitions are supported everywhere? Think again. Some older browser versions only support the Level 1 API, or not even that. Bramus's library lets you code against the Level 2 API regardless of native support,... ...much like the Bag's mayStartViewTransition():
vtbag.devThe Utensil DrawerA growing collection of lightweight utilities to help you craft polished view transitions.
Introducing `view-transitions-mock`: A non-visual Polyfill for Same-Document View Transitions brm.us/view-transit... It is a spec-compliant JavaScript implementation of Same-Document View Transitions that polyfills the entire JavaScript API surface but that doesn’t do the animation bits.
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