Function update_pre_prop

packages/svelte/src/internal/client/reactivity/props.js:43–47

(fn, d = 1)

 * @returns {number}
 */
export function update_pre_prop(fn, d = 1) {
	const value = fn() + d;
	fn(value);
	return value;
}

/**
 * The proxy handler for rest props (i.e. `const { x, ...rest } = $props()`).