Cannot GET //__ion-dev-server/ionic_lab.html in ionic 2.1.8

Question

I have updated my local setup such as-

• ionic
• cordova
• npm
  See the system environment available on my machine-

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Your system information:

Cordova CLI: 6.4.0 
Ionic Framework Version: 2.0.0-rc.2
Ionic CLI Version: 2.1.8
Ionic App Lib Version: 2.1.4
Ionic App Scripts Version: 0.0.43
ios-deploy version: Not installed
ios-sim version: 5.0.8 
OS: OS X Yosemite
Node Version: v6.2.2
Xcode version: Xcode 7.2 Build version 7C68



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after that I run the server by typing-

ionic start

It works but display only one view on browser instead of three (android, ios & windows).
When I use different command to get that all as-

ionic serve --lab (or) ionic serve -l

It just shows error on browser as-

Cannot GET //__ion-dev-server/ionic_lab.html

I got some questions there in ionic forum but that won't work for me as there was no answer of that.

Hope for help!!!

Answer 1

Package.json and remove "ionic:serve"

"scripts": {
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve"
},

Remove "ionic:serve"

"scripts": {
    "ionic:build": "ionic-app-scripts build"
},

Answer 2

If I changed Package.json to

"scripts": { "ionic:build": "ionic-app-scripts build" },

The ionic serve --lab will serve, but it will not watch (auto-update when changes are made)

Then I found this solution: Ionic serve –lab don’t work in RC2

I changed Package.json to

"scripts": { "build": "ionic-app-scripts build", "watch": "ionic-app-scripts watch", "serve:before": "watch", "emulate:before": "watch", "deploy:before": "build", "build:before": "build", "run:before": "watch" },

And ionic serve --lab is now watching(auto-update when changes are made)