What components do you use (or recommend) that implement IDE functionality?

Question

Angular

The task of editing js scripts online is considered.
It will be necessary to edit separate pieces of code in the system (it is thought that our separate service will give it)
Requirements:
Language: JavaScript
Syntax highlighting
If possible - auto-completion (may not be semantic)
Embeddability
Google already produces full-fledged online ide, but this is not it. (maybe I googled something wrong)
What libraries or components do you use?