How can I use a MediaRecorder object in an Angular2 application?

Question

I\'m building a small Angular2 app and I\'m trying to use a MediaRecorder object (https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder) like so:

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Answer 1

Just npm install -D @types/dom-mediacapture-record is enough, don't modify tsconfig.json at all, no types no ///reference no typeRoots is neccesary (and those are rarely needed for anything in general....