How to migrate an Angular 2 Project to Angular 4?

Hi people,

Angular is growing ;) and now we have to migrate it to be updated!

The steps to upgrade to angular 4 are as follows:

First of all verify the Node Version:

> node -v

To actualice the version download it from: https://nodejs.org/en/download/

Then, we are going to actualice angular/cli:

First, we have to remove the actuals possibles versions:

> npm uninstall -g @angular/cli

> npm uninstall -g @angular-cli

Then, we are going to install it again:

> npm install -g @angular/cli

Then, verify the versions installed:

> ng -v

It must shows something like this:

    _                      _                 ____ _     ___ 
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | | 
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | | 
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/                                        
@angular/cli: 1.0.0                                  
node: 6.10.2                                              
os: win32 x64 

Then, goes to the Project directory and actualice the @angular version:

In Windows PC:

npm install @angular/common@next @angular/compiler@next @angular/compiler-cli@next @angular/core@next @angular/forms@next @angular/http@next @angular/platform-browser@next @angular/platform-browser-dynamic@next @angular/platform-server@next @angular/router@next @angular/animations@next --save

In Mac PC:

npm install @angular/{common,compiler,compiler-cli,core,forms,http,platform-browser,platform-browser-dynamic,platform-server,router,animations}@next --save

In last, actualice typescript version:

> npm install typescript@2.2.1 --save

And finally, start the project:

> ng serve