fix(check-types, no-undefined-types): safer optional chaining

Author: brettz9

src/jsdocUtils.js

@@ -677,12 +677,12 @@ const tagMissingRequiredTypeOrNamepath = (tag, tagMap = tagStructure) => {
  * @returns {boolean}
  */
 const isNewPromiseExpression = (node) => {
-  return node.type === 'NewExpression' && node.callee.type === 'Identifier' &&
+  return node && node.type === 'NewExpression' && node.callee.type === 'Identifier' &&
     node.callee.name === 'Promise';
 };
 
 const isVoidPromise = (node) => {
-  return node.typeParameters?.params?.[0]?.type === 'TSVoidKeyword';
+  return node?.typeParameters?.params?.[0]?.type === 'TSVoidKeyword';
 };
 
 /**
@@ -716,7 +716,7 @@ const hasReturnValue = (node, promFilter) => {
   case 'FunctionExpression':
   case 'FunctionDeclaration':
   case 'ArrowFunctionExpression': {
-    return node.expression && (!isNewPromiseExpression(node.body) || !isVoidPromise(node?.body)) ||
+    return node.expression && (!isNewPromiseExpression(node.body) || !isVoidPromise(node.body)) ||
       hasReturnValue(node.body, promFilter);
   }
 

src/rules/checkTypes.js

@@ -205,7 +205,7 @@ export default iterateJsdoc(({
           //   parent object without a parent match (and not
           //   `unifyParentAndChildTypeChecks`) and we don't want
           //   `object<>` given TypeScript issue https://github.com/microsoft/TypeScript/issues/20555
-          parentNode?.elements.length && (
+          parentNode?.elements?.length && (
             parentNode?.left?.type === 'JsdocTypeName' &&
             parentNode?.left?.value === 'Object'
           )

src/rules/noUndefinedTypes.js

@@ -126,7 +126,7 @@ export default iterateJsdoc(({
 
   // In modules, including Node, there is a global scope at top with the
   //  Program scope inside
-  const cjsOrESMScope = globalScope.childScopes[0]?.block.type === 'Program';
+  const cjsOrESMScope = globalScope.childScopes[0]?.block?.type === 'Program';
 
   const allDefinedTypes = new Set(globalScope.variables.map(({
     name,