refactor($core): catch initial push to avoid warning (#2629)

Author: posva

Diff for: packages/@vuepress/core/lib/client/serverEntry.js

@@ -9,7 +9,8 @@ export default context => new Promise((resolve, reject) => {
       return reject({ url: fullPath })
     }
 
-    router.push(url)
-    router.onReady(() => resolve(app))
+    // error handled in onReady
+    router.push(url).catch(() => {})
+    router.onReady(() => resolve(app), reject)
   })
 })

Diff for: packages/@vuepress/core/package.json

@@ -51,7 +51,7 @@
     "url-loader": "^1.0.1",
     "vue": "^2.6.10",
     "vue-loader": "^15.7.1",
-    "vue-router": "^3.1.3",
+    "vue-router": "^3.4.5",
     "vue-server-renderer": "^2.6.10",
     "vue-template-compiler": "^2.6.10",
     "vuepress-html-webpack-plugin": "^3.2.0",

Diff for: yarn.lock

@@ -13715,10 +13715,10 @@ vue-loader@^15.7.1:
     vue-hot-reload-api "^2.3.0"
     vue-style-loader "^4.1.0"
 
-vue-router@^3.1.3:
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-3.1.3.tgz#e6b14fabc0c0ee9fda0e2cbbda74b350e28e412b"
-  integrity sha512-8iSa4mGNXBjyuSZFCCO4fiKfvzqk+mhL0lnKuGcQtO1eoj8nq3CmbEG8FwK5QqoqwDgsjsf1GDuisDX4cdb/aQ==
+vue-router@^3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-3.4.5.tgz#d396ec037b35931bdd1e9b7edd86f9788dc15175"
+  integrity sha512-ioRY5QyDpXM9TDjOX6hX79gtaMXSVDDzSlbIlyAmbHNteIL81WIVB2e+jbzV23vzxtoV0krdS2XHm+GxFg+Nxg==
 
 vue-server-renderer@^2.6.10:
   version "2.6.10"