Nav link modified. session thing updated for loggedIn users!

employeemanagement/src/App.js

 import React from 'react';
 import SignIn from './components/auth/SignIn'
 import Dashboard from './components/dashboard/Dashboard'
-import { BrowserRouter } from 'react-router-dom';
+import { BrowserRouter, Switch, Route } from 'react-router-dom';
 
 function App() {
   return (
     <BrowserRouter>
       <div className="App">
-        <SignIn />
+          <Switch>
+            <Route exact path='/' component={Dashboard} />
+            <Route path='/signin' component={SignIn} />
+          </Switch>
       </div>
     </BrowserRouter>
   );

employeemanagement/src/components/auth/SignIn.js

@@ -21,7 +21,8 @@ class Signin extends Component {
         this.props.signIn(this.state);
     }
     render(){
-        const { authError } = this.props;
+        const { authError, auth } = this.props;
+        if( auth.uid ) return <Redirect to='/' />
         return(
             <div className="Login">
                <div className="login-wrap">
@@ -49,9 +50,9 @@ class Signin extends Component {
 }
 
 const mapStateToProps = (state) => {
-    //console.log(state.authError);
     return {
         authError: state.authError,
+        auth: state.firebase.auth
     }
 }