fix: add guard check while changing MapOptions

lib/components/map.component.ts

@@ -83,6 +83,9 @@ export class MapComponent implements OnInit, OnChanges {
 
   public ngOnChanges(changes: { [propertyName: string]: SimpleChange }) {
     const opts = changes.options.currentValue as MapOptions
+    if (!opts) {
+      return console.warn('MapOptions change was ignored since you are passing empty value')
+    }
     this._service.setOptions(opts)
   }
 

lib/package.json

@@ -1,6 +1,6 @@
 {
   "name": "angular2-baidu-map",
-  "version": "4.3.1",
+  "version": "4.3.2",
   "license": "GPL-3.0",
   "description": "Angular2 component for Baidu map",
   "author": "Howard.Zuo",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "angular2-baidu-map",
-  "version": "4.3.1",
+  "version": "4.3.2",
   "license": "GPL-3.0",
   "scripts": {
     "start": "ng serve",
@@ -16,20 +16,20 @@
     "@angular/platform-browser": "^5.2.11",
     "@angular/platform-browser-dynamic": "^5.2.11",
     "@angular/router": "^5.2.11",
-    "core-js": "^2.5.6",
-    "rxjs": "^5.5.10",
+    "core-js": "^2.5.7",
+    "rxjs": "^5.5.11",
     "zone.js": "^0.8.26"
   },
   "devDependencies": {
     "@angular/cli": "^1.7.4",
     "@angular/compiler-cli": "^5.2.11",
-    "@types/node": "^6.0.110",
+    "@types/node": "^10.3.4",
     "codelyzer": "^4.3.0",
     "highlight.js": "^9.12.0",
-    "ng-packagr": "^2.4.5",
-    "prettier": "^1.12.1",
-    "tslint": "~5.9.1",
-    "tslint-config-prettier": "^1.12.0",
+    "ng-packagr": "^3.0.3",
+    "prettier": "^1.13.5",
+    "tslint": "~5.10.0",
+    "tslint-config-prettier": "^1.13.0",
     "tslint-plugin-prettier": "^1.3.0",
     "typescript": "~2.6.2"
   }