"design:paramnames" metadata key

From https://github.com/Microsoft/TypeScript/pull/2589

A few notes on metadata:

• Type metadata uses the metadata key "design:type".
• Parameter type metadata uses the metadata key "design:paramtypes".
• Return type metadata uses the metadata key "design:returntype".

Can you please add support for a "design:paramnames" metadata key? It would return the design-time names of the arguments of a function

I can convert a function to string at runtime using Function.prototype.toString() and then use a couple of Regex to get the parameter names:

STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
ARGUMENT_NAMES = /([^\s,]+)/g;

But when a minifier/compressor is used the param names become "a", "b" ...

I would like to have a way to access the design-time names of the arguments of a function at run-time even after compression.

Das Issue nennt keine Dateien oder Tests. Beginne damit, die Emission der Decorator-Metadaten durch den Compiler und die bestehende Behandlung von design:type, design:paramtypes und design:returntype zu lokalisieren; ermittle anschließend den Umfang der Hinzufügung von design:paramnames und definiere Tests für die emittierten Argumentnamen, einschließlich des in der Anfrage beschriebenen Minifizierungsproblems.