Switch to Angular 8

src/lib/directives/resizer.ts

@@ -1,5 +1,5 @@
 import {Directive, Input, Output, EventEmitter, Inject, ElementRef, OnInit, OnDestroy} from '@angular/core';
-import {DOCUMENT} from '@angular/platform-browser'
+import {DOCUMENT} from '@angular/common'
 import { fromEvent } from 'rxjs';
 import { sampleTime } from 'rxjs/operators';
 

src/lib/palette/palette.component.ts

@@ -4,7 +4,7 @@ import { debounceTime } from 'rxjs/operators';
 import { dia } from 'jointjs';
 import { Flo } from '../shared/flo-common';
 import { Shapes, Constants } from '../shared/shapes';
-import { DOCUMENT } from '@angular/platform-browser'
+import { DOCUMENT } from '@angular/common'
 import * as _$ from 'jquery';
 const joint: any = Flo.joint;
 const $: any = _$;