Extending Karma reporter from Typescript

Hey guys, so i need to create new reporter for karma, specifically for building a vscode extension for running angular tests. How can I extend the Karma Reporter from typescript? all the examples I found are custom reporters created from javascript and set in the configuration file.

is there a way to add a reporter programatically?
are there any typings made of the complete karma runner solution?

Review the existing JavaScript custom-reporter examples and the configuration-file path mentioned in the issue, then compare them with the TypeScript and VS Code extension use case. Treat programmatic registration and complete typings as separate questions; the work is done when the requested support or guidance is clearly scoped.

Written by the indexing model from the issue text.