fix(dicomMessage): to handle undefined return value

Author: sedghi

package.json

@@ -12,6 +12,7 @@
     "build": "rollup -c",
     "build:examples": "npm run build && npx cpx 'build/**/*.{js,map}' examples/js",
     "start": "rollup -c -w",
+    "dev": "rollup -c -w",
     "format": "prettier --write 'src/**/*.js' 'test/**/*.js'",
     "format:check": "prettier --check 'src/**/*.js' 'test/**/*.js'",
     "lint": "eslint --fix 'src/**/*.js' 'test/**/*.js'"

src/DicomMessage.js

@@ -383,7 +383,7 @@ class DicomMessage {
                 length,
                 syntax,
                 options
-            );
+            ) || {};
             if (!vr.isBinary() && singleVRs.indexOf(vr.type) == -1) {
                 rawValues = rawValue;
                 values = value;