feat: add munderover tag use case

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

@@ -8,7 +8,6 @@ import {
   MFenced,
   MFrac,
   MRoot,
-  GenericContentWrapperTag,
   MAction,
   MEnclose,
   MError,
@@ -17,6 +16,8 @@ import {
   MSub,
   MSubsup,
   MText,
+  MUnderover,
+  GenericContentWrapperTag,
   GenericUnderOverTag,
 } from './mathml-tags';
 
@@ -67,6 +68,8 @@ export class Dispatcher {
         return new MSubsup(this._value, this._attributes, this._children);
       case 'mtext':
         return new MText(this._value, this._attributes, this._children);
+      case 'munderover':
+        return new MUnderover(this._value, this._attributes, this._children);
       case 'mover':
       case 'munder':
         return new GenericUnderOverTag(this._name, this._value, this._attributes, this._children);

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

@@ -0,0 +1,18 @@
+import { MathMLTag } from './MathMLTag';
+import { InvalidNumberOfChild } from '../../../../errors';
+
+export class MUnderover extends MathMLTag {
+  constructor(value: string, attributes: Record<string, string>, children: MathMLTag[]) {
+    super('munderover', value, attributes, children);
+  }
+
+  convert(): string {
+    if (this._children.length !== 3) throw new InvalidNumberOfChild(this._name, 3, this._children.length);
+
+    const base = this._children[0].convert();
+    const underContent = this._children[1].convert();
+    const overContent = this._children[2].convert();
+
+    return `${base}_{${underContent}}^{${overContent}}`;
+  }
+}

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

@@ -7,7 +7,6 @@ export { MSqrt } from './MSqrt';
 export { MFenced } from './MFenced';
 export { MFrac } from './MFrac';
 export { MRoot } from './MRoot';
-export { GenericContentWrapperTag } from './GenericContentWrapperTag';
 export { MAction } from './MAction';
 export { MEnclose } from './MEnclose';
 export { MError } from './MError';
@@ -16,4 +15,6 @@ export { MSup } from './MSup';
 export { MSub } from './MSub';
 export { MSubsup } from './MSubsup';
 export { MText } from './MText';
+export { MUnderover } from './MUnderover';
+export { GenericContentWrapperTag } from './GenericContentWrapperTag';
 export { GenericUnderOverTag } from './GenericUnderOverTag';