修改d.ts中的类名,并添加全局方法的d.ts定义

types/modal.d.ts

@@ -2,7 +2,7 @@
 // Project: https://github.com/iview/iview
 // Definitions by: yangdan
 // Definitions: https://github.com/yangdan8/iview.git
-import Vue, { VNode } from "vue";
+import Vue, { VNode } from 'vue';
 
 export declare class Modal {
   /**
@@ -208,7 +208,7 @@ export declare class ModalConfig {
   onCancel?: () => void;
 }
 
-declare module "vue/types/vue" {
+declare module 'vue/types/vue' {
   interface Vue {
     /**
      * 对话框