chore: move mixins

src-next/mixins/popup/context.ts

@@ -0,0 +1,16 @@
+import { OverlayConfig } from './overlay';
+
+export type StackItem = {
+  vm: any;
+  overlay: any;
+  config: OverlayConfig;
+};
+
+export const context = {
+  zIndex: 2000,
+  lockCount: 0,
+  stack: [] as StackItem[],
+  find(vm: any): StackItem | undefined {
+    return this.stack.filter((item) => item.vm === vm)[0];
+  },
+};