overflow-guard

Use when building or refactoring plain HTML, CSS, or custom-element based UI whose layout should adapt when rendered content stops fitting available space. Helps apply fallbackClass-driven compact states, listen for overflowchange, use check-only for axis-specific behavior, and refresh the measurement copy after programmatic DOM changes.

Use when building or refactoring responsive React components whose layout should adapt when content stops fitting available space, especially when item count, label length, translations, optional actions, or loaded data are dynamic. Helps choose between OverflowGuard fallback mode and render-prop mode, handle horizontal vs vertical overflow, and wire nested consumers with useOverflowGuard.