chushihua

node_modules/vue-router/src/util/state-key.js

@@ -0,0 +1,22 @@
+/* @flow */
+import { inBrowser } from './dom'
+
+// use User Timing api (if present) for more accurate key precision
+const Time =
+  inBrowser && window.performance && window.performance.now
+    ? window.performance
+    : Date
+
+export function genStateKey (): string {
+  return Time.now().toFixed(3)
+}
+
+let _key: string = genStateKey()
+
+export function getStateKey () {
+  return _key
+}
+
+export function setStateKey (key: string) {
+  return (_key = key)
+}