Intercept link clicks for client-side routing

src/client/router.ts

@@ -14,6 +14,7 @@ export function initRouter(render: () => void) {
   document.addEventListener('click', e => {
     const a = (e.target as Element).closest('a')
     if (!a || !a.href || a.origin !== location.origin || a.target === '_blank') return
+    if (e.metaKey || e.ctrlKey || e.shiftKey || e.altKey) return
     e.preventDefault()
     history.pushState(null, '', a.href)
     route()