chore: add type for splitepanes package (#38)

Author: starknt

components/MainPlayground.vue

@@ -4,7 +4,6 @@ So that we can discuss about the directions and plans, to avoid wasted efforts.
 -->
 
 <script setup lang="ts">
-// @ts-expect-error missing type
 import { Pane, Splitpanes } from 'splitpanes'
 
 const ui = useUiState()

splitpanes.d.ts

@@ -0,0 +1,21 @@
+// TODO install @types/splitpanes once updated
+declare module 'splitpanes' {
+  import type { Component } from 'vue'
+
+  export interface SplitpaneProps {
+    horizontal: boolean
+    pushOtherPanes: boolean
+    dblClickSplitter: boolean
+    firstSplitter: boolean
+  }
+
+  export interface PaneProps {
+    size: number | string
+    minSize: number | string
+    maxSize: number | string
+  }
+
+  export type Pane = Component<PaneProps>
+  export const Pane: Pane
+  export const Splitpanes: Component<SplitpaneProps>
+}