Implemented merror tag use cases

__test__/index.test.ts

@@ -1045,4 +1045,24 @@ describe('#convert', () => {
       });
     });
   });
+
+  describe('given math string with merror tag', () => {
+    test('convert merror placing its content inside \\color{red}', () => {
+      const mathml = `
+        <root>
+          <math>
+            <merror>
+              <mi>2</mi>
+              <mo>+</mo>
+              <mi>2</mi>
+            </merror>
+          </math>
+        </root>
+      `;
+
+      const result = MathMLToLaTeX.convert(mathml);
+
+      expect(result).toBe('\\color{red}{2 + 2}');
+    });
+  });
 });

src/converters/mathml-interfaces-to-latex/mathml-tag-to-latex/Dispatcher.ts

@@ -12,6 +12,7 @@ import {
   GenericContentWrapperTag,
   MAction,
   MEnclose,
+  MError,
 } from './mathml-tags';
 
 export class Dispatcher {
@@ -51,6 +52,8 @@ export class Dispatcher {
         return new MAction(this._value, this._attributes, this._children);
       case 'menclose':
         return new MEnclose(this._value, this._attributes, this._children);
+      case 'merror':
+        return new MError(this._value, this._attributes, this._children);
       case 'mrow':
       case 'mpadded':
         return new GenericContentWrapperTag(this._name, this._value, this._attributes, this._children);

src/converters/mathml-interfaces-to-latex/mathml-tag-to-latex/mathml-tags/MError.ts

@@ -0,0 +1,11 @@
+import { MathMLTag } from './MathMLTag';
+
+export class MError extends MathMLTag {
+  constructor(value: string, attributes: Record<string, string>, children: MathMLTag[]) {
+    super('merror', value, attributes, children);
+  }
+
+  convert(): string {
+    return `\\color{red}{${this._mapChildrenToLaTeX().join(' ')}}`;
+  }
+}

src/converters/mathml-interfaces-to-latex/mathml-tag-to-latex/mathml-tags/index.ts

@@ -11,3 +11,4 @@ export { MRoot } from './MRoot';
 export { GenericContentWrapperTag } from './GenericContentWrapperTag';
 export { MAction } from './MAction';
 export { MEnclose } from './MEnclose';
+export { MError } from './MError';