Add TypeScript definition (linkExactActiveClass) to RouterOptions (#1471)

* Add TypeScript definition (`linkExactActiveClass`) to RouterOptions

* Add test for RouterOptions (`linkExactActiveClass`)

Author: aicest

test/e2e/specs/active-links.js

@@ -43,9 +43,11 @@ module.exports = {
       })
       exactActiveA.forEach(i => {
         browser.assert.cssClassPresent(`li:nth-child(${i}) a`, 'router-link-exact-active')
+          .assert.cssClassPresent(`li:nth-child(${i}) a`, 'router-link-active')
       })
       exactActiveLI && exactActiveLI.forEach(i => {
         browser.assert.cssClassPresent(`li:nth-child(${i})`, 'router-link-exact-active')
+          .assert.cssClassPresent(`li:nth-child(${i})`, 'router-link-active')
       })
     }
   }

types/router.d.ts

@@ -49,6 +49,7 @@ export interface RouterOptions {
   mode?: RouterMode;
   base?: string;
   linkActiveClass?: string;
+  linkExactActiveClass?: string;
   parseQuery?: (query: string) => Object;
   stringifyQuery?: (query: Object) => string;
   scrollBehavior?: (

types/test/index.ts

@@ -41,6 +41,7 @@ const router = new VueRouter({
   mode: "history",
   base: "/",
   linkActiveClass: "active",
+  linkExactActiveClass: "exact-active",
   scrollBehavior: (to, from, savedPosition) => {
     if (from.path === "/") {
       return { selector: "#app" };