Only create divs when needed

dist/react-leaflet.js

@@ -2521,11 +2521,11 @@ return /******/ (function(modules) { // webpackBootstrap
 	  };
 
 	  MapLayer.prototype.render = function render() {
-	    return _react2.default.createElement(
+	    return Array.isArray(this.props.children) ? _react2.default.createElement(
 	      'div',
 	      { style: { display: 'none' } },
 	      this.props.children
-	    );
+	    ) : this.props.children || null;
 	  };
 
 	  _createClass(MapLayer, [{

lib/MapLayer.js

@@ -54,11 +54,11 @@ var MapLayer = function (_MapComponent) {
   };
 
   MapLayer.prototype.render = function render() {
-    return _react2.default.createElement(
+    return Array.isArray(this.props.children) ? _react2.default.createElement(
       'div',
       { style: { display: 'none' } },
       this.props.children
-    );
+    ) : this.props.children || null;
   };
 
   _createClass(MapLayer, [{

package.json

@@ -48,7 +48,7 @@
     "babel-cli": "^6.14.0",
     "babel-core": "^6.14.0",
     "babel-eslint": "^7.1.0",
-    "babel-jest": "^16.0.0",
+    "babel-jest": "^17.0.0",
     "babel-loader": "^6.2.5",
     "babel-plugin-dev-expression": "^0.2.1",
     "babel-plugin-lodash": "^3.2.9",
@@ -57,17 +57,17 @@
     "babel-preset-es2015": "^6.14.0",
     "babel-preset-react": "^6.11.1",
     "babel-preset-stage-0": "^6.5.0",
-    "eslint": "^3.8.1",
+    "eslint": "^3.10.0",
     "eslint-config-standard": "^6.1.0",
     "eslint-config-standard-jsx": "^3.1.0",
     "eslint-config-standard-react": "^4.1.0",
-    "eslint-plugin-promise": "^3.2.0",
+    "eslint-plugin-promise": "^3.3.2",
     "eslint-plugin-react": "^6.3.0",
     "eslint-plugin-standard": "^2.0.1",
-    "flow-bin": "^0.34.0",
-    "jest-cli": "^16.0.2",
+    "flow-bin": "^0.35.0",
+    "jest-cli": "^17.0.0",
     "leaflet": "^1.0.0",
-    "lodash-webpack-plugin": "^0.10.1",
+    "lodash-webpack-plugin": "^0.10.5",
     "react": "^15.3.2",
     "react-addons-test-utils": "^15.3.2",
     "react-dom": "^15.3.2",
@@ -77,6 +77,8 @@
   },
   "jest": {
     "collectCoverage": true,
-    "scriptPreprocessor": "<rootDir>/node_modules/babel-jest"
+    "transform": {
+      ".*": "<rootDir>/node_modules/babel-jest"
+    }
   }
 }

src/MapLayer.js

@@ -33,7 +33,9 @@ export default class MapLayer extends MapComponent {
     this.layerContainer.removeLayer(this.leafletElement)
   }
 
-  render (): any {
-    return <div style={{display: 'none'}}>{this.props.children}</div>
+  render (): React.Element<*> | null {
+    return Array.isArray(this.props.children)
+      ? <div style={{display: 'none'}}>{this.props.children}</div>
+      : (this.props.children || null)
   }
 }