How make a dropdown editable in html using angular 10 - html

I am working in angular . I need a code to make a dropdown editable in html using angular

You could take a look at Primeng library.
They have editable dropdown component.
https://www.primefaces.org/primeng/showcase/#/dropdown
And if you don't want to use library, you could just get inspiration from source code

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If you will take a look at the source you will see they are using <aio-toc ng-version="8.1.0-next.1">
When you will look for it you will see the source code over here:
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