Update to Angular 5

As Now, angular 5 has been released officially on 1st Novemebr 2017, So for those who want to update your old angular applications to angular 5:

1) The Angular team has also put a handy tool to make upgrading from any version to angular 5, as simple as possible.

2) You will have to upgrade all of your angular packages to version 5.0, run the following command:

npm install @angular/animations@^5.0.0 @angular/common@^5.0.0 @angular/compiler@^5.0.0 @angular/compiler-cli@^5.0.0 @angular/core@^5.0.0 @angular/forms@^5.0.0 @angular/http@^5.0.0 @angular/platform-browser@^5.0.0 @angular/platform-browser-dynamic@^5.0.0 @angular/platform-server@^5.0.0 @angular/router@^5.0.0 zone.js@^0.8.4 @angular/upgrade@^5.0.0 typescript@2.4.2 rxjs@^5.5.2

3) Angular 5 now also depends on TypeScript 2.4.2 and RxJS 5.5.2, so you’ll have to upgrade those package as well.

npm install typescript@2.4.2 --save-exact 

4) If you rely on the date, currency, decimal, or percent pipes, in 5 you will see minor changes to the format. For applications using locales other than en-us you will need to import it and optionally locale_extended_fr from @angular/common/i18n_data/locale_fr and registerLocaleData(local). For more information on pipes breaking changes: https://stackoverflow.com/a/47263949/2810015

5) Use of implements instead of extends with any lifecycle events : Ensure you don't use extends OnInit, or use extends with any lifecycle event. Instead use implements .

6) Switch from HttpModule and the Http service to HttpClientModule and the HttpClient service. HttpClient simplifies the default ergonomics (You don't need to map to json anymore and remove any map(res => res.json()) calls, which are no longer needed.) and now supports typed return values and interceptors.

7) The recommended way of importing operators in RxJS 5.5 is from rxjs/operators.

import { map, filter, mergeMap, tap } from 'rxjs/operators';

I have tried to explain more here. https://onlyforcoder.blogspot.in/2017/11/angular-5-upgrade-your-project-To-Angular5.html

EDIT: Version 5.0.0 now does exist as of Nov. 1st 2017

NPM is telling you 5.0.0 doesnt exist. change your package.json to one of the suggested release candidates like 5.0.0-rc.0. There is a good chance they aren't all exactly that either so read the npm error it is actually helpful in this case.

"dependencies": {
    "@angular/animations": "5.0.0-rc.0",
    "@angular/common": "5.0.0-rc.0",
    "@angular/compiler": "5.0.0-rc.0",
    "@angular/core": "5.0.0-rc.0",
    "@angular/forms": "5.0.0-rc.0",
    "@angular/http": "5.0.0-rc.0",
    "@angular/platform-browser": "5.0.0-rc.0",
    "@angular/platform-browser-dynamic": "5.0.0-rc.0",
    "@angular/router": "5.0.0-rc.0",
    "@types/jwt-decode": "^2.2.1",
    "bootstrap": "^3.3.7",
    "bootstrap-sass": "^3.3.7",
    "classlist.js": "^1.1.20150312",
    "core-js": "^2.4.1",
    "intl": "^1.2.5",
    "jquery": "^3.2.1",
    "jwt-decode": "^2.2.0",
    "rxjs": "^5.4.2",
    "zone.js": "^0.8.14"
},
"devDependencies": {
    "@angular/cli": "1.4.0-rc.2",
    "@angular/compiler-cli": "5.0.0",
    "@angular/language-service": "5.0.0",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "angular-ide": "^0.9.31",
    "codelyzer": "~3.1.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "node-sass": "^4.5.3",
    "protractor": "~5.1.2",
    "raw-loader": "^0.5.1",
    "sass-loader": "^6.0.6",
    "sw-precache": "^5.2.0",
    "ts-node": "~3.2.0",
    "tslint": "~5.3.2",
    "typescript": "~2.3.3"
}

Edit: This is the latest Angular 5 working dependencies:

  "dependencies": {
    "@angular/animations": "^5.2.0",
    "@angular/common": "^5.2.0",
    "@angular/compiler": "^5.2.0",
    "@angular/core": "^5.2.0",
    "@angular/forms": "^5.2.0",
    "@angular/http": "^5.2.0",
    "@angular/platform-browser": "^5.2.0",
    "@angular/platform-browser-dynamic": "^5.2.0",
    "@angular/router": "^5.2.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.6",
    "zone.js": "^0.8.19"
  },
  "devDependencies": {
    "@angular/cli": "1.6.7",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "~2.5.3"
  }

Just copy Paste & run npm install

Original Answer by @Vishal Gulati: https://stackoverflow.com/a/47132265/6877180

Quick Overview:

Upgrade Angular with all its packages to the latest version.

npm install typescript@2.4 --save-dev
npm install @angular/common@latest @angular/compiler@latest @angular/compiler-cli@latest @angular/core@latest @angular/forms@latest @angular/http@latest @angular/platform-browser@latest @angular/platform-browser-dynamic@latest @angular/platform-server@latest @angular/router@latest @angular/animations@latest --save

Upgrade CLI if needed

npm uninstall -g @angular/cli
npm cache clean
npm install -g @angular/cli@latest

Here is the command to update Angular CLI in version 5.2.0

npm install @angular/compiler-cli@5.2.0

This problem is occur because of npm version In order to work in Angular 5 ;

"node": ">=6.9.5 <7.0.0",
"npm": ">=3.10.7 <4.0.0",
"yarn": ">=1.0.2 <2.0.0"

Basically, there’re few important steps to achieve that.

1. Upgrade Angular CLI to the latest version.
2. Modify Angular 4 app dependencies and Update the dependencies.

That’s it, this way you can easily upgrade your Angular 4 app to Angular 5, Read more

Before updating, rename your template tags to ng-template.

Update all of your dependencies to the latest Angular and the right version of TypeScript. If you are using Windows, you can use:

npm install @angular/animations@'^5.0.0' @angular/common@'^5.0.0' @angular/compiler@'^5.0.0' @angular/compiler-cli@'^5.0.0' @angular/core@'^5.0.0' @angular/forms@'^5.0.0' @angular/http@'^5.0.0' @angular/platform-browser@'^5.0.0' @angular/platform-browser-dynamic@'^5.0.0' @angular/platform-server@'^5.0.0' @angular/router@'^5.0.0' typescript@2.4.2 rxjs@'^5.5.2'

npm install typescript@2.4.2 --save-exact