From b410661e5bdfe1711d4e8055cf4f99d95bfc6a59 Mon Sep 17 00:00:00 2001
From: David Schneider <davschne@uw.edu>
Date: Mon, 17 Apr 2017 16:05:22 -0700
Subject: [PATCH] Add comment to explain the type parameters.

---
 types/react-leaflet/index.d.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/types/react-leaflet/index.d.ts b/types/react-leaflet/index.d.ts
index 3e0fc90238..11ec5573cf 100644
--- a/types/react-leaflet/index.d.ts
+++ b/types/react-leaflet/index.d.ts
@@ -111,6 +111,13 @@ type LeafletEvents = MapEvents
     & FeatureGroupEvents
     & LayersControlEvents;
 
+// Most react-leaflet components take two type parameters:
+// - P : the component's props object
+// - E : the corresponding Leaflet element
+
+// These type parameters aren't needed for instantiating a component, but they are useful for
+// extending react-leaflet classes.
+
 export class MapComponent<P, E extends Leaflet.Class> extends React.Component<P, {}> {
     _leafletEvents: LeafletEvents;
     leafletElement: E;