docs: fix vue example

examples/nuxt-example/components/ui/toast/use-toast.ts

@@ -0,0 +1,165 @@
+import { computed, ref } from 'vue'
+import type { Component, VNode } from 'vue'
+import type { ToastProps } from '.'
+
+const TOAST_LIMIT = 1
+const TOAST_REMOVE_DELAY = 1000000
+
+export type StringOrVNode =
+  | string
+  | VNode
+  | (() => VNode)
+
+type ToasterToast = ToastProps & {
+  id: string
+  title?: string
+  description?: StringOrVNode
+  action?: Component
+}
+
+const actionTypes = {
+  ADD_TOAST: 'ADD_TOAST',
+  UPDATE_TOAST: 'UPDATE_TOAST',
+  DISMISS_TOAST: 'DISMISS_TOAST',
+  REMOVE_TOAST: 'REMOVE_TOAST',
+} as const
+
+let count = 0
+
+function genId() {
+  count = (count + 1) % Number.MAX_VALUE
+  return count.toString()
+}
+
+type ActionType = typeof actionTypes
+
+type Action =
+  | {
+    type: ActionType['ADD_TOAST']
+    toast: ToasterToast
+  }
+  | {
+    type: ActionType['UPDATE_TOAST']
+    toast: Partial<ToasterToast>
+  }
+  | {
+    type: ActionType['DISMISS_TOAST']
+    toastId?: ToasterToast['id']
+  }
+  | {
+    type: ActionType['REMOVE_TOAST']
+    toastId?: ToasterToast['id']
+  }
+
+interface State {
+  toasts: ToasterToast[]
+}
+
+const toastTimeouts = new Map<string, ReturnType<typeof setTimeout>>()
+
+function addToRemoveQueue(toastId: string) {
+  if (toastTimeouts.has(toastId))
+    return
+
+  const timeout = setTimeout(() => {
+    toastTimeouts.delete(toastId)
+    dispatch({
+      type: actionTypes.REMOVE_TOAST,
+      toastId,
+    })
+  }, TOAST_REMOVE_DELAY)
+
+  toastTimeouts.set(toastId, timeout)
+}
+
+const state = ref<State>({
+  toasts: [],
+})
+
+function dispatch(action: Action) {
+  switch (action.type) {
+    case actionTypes.ADD_TOAST:
+      state.value.toasts = [action.toast, ...state.value.toasts].slice(0, TOAST_LIMIT)
+      break
+
+    case actionTypes.UPDATE_TOAST:
+      state.value.toasts = state.value.toasts.map(t =>
+        t.id === action.toast.id ? { ...t, ...action.toast } : t,
+      )
+      break
+
+    case actionTypes.DISMISS_TOAST: {
+      const { toastId } = action
+
+      if (toastId) {
+        addToRemoveQueue(toastId)
+      }
+      else {
+        state.value.toasts.forEach((toast) => {
+          addToRemoveQueue(toast.id)
+        })
+      }
+
+      state.value.toasts = state.value.toasts.map(t =>
+        t.id === toastId || toastId === undefined
+          ? {
+              ...t,
+              open: false,
+            }
+          : t,
+      )
+      break
+    }
+
+    case actionTypes.REMOVE_TOAST:
+      if (action.toastId === undefined)
+        state.value.toasts = []
+      else
+        state.value.toasts = state.value.toasts.filter(t => t.id !== action.toastId)
+
+      break
+  }
+}
+
+function useToast() {
+  return {
+    toasts: computed(() => state.value.toasts),
+    toast,
+    dismiss: (toastId?: string) => dispatch({ type: actionTypes.DISMISS_TOAST, toastId }),
+  }
+}
+
+type Toast = Omit<ToasterToast, 'id'>
+
+function toast(props: Toast) {
+  const id = genId()
+
+  const update = (props: ToasterToast) =>
+    dispatch({
+      type: actionTypes.UPDATE_TOAST,
+      toast: { ...props, id },
+    })
+
+  const dismiss = () => dispatch({ type: actionTypes.DISMISS_TOAST, toastId: id })
+
+  dispatch({
+    type: actionTypes.ADD_TOAST,
+    toast: {
+      ...props,
+      id,
+      open: true,
+      onOpenChange: (open: boolean) => {
+        if (!open)
+          dismiss()
+      },
+    },
+  })
+
+  return {
+    id,
+    dismiss,
+    update,
+  }
+}
+
+export { toast, useToast }