feature(user-menu) improve error handling

client/modules/user-menu/parse-error.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const isNumber = (a) => typeof a === 'number';
+
+module.exports = (error) => {
+    const {
+        lineNumber,
+        columnNumber,
+    } = error;
+    
+    if (isNumber(lineNumber) && isNumber(columnNumber))
+        return [
+            lineNumber,
+            columnNumber,
+        ];
+    
+    const before = error.stack.indexOf('>');
+    const str = error.stack.slice(before + 1);
+    const after = str.indexOf(')');
+    const newStr = str.slice(1, after);
+    
+    const [line, column] = newStr.split(':');
+    
+    return [
+        Number(line),
+        Number(column),
+    ];
+};
+