From c81d1ef5ecd16f51ac397e14bd96f5a8110eeba7 Mon Sep 17 00:00:00 2001
From: Rowan Winsemius <rowanwins@yahoo.com.au>
Date: Tue, 12 Jun 2018 23:57:45 +1000
Subject: [PATCH 1/2] Center-of-mass fix. Resolves #1385

---
 packages/turf-center-of-mass/index.ts | 4 ++--
 packages/turf-center-of-mass/test.js  | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/packages/turf-center-of-mass/index.ts b/packages/turf-center-of-mass/index.ts
index d0abd8b617..61377d0d5b 100644
--- a/packages/turf-center-of-mass/index.ts
+++ b/packages/turf-center-of-mass/index.ts
@@ -1,7 +1,7 @@
 import convex from '@turf/convex';
 import centroid from '@turf/centroid';
 import { point, Properties, AllGeoJSON, Feature, Point } from '@turf/helpers';
-import { getType } from '@turf/invariant';
+import { getType, getCoord } from '@turf/invariant';
 import { coordEach } from '@turf/meta';
 
 /**
@@ -25,7 +25,7 @@ function centerOfMass<P = Properties>(geojson: any, options: {
 } = {}): Feature<Point, P> {
     switch (getType(geojson)) {
     case 'Point':
-        return geojson;
+        return point(getCoord(geojson), options.properties);
     case 'Polygon':
         var coords = [];
         coordEach(geojson, function (coord) {
diff --git a/packages/turf-center-of-mass/test.js b/packages/turf-center-of-mass/test.js
index 7cdda486aa..c8349d43c4 100644
--- a/packages/turf-center-of-mass/test.js
+++ b/packages/turf-center-of-mass/test.js
@@ -58,6 +58,13 @@ test('center of mass -- no area', t => {
     t.end();
 });
 
+test('center of mass -- point', t => {
+    const p = point([0, 0]);
+    const pt = centerOfMass(p);
+    t.deepEqual(pt, point([0, 0]), 'point returns pt');
+    t.end();
+});
+
 test('center of mass -- properties', t => {
     const line = lineString([[0, 0], [1, 1]]);
     const pt = centerOfMass(line, {properties: {foo: 'bar'}});

From a72fa53d2f001951ca0bb6a35967ad56e0604df7 Mon Sep 17 00:00:00 2001
From: Rowan Winsemius <rowanwins@yahoo.com.au>
Date: Wed, 13 Jun 2018 00:01:11 +1000
Subject: [PATCH 2/2] Additional test for input geom point

---
 packages/turf-center-of-mass/test.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/packages/turf-center-of-mass/test.js b/packages/turf-center-of-mass/test.js
index c8349d43c4..a20d9251d9 100644
--- a/packages/turf-center-of-mass/test.js
+++ b/packages/turf-center-of-mass/test.js
@@ -65,6 +65,13 @@ test('center of mass -- point', t => {
     t.end();
 });
 
+test('center of mass -- point geom', t => {
+    const geomPoint = {type: 'Point', coordinates: [0, 0]};
+    const pt = centerOfMass(geomPoint);
+    t.deepEqual(pt, point([0, 0]), 'point geom returns pt');
+    t.end();
+});
+
 test('center of mass -- properties', t => {
     const line = lineString([[0, 0], [1, 1]]);
     const pt = centerOfMass(line, {properties: {foo: 'bar'}});