fix: syntax

Author: hunterliu1003

packages/vue-final-modal/src/components/ModalsContainer.vue

@@ -22,7 +22,7 @@ onBeforeUnmount(() => {
       v-for="(modal, index) in vfm.dynamicModals"
       :key="modal.id"
       v-bind="{
-        displayDirective: modal.keepAlive ? 'show' : undefined,
+        displayDirective: modal?.keepAlive ? 'show' : undefined,
         ...modal.attrs,
       }"
       v-model="modal.modelValue"

packages/vue-final-modal/src/plugin.ts

@@ -94,7 +94,7 @@ function createInternalVfm(vfm: Vfm) {
     },
     resolvedClosed(index: number) {
       dynamicModals[index]?.resolveClosed?.()
-      if (!dynamicModals[index].keepAlive)
+      if (!dynamicModals[index]?.keepAlive)
         dynamicModals.splice(index, 1)
     },
     resolvedOpened(index: number) {

packages/vue-final-modal/src/useApi.ts

@@ -79,7 +79,7 @@ export function useModal<P = InstanceType<typeof VueFinalModal>['$props']>(_opti
     ...withMarkRaw<P>(_options),
   }) as UseModalOptions<P> & UseModalOptionsPrivate
   tryOnUnmounted(() => {
-    if (!options.keepAlive)
+    if (!options?.keepAlive)
       destroy()
   })
 
@@ -114,8 +114,8 @@ export function useModal<P = InstanceType<typeof VueFinalModal>['$props']>(_opti
 
     if (_options.defaultModelValue !== undefined)
       options.defaultModelValue = _options.defaultModelValue
-    if (_options.keepAlive !== undefined)
-      options.keepAlive = _options.keepAlive
+    if (_options?.keepAlive !== undefined)
+      options.keepAlive = _options?.keepAlive
     if (_options.context)
       options.context = _options.context