diff --git a/js/geo/lng_lat.js b/js/geo/lng_lat.js
index 7400fb203cd..704bd0aa8e6 100644
--- a/js/geo/lng_lat.js
+++ b/js/geo/lng_lat.js
@@ -82,9 +82,11 @@ LngLat.prototype.toString = function () {
 LngLat.convert = function (input) {
     if (input instanceof LngLat) {
         return input;
-    }
-    if (Array.isArray(input)) {
+    } else if (input && input.hasOwnProperty('lng') && input.hasOwnProperty('lat')) {
+        return new LngLat(input.lng, input.lat);
+    } else if (Array.isArray(input) && input.length === 2) {
         return new LngLat(input[0], input[1]);
+    } else {
+        throw new Error("`LngLatLike` argument must be specified as a LngLat instance, an object {lng: <lng>, lat: <lat>}, or an array of [<lng>, <lat>]");
     }
-    return input;
 };
diff --git a/js/geo/lng_lat_bounds.js b/js/geo/lng_lat_bounds.js
index 53e4e770ec3..b20098f383b 100644
--- a/js/geo/lng_lat_bounds.js
+++ b/js/geo/lng_lat_bounds.js
@@ -80,7 +80,14 @@ LngLatBounds.prototype = {
             if (!sw2 || !ne2) return this;
 
         } else {
-            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
+            if (Array.isArray(obj)) {
+                if (obj.every(Array.isArray)) {
+                    return this.extend(LngLatBounds.convert(obj));
+                } else {
+                    return this.extend(LngLat.convert(obj));
+                }
+            }
+            return this;
         }
 
         if (!sw && !ne) {
diff --git a/test/js/geo/lng_lat.test.js b/test/js/geo/lng_lat.test.js
index 183b8d609c8..8c501997d98 100644
--- a/test/js/geo/lng_lat.test.js
+++ b/test/js/geo/lng_lat.test.js
@@ -23,8 +23,12 @@ test('LngLat', function(t) {
 
     t.test('#convert', function(t) {
         t.ok(LngLat.convert([0, 10]) instanceof LngLat, 'convert creates a LngLat instance');
+        t.ok(LngLat.convert({lng: 0, lat: 10}) instanceof LngLat, 'convert creates a LngLat instance');
+        t.ok(LngLat.convert({lng: 0, lat: 0}) instanceof LngLat, 'convert creates a LngLat instance');
         t.ok(LngLat.convert(new LngLat(0, 0)) instanceof LngLat, 'convert creates a LngLat instance');
-        t.equal(LngLat.convert('othervalue'), 'othervalue', 'passes through other values');
+        t.throws(function() {
+            LngLat.convert(0, 10);
+        }, "`LngLatLike` argument must be specified as a LngLat instance, an object {lng: <lng>, lat: <lat>}, or an array of [<lng>, <lat>]", 'detects and throws on invalid input');
         t.end();
     });
 
diff --git a/test/js/geo/lng_lat_bounds.test.js b/test/js/geo/lng_lat_bounds.test.js
index f4355106792..b9aadba1f11 100644
--- a/test/js/geo/lng_lat_bounds.test.js
+++ b/test/js/geo/lng_lat_bounds.test.js
@@ -55,6 +55,13 @@ test('LngLatBounds', function(t) {
         t.equal(bounds.getNorth(), 10);
         t.equal(bounds.getEast(), 10);
 
+        bounds.extend(new LngLat(-15, -15));
+
+        t.equal(bounds.getSouth(), -15);
+        t.equal(bounds.getWest(), -15);
+        t.equal(bounds.getNorth(), 10);
+        t.equal(bounds.getEast(), 10);
+
         t.end();
     });
 
@@ -68,6 +75,14 @@ test('LngLatBounds', function(t) {
         t.equal(bounds1.getNorth(), 10);
         t.equal(bounds1.getEast(), 10);
 
+        var bounds3 = [[-15, -15], [15, 15]];
+        bounds1.extend(bounds3);
+
+        t.equal(bounds1.getSouth(), -15);
+        t.equal(bounds1.getWest(), -15);
+        t.equal(bounds1.getNorth(), 15);
+        t.equal(bounds1.getEast(), 15);
+
         t.end();
     });
 
diff --git a/test/js/ui/camera.test.js b/test/js/ui/camera.test.js
index 3aa868f30df..c0e787f8c30 100644
--- a/test/js/ui/camera.test.js
+++ b/test/js/ui/camera.test.js
@@ -35,6 +35,13 @@ test('camera', function(t) {
             t.end();
         });
 
+        t.test('throws on invalid center argument', function(t) {
+            t.throws(function() {
+                camera.jumpTo({center: 1});
+            }, Error, 'throws with non-LngLatLike argument');
+            t.end();
+        });
+
         t.test('keeps current center if not specified', function(t) {
             camera.jumpTo({});
             t.deepEqual(camera.getCenter(), { lng: 1, lat: 2 });
@@ -144,6 +151,13 @@ test('camera', function(t) {
             t.end();
         });
 
+        t.test('throws on invalid center argument', function(t) {
+            t.throws(function() {
+                camera.jumpTo({center: 1});
+            }, Error, 'throws with non-LngLatLike argument');
+            t.end();
+        });
+
         t.test('emits move events, preserving eventData', function(t) {
             var started, moved, ended,
                 eventData = { data: 'ok' };
@@ -305,6 +319,14 @@ test('camera', function(t) {
             t.end();
         });
 
+        t.test('throws on invalid center argument', function(t) {
+            var camera = createCamera();
+            t.throws(function() {
+                camera.panTo({center: 1});
+            }, Error, 'throws with non-LngLatLike argument');
+            t.end();
+        });
+
         t.test('pans with specified offset', function(t) {
             var camera = createCamera();
             camera.panTo([100, 0], { offset: [100, 0], duration: 0 });
@@ -706,6 +728,14 @@ test('camera', function(t) {
             t.end();
         });
 
+        t.test('throws on invalid center argument', function(t) {
+            var camera = createCamera();
+            t.throws(function() {
+                camera.flyTo({center: 1});
+            }, Error, 'throws with non-LngLatLike argument');
+            t.end();
+        });
+
         t.test('zooms to specified level', function(t) {
             var camera = createCamera();
             camera.flyTo({ zoom: 3.2, animate: false });
diff --git a/test/js/ui/map.test.js b/test/js/ui/map.test.js
index d0db577f55d..7611110cee2 100755
--- a/test/js/ui/map.test.js
+++ b/test/js/ui/map.test.js
@@ -430,6 +430,17 @@ test('Map', function(t) {
             t.end();
         });
 
+        t.test('throws on invalid bounds', function(t) {
+            var map = createMap({zoom:0});
+            t.throws(function() {
+                map.setMaxBounds([-130.4297, 50.0642], [-61.52344, 24.20688]);
+            }, Error, 'throws on two decoupled array coordinate arguments');
+            t.throws(function() {
+                map.setMaxBounds(-130.4297, 50.0642, -61.52344, 24.20688);
+            }, Error, 'throws on individual coordinate arguments');
+            t.end();
+        });
+
         function toFixed(bounds) {
             var n = 10;
             return [