"Ionic Serve" Error - Please Help Me!!

[ptmagalhaes]

Mac-mini-de-teste:eventos Devign$ ionic serve --l

Running 'serve:before' npm script before serve

ionic-hello-world@ watch /Users/teste/Desktop/Ionic/eventos
ionic-app-scripts watch

/Users/teste/Desktop/Ionic/eventos/node_modules/node-sass/lib/index.js:13
throw new Error(errors.unsupportedEnvironment());
^

Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (51)
For more information on which environments are supported please see:
https://github.com/sass/node-sass/releases/tag/v3.10.1
at Object. (/Users/teste/Desktop/Ionic/eventos/node_modules/node-sass/lib/index.js:13:11)
at Module._compile (module.js:571:32)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:488:32)
at tryModuleLoad (module.js:447:12)
at Function.Module._load (module.js:439:3)
at Module.require (module.js:498:17)
at require (internal/module.js:20:19)
at Object. (/Users/teste/Desktop/Ionic/eventos/node_modules/@ionic/app-scripts/dist/sass.js:11:19)
at Module._compile (module.js:571:32)

npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "watch"
npm ERR! node v7.3.0
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! ionic-hello-world@ watch: ionic-app-scripts watch
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ionic-hello-world@ watch script 'ionic-app-scripts watch'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the ionic-hello-world package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! ionic-app-scripts watch
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs ionic-hello-world
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls ionic-hello-world
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /Users/teste/Desktop/Ionic/eventos/npm-debug.log
Caught exception:
undefined

Mind letting us know? https://github.com/driftyco/ionic-cli/issues

Mac-mini-de-teste:eventos Devign$ ionic info

---

Your system information:

Cordova CLI: 6.4.0
Ionic Framework Version: 2.0.0-rc.3
Ionic CLI Version: 2.1.4
Ionic App Lib Version: 2.1.2
Ionic App Scripts Version: 0.0.48
ios-deploy version: 1.9.0
ios-sim version: 5.0.13
OS: Mac OS X El Capitan
Node Version: v7.3.0
Xcode version: Xcode 8.2 Build version 8C23

[jthoms1]

No exact evidence on this and I couldn't find much, but that said I am pretty sure the version of node-sass being installed does not work with node 7.3. Try switching to use the latest LTS node and the problem will probably resolve. https://nodejs.org/en/download/

[ptmagalhaes]

Now i see this error::

Mac-mini-de-teste:eventos Devign$ ionic serve

Running 'serve:before' npm script before serve

ionic-hello-world@ watch /Users/teste/Desktop/Ionic/eventos
ionic-app-scripts watch

[12:00:02] ionic-app-scripts 0.0.48
[12:00:02] watch started ...
[12:00:02] build dev started ...
[12:00:02] watch failed: "main.dev.ts" and "main.prod.ts" have been deprecated. Please create a new file "main.ts"
containing the content of "main.dev.ts", and then delete the deprecated files. For more information, please
see the default Ionic project main.ts file here:
https://github.com/driftyco/ionic2-app-base/tree/master/src/app/main.ts
[12:00:02] ionic-app-script task: "watch"
[12:00:02] Error: "main.dev.ts" and "main.prod.ts" have been deprecated. Please create a new file "main.ts" containing
the content of "main.dev.ts", and then delete the deprecated files. For more information, please see the
default Ionic project main.ts file here:
https://github.com/driftyco/ionic2-app-base/tree/master/src/app/main.ts

npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "watch"
npm ERR! node v7.3.0
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! ionic-hello-world@ watch: ionic-app-scripts watch
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ionic-hello-world@ watch script 'ionic-app-scripts watch'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the ionic-hello-world package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! ionic-app-scripts watch
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs ionic-hello-world
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls ionic-hello-world
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /Users/teste/Desktop/Ionic/eventos/npm-debug.log
Caught exception:
undefined

Mind letting us know? https://github.com/driftyco/ionic-cli/issues

[jthoms1]

A recent change occured in ionic-app-scripts.

Please create a new file "main.ts" containing the content of "main.dev.ts", and then delete  the deprecated files.

Rename the src/app/main.dev.ts file to src/app/main.ts and then delete src/app/main.prod.ts.