Add simple variable assignment expression matching to object literal member to handle cases where the destructuring parameters of arrow are span multiple lines

Fixes #510

Author: sheetalkamat

TypeScript.YAML-tmLanguage

@@ -1639,6 +1639,11 @@ repository:
       match: ([_$[:alpha:]][_$[:alnum:]]*)\s*(?=,|\}|$)
       captures:
         '1': { name: variable.other.readwrite.ts }
+    - name: meta.object.member.ts
+      begin: (?=[_$[:alpha:]][_$[:alnum:]]*\s*=)
+      end: (?=,|\}|$)
+      patterns:
+      - include: '#expression'
     - include: '#object-member-body'
     - include: '#punctuation-comma'
 

TypeScript.tmLanguage

@@ -4491,6 +4491,21 @@
               </dict>
             </dict>
           </dict>
+          <dict>
+            <key>name</key>
+            <string>meta.object.member.ts</string>
+            <key>begin</key>
+            <string>(?=[_$[:alpha:]][_$[:alnum:]]*\s*=)</string>
+            <key>end</key>
+            <string>(?=,|\}|$)</string>
+            <key>patterns</key>
+            <array>
+              <dict>
+                <key>include</key>
+                <string>#expression</string>
+              </dict>
+            </array>
+          </dict>
           <dict>
             <key>include</key>
             <string>#object-member-body</string>

TypeScriptReact.tmLanguage

@@ -4437,6 +4437,21 @@
               </dict>
             </dict>
           </dict>
+          <dict>
+            <key>name</key>
+            <string>meta.object.member.tsx</string>
+            <key>begin</key>
+            <string>(?=[_$[:alpha:]][_$[:alnum:]]*\s*=)</string>
+            <key>end</key>
+            <string>(?=,|\}|$)</string>
+            <key>patterns</key>
+            <array>
+              <dict>
+                <key>include</key>
+                <string>#expression</string>
+              </dict>
+            </array>
+          </dict>
           <dict>
             <key>include</key>
             <string>#object-member-body</string>