tree-component | A reactjs and vuejs tree component | Frontend Framework library

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package.json

my first questions so accept my apologies if I do sth wrong ;-)

I am creating an web-app which is using angular-slickgrid Tree so show some data from a database. Creating the Tree itself is working and I am getting those data in the frontend by using a promise to get them from backend and therefore from my db. For that I in particular expanded this "Example 29: Tree Data (from a Hierarchical Dataset)" of angular-slickgrid. My version of this is 2.30.2, Angular Version is 11.2.12 and Typescript 4.1.

My problem is, that those data do not show up automatically in the tree, but just after I click on the row header... so those data arrive frontend indeed! Unfortunatly I could not find out which event is exactly triggered (looked in web debugger and inspector).

I was said, actually it should work just by giving my db-data to the so called "datasetHierarchical" varible (after they arrived in the frontend) since there is an assignment in the html '[datasetHierarchical]="datasetHierarchical"'. For mocks directly in the Tree-Component this is working. But in my case with data from a db this does not work as well as all methods I tried like 'this.angularGrid.sortService.sortLocalGridByDefaultSortFieldId();' or 'this.angularGrid.gridService.invalidateHierarchicalDataset(this.datasetHierarchical);', which I thought should re-render the Tree-Grid after my data arrived frontend.

It is kind of frustrating that such a trivial thing does not work but maybe does someone else see (a simple) solution I oversaw... So thanks for any help in advance! :-)

And the data request is also quite simple:

Here's the package.json file:

I have an Angular 6 project I would like to upgrade to Angular 10, but I have read it’s best to do it one major version at a time, so I am trying to get it to 7.3 for now. I have followed all the steps on update.angular.io, but I am beginning to think it’s not a very complete guide. This question will be broken up into several sub-questions:

1. After upgrading Angular Core and CLI (ng update @angular/cli@7 @angular/core@7), I tried to run “ng serve”, but then get these compile errors:

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I use Angular Tree Component in my project and for the past couple of days, I get the following error while building the Angular application. The issue was resolved after quiet a struggle. I am posting my answer below for the community.

I am trying to follow the following tutorial, but I keep the getting the error

I have single page Angular based web application.And using below css classes for styling. so what i need to do in these below css classes so that most make use of GPU instead of using CPU. Like transform,transition,position etc etc.

here is the css style scss file. CSS:

Hi i'm trying to run this code on Angular 6 after updating from angular2-modal to ngx-modialog

I tried following this tutorial, but I get errors like Identifier expected., '{' or ';' expected., Parameter declaration expected., Cannot find name '$'. Did you mean the instance member 'this.$'? thrown out. The code is supposed to click on the treeview arrows to expand the view and then bind a click event to each single element.

Component.ts: