@tanstack/vue-router/dist/source/ClientOnly.jsx

Modern and scalable routing for Vue applications

import * as Vue from 'vue';
/**
 * Render the children only after the JS has loaded client-side. Use an optional
 * fallback component if the JS is not yet loaded.
 *
 * @example
 * Render a Chart component if JS loads, renders a simple FakeChart
 * component server-side or if there is no JS. The FakeChart can have only the
 * UI without the behavior or be a loading spinner or skeleton.
 *
 * ```tsx
 * return (
 *   <ClientOnly fallback={<FakeChart />}>
 *     <Chart />
 *   </ClientOnly>
 * )
 * ```
 */
export const ClientOnly = Vue.defineComponent({
    name: 'ClientOnly',
    props: {
        fallback: {
            type: Object,
            default: null,
        },
    },
    setup(props, { slots }) {
        const hydrated = useHydrated();
        return () => {
            if (hydrated.value) {
                return slots.default?.();
            }
            return props.fallback ?? null;
        };
    },
});
/**
 * Return a boolean indicating if the JS has been hydrated already.
 * When doing Server-Side Rendering, the result will always be false.
 * When doing Client-Side Rendering, the result will always be false on the
 * first render and true from then on. Even if a new component renders it will
 * always start with true.
 *
 * @example
 * ```tsx
 * // Disable a button that needs JS to work.
 * const hydrated = useHydrated()
 * return (
 *   <button type="button" disabled={!hydrated.value} onClick={doSomethingCustom}>
 *     Click me
 *   </button>
 * )
 * ```
 * @returns True if the JS has been hydrated already, false otherwise.
 */
export function useHydrated() {
    const hydrated = Vue.ref(false);
    Vue.onMounted(() => {
        hydrated.value = true;
    });
    return hydrated;
}
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