From 31b23f010158fe775b50e50b9a38e2c06e2f2623 Mon Sep 17 00:00:00 2001
From: Evan Sangaline <esangaline@gmail.com>
Date: Sat, 4 Apr 2020 12:14:15 -0700
Subject: [PATCH 1/3] Add a fix for the redraw bug.

---
 src/HeatmapLayer.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/HeatmapLayer.js b/src/HeatmapLayer.js
index 7534929..2eec3f6 100644
--- a/src/HeatmapLayer.js
+++ b/src/HeatmapLayer.js
@@ -294,6 +294,12 @@ export default withLeaflet(class HeatmapLayer extends MapLayer {
   }
 
   redraw(): void {
+    // It's possible that the map has unmounted while we've waited for an animation frame, so we
+    // need to check that it still exists before proceeding with the redraw.
+    if (!this.props.leaflet.map._mapPane) {
+      return;
+    }
+
     const r = this._heatmap._r;
     const size = this.props.leaflet.map.getSize();
 

From 3d8bdd535c83ba11bd39b087f5e53ed4789a6a31 Mon Sep 17 00:00:00 2001
From: Evan Sangaline <esangaline@gmail.com>
Date: Sat, 4 Apr 2020 12:14:55 -0700
Subject: [PATCH 2/3] Update the compiled version of the library.

---
 lib/HeatmapLayer.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/HeatmapLayer.js b/lib/HeatmapLayer.js
index fac909d..49af6a5 100644
--- a/lib/HeatmapLayer.js
+++ b/lib/HeatmapLayer.js
@@ -306,6 +306,12 @@ exports.default = (0, _reactLeaflet.withLeaflet)((_temp = _class = function (_Ma
   };
 
   HeatmapLayer.prototype.redraw = function redraw() {
+    // It's possible that the map has unmounted while we've waited for an animation frame, so we
+    // need to check that it still exists before proceeding with the redraw.
+    if (!this.props.leaflet.map._mapPane) {
+      return;
+    }
+
     var r = this._heatmap._r;
     var size = this.props.leaflet.map.getSize();
 

From 39b68828a1a28fd741072ecc82b534d7c891d606 Mon Sep 17 00:00:00 2001
From: Evan Sangaline <esangaline@gmail.com>
Date: Sat, 4 Apr 2020 12:17:34 -0700
Subject: [PATCH 3/3] Bump the package version.

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 6735b02..66d9c67 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-leaflet-heatmap-layer",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "A custom layer for heatmaps in react-leaflet",
   "main": "lib/HeatmapLayer.js",
   "scripts": {