angular6

Errors: Data path “.builders[‘app-shell’]” should have required property ‘class’

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I am getting this error while running my application. Here are the details of my application. Angular CLI: 7.3.3 Node: 10.15.1 Angular: 7.2.7 @angular-devkit/architect -0.13.3 @angular-devkit/build-angular- 0.800.1 @angular-devkit/build-optimizer – 0.800.1 @angular-devkit/build-webpack – 0.800.1 @angular-devkit/core -7.3.3 @angular-devkit/schematics -7.3.3 @angular/cli -7.3.3 @ngtools/webpack -8.0.1 @schematics/angular -7.3.3 @schematics/update 0.13.3 rxjs 6.3.3 typescript 3.2.4 webpack 4.30.0 I have already tried … Read more

What is the purpose of providedIn with the Injectable decorator when generating Services in Angular 6?

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When generating services in the Angular CLI, it is adding extra metadata with a ‘provided in’ property with a default of ‘root’ for the Injectable decorator. @Injectable({ providedIn: ‘root’, }) What exactly does providedIn do? I am assuming this is making the service available like a ‘global’ type singleton service for the whole application, however, … Read more

How to set environment via `ng serve` in Angular 6

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I am trying to update my Angular 5.2 app to Angular 6. I successfully followed instructions in the Angular update guide (including the update of angular-cli to v6), and now I am trying to serve the app via ng serve –env=local But this gives me error: Unknown option: ‘–env’ I use multiple environments (dev/local/prod), and … Read more

Could not find module “@angular-devkit/build-angular”

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After updating to Angular 6.0.1, I get the following error on ng serve: Could not find module “@angular-devkit/build-angular” from “/home/Projects/myProjectName”. Error: Could not find module “@angular-devkit/build-angular” from “/home/Projects/myProjectName”. at Object.resolve (/home/Projects/myProjectName/node_modules/@angular-devkit/core/node/resolve.js:141:11) at Observable.rxjs_1.Observable [as _subscribe] (/home/Projects/myProjectName/node_modules/@angular-devkit/architect/src/architect.js:132:40) ng update says everything is in order. Deleting node_modules folder and a fresh npm install install did not help … Read more