Material Sidenav schematic creates build errors

Bug, feature request, or proposal:

Bug

What is the expected behavior?

ng build should work

What is the current behavior?

ng build fails

ERROR in src/app/navigation/navigation.component.ts(13,3): error TS2322: Type ‘Observable<boolean>’ is not assignable to type ‘Observable<BreakpointState>’. Type ‘boolean’ is not assignable to type ‘BreakpointState’.

What are the steps to reproduce?

Step 1 Created a new angular project e.g.: ng new angular6test

Step 2 Add matrerial and generate schematic

ng add @angular/material ng generate @angular/material:material-nav --name=navigation

I have added the navigation component in my app.component.html

e.g.

 <navigation>
</navigation>

Step 3 ng build

What is the use-case or motivation for changing an existing behavior?

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

This is my package.json

{ “name”: “angular6test”, “version”: “0.0.0”, “scripts”: { “ng”: “ng”, “start”: “ng serve”, “build”: “ng build”, “test”: “ng test”, “lint”: “ng lint”, “e2e”: “ng e2e” }, “private”: true, “dependencies”: { “@angular/animations”: “^6.0.2”, “@angular/cdk”: “^6.1.0”, “@angular/common”: “^6.0.2”, “@angular/compiler”: “^6.0.2”, “@angular/core”: “^6.0.2”, “@angular/forms”: “^6.0.2”, “@angular/http”: “^6.0.2”, “@angular/material”: “^6.1.0”, “@angular/platform-browser”: “^6.0.2”, “@angular/platform-browser-dynamic”: “^6.0.2”, “@angular/router”: “^6.0.2”, “core-js”: “^2.5.4”, “hammerjs”: “^2.0.8”, “rxjs”: “^6.0.0”, “zone.js”: “^0.8.26” }, “devDependencies”: { “@angular/compiler-cli”: “^6.0.2”, “@angular-devkit/build-angular”: “~0.6.3”, “typescript”: “~2.7.2”, “@angular/cli”: “~6.0.3”, “@angular/language-service”: “^6.0.2”, “@types/jasmine”: “~2.8.6”, “@types/jasminewd2”: “~2.0.3”, “@types/node”: “~8.9.4”, “codelyzer”: “~4.2.1”, “jasmine-core”: “~2.99.1”, “jasmine-spec-reporter”: “~4.2.1”, “karma”: “~1.7.1”, “karma-chrome-launcher”: “~2.2.0”, “karma-coverage-istanbul-reporter”: “~1.4.2”, “karma-jasmine”: “~1.1.1”, “karma-jasmine-html-reporter”: “^0.2.2”, “protractor”: “~5.3.0”, “ts-node”: “~5.0.1”, “tslint”: “~5.9.1” } }

Is there anything else we should know?

[chrisvfabio]

Yeah, the isHandset$ return type was changed. The following works for me:

isHandset$: Observable<boolean> = this.breakpointObserver.observe(Breakpoints.Handset)
    .pipe(
      map(result => result.matches)
    );

isHandset$: Observable<BreakpointState> => isHandset$: Observable<boolean>

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