In Typescript when listing the function overrides you have to enumerate all possible usages, seperate from the actual function signature. For example:

watch(): ChangeStream;
watch(pipeline?: Document[]): ChangeStream;
watch(pipeline?: Document[], options?: ChangeStreamOptions): ChangeStream {/* ... */}

Since there is no override that accepts options, options is not exposed as a parameter to the user of this function. This is also a case where no override is necessary. We should scan through our usage of overrides and make sure we have used it correctly and completely.

Helpful regex: \1 references the first capture group!

^\s*(\w+)\(.*\).+;\n\s+\1