mergeProps

Compose DOM props for Svelte — class concatenation and on* handler chaining.

Import from base-ui-svelte/merge-props (also on the root barrel). Merges class (not className) and composes on* handlers. See Differences.

import { mergeProps } from 'base-ui-svelte/merge-props';

const props = mergeProps({ class: 'btn', onclick: onA }, { class: 'btn-primary', onclick: onB });
// class → "btn btn-primary"; both onclick handlers run

Upstream: Base UI mergeProps.