I want to use the new Map.groupBy function in an NX/Angular/TypeScript project, but this is not working. I had IDE errors saying that the function is unrecognized. I've fixed that updating tsconfig.base.json file to use ESNext: "lib": ["ESNext", "dom"], Now my unit tests are not working due to a similar error: Map.groupBy is not a function TypeError: Map.groupBy is not a function What are the requirements to make it work? Continue reading...
