fix(mdx-variable-regex): user variable display in SuperHub read mode (#250)

Author: HugoHSun

__tests__/index.test.jsx

@@ -279,4 +279,11 @@ describe('MDX_VARIABLE_REGEXP', () => {
     expect('{user.what_the\rfuck}').not.toMatch(new RegExp(MDX_VARIABLE_REGEXP));
     expect('{user.what_the\r\nfuck}').not.toMatch(new RegExp(MDX_VARIABLE_REGEXP));
   });
+
+  it('should NOT match JS template literals without a dot after user', () => {
+    // Bug case: {userXYZ} should not match as if it were {user.XYZ}
+    expect('{userEndpoint}').not.toMatch(new RegExp(MDX_VARIABLE_REGEXP));
+    expect('{userXYZ}').not.toMatch(new RegExp(MDX_VARIABLE_REGEXP));
+    expect('{baseUrl}').not.toMatch(new RegExp(MDX_VARIABLE_REGEXP));
+  });
 });

index.jsx

@@ -204,7 +204,7 @@ module.exports.VARIABLE_REGEXP = /(?:\\)?<<((?:(?![\r\n])[-_\p{L}:.\s\d])+)(?:\\
  * @see {@link https://stackoverflow.com/a/6926184}
  */
 module.exports.MDX_VARIABLE_REGEXP =
-  /(\\)?\{user.([$_\p{L}][$_\p{L}\p{Mn}\p{Mc}\p{Nd}\p{Pc}\u200C\u200D]*)(\\)?\}/iu.source;
+  /(\\)?\{user\.([$_\p{L}][$_\p{L}\p{Mn}\p{Mc}\p{Nd}\p{Pc}\u200C\u200D]*)(\\)?\}/iu.source;
 
 module.exports.VariablesContext = VariablesContext;
 module.exports.SelectedAppContext = SelectedAppContext;