which-collection/.nycrc

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

{
	"all": true,
	"check-coverage": false,
	"reporter": ["text-summary", "text", "html", "json"],
	"lines": 86,
	"statements": 85.93,
	"functions": 82.43,
	"branches": 76.06,
	"exclude": [
		"coverage",
		"test"
	]
}