Ionic serve not working with ionic2 - ionic-framework

Question

I have started a clean project with ionic2 based on tabs template, by following the next steps:
$ ionic start <myapp> --v2
$ cd <myapp>
$ ionic serve
Then the output from ionic serve is just:
> ionic-hello-world# ionic:serve /home/luan/<myapp>
> ionic-app-scripts serve "--v2" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"
If I try to open localhost:8100 there's no response.
The files and code of the project are just the same as one using tabs template, but it's just don't wonking.
Could someone help?
UPDATE:
My ionic info
My system information:
Cordova CLI: 6.5.0
Ionic Framework Version: 2.3.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.2.2
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Linux 4.4
Node Version: v6.10.0
Xcode version: Not installed

Answer 1

Have you tried using
npm run ionic:serve

Answer 2

I have found the answer. It turns out, the 1.2.2 version of Ionic App Scripts (app-scripts) version was the problem. Just downgraded to 1.1.4 and works fine. The actual workaround:
in package.json, change
"#ionic/app-scripts": "1.2.2"
to
"#ionic/app-scripts": "1.1.4"
then run npm install again. It should show something like this:
[...]
- sentence-case#2.1.1 node_modules/sentence-case
- change-case#3.0.1 node_modules/change-case
ionic-hello-world# /home/luan/Projetos/prestacontas
└── #ionic/app-scripts#1.1.4 ## The problem was here
Make shure that #ionic/app-scripts is now 1.1.4, and not 1.2.2.
And that's it.

Answer 3

Here is a solution for you,,, :)
Most probably this can be an issue of updating. Because I opened two of my ionic projects. one is from late 2017. For that project live reload is working without an issue. The problem with my new project. I checked the "ionic info" and found that both are same other than the ionic framework version. my older one is v 3.7.1. unfortunately, that version not installing now. don't know exactly what the problem is.
However, I found a solution,
instead of "Ionic serve" command run the following command for the first time. then you will not need to run "ionic serve" each time.
npm run ionic:serve

Answer 4

I had the same error when I updated Ionic. I worked around it by using:
ionic serve --address localhost
The above solution to use "#ionic/app-script": "1.2.2" works to have it use localhost instead of 0.0.0.0. However it created other errors that were easily fixed by following the addition warnings.
"devDependencies": {
"#ionic/app-scripts": "1.2.2",
The one new error I still couldn't pinpoint yet is:
Error Close Runtime Error timeStamp.getDate is not a function Stack
TypeError: timeStamp.getDate is not a function
at HomePage.timeSince (http://localhost:8100/build/main.js:70141:33)
at SafeSubscriber._next (http://localhost:8100/build/main.js:70088:42)
at SafeSubscriber.__tryOrUnsub (http://localhost:8100/build/main.js:69844:16)
at SafeSubscriber.next (http://localhost:8100/build/main.js:69793:22)
at Subscriber._next (http://localhost:8100/build/main.js:69746:26)
at Subscriber.next (http://localhost:8100/build/main.js:69710:18)
at XMLHttpRequest.onLoad (http://localhost:8100/build/main.js:44518:38)
at t.invokeTask (http://localhost:8100/build/polyfills.js:3:14051)
at Object.onInvokeTask (http://localhost:8100/build/main.js:27788:37)
at t.invokeTask (http://localhost:8100/build/polyfills.js:3:13987) Ionic Framework: 2.0.0-rc.2 Ionic Native: 2.2.3 Ionic App Scripts:
1.2.2 Angular Core: 2.1.1 Angular Compiler CLI: 2.1.1 Node: 6.9.1 OS Platform: Windows 10 Navigator Platform: Win32 User Agent: Mozilla/5.0
(Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/56.0.2924.87 Safari/537.36
The app does run but that window popped up on Chrome and I had to close it before I could see the output of the app.