[Fix] require-default-props: avoid a crash when function has no props param

Author: Noah Negin-Ulster

CHANGELOG.md

@@ -16,13 +16,15 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 * [`jsx-key`]: avoid a crash on a non-array node.body from [#3320][] ([#3328][] @ljharb)
 * [`display-name`]: fix false positive for assignment of function returning null ([#3331][] @apbarrero)
 * [`display-name`]: fix identifying `_` as a capital letter ([#3335][] @apbarrero)
+* [`require-default-props`]: avoid a crash when function has no props param ([#3350][] @noahnu)
 
 ### Changed
 * [Refactor] [`jsx-indent-props`]: improved readability of the checkNodesIndent function ([#3315][] @caroline223)
 * [Tests] [`jsx-indent`], [`jsx-one-expression-per-line`]: add passing test cases ([#3314][] @ROSSROSALES)
 * [Refactor] `boolean-prop-naming`, `jsx-indent`: avoid assigning to arguments ([#3316][] @caroline223)
 * [Docs] `sort-comp`: add class component examples ([#3339][] @maurer2)
 
+[#3350]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3350
 [#3339]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3339
 [#3335]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3335
 [#3331]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3331

lib/rules/require-default-props.js

@@ -125,6 +125,10 @@ module.exports = {
       const props = componentNode.params[0];
       const propTypes = declaredPropTypes;
 
+      if (!props) {
+        return;
+      }
+
       if (props.type === 'Identifier') {
         const hasOptionalProp = values(propTypes).some((propType) => !propType.isRequired);
         if (hasOptionalProp) {

tests/lib/rules/require-default-props.js

@@ -361,6 +361,15 @@ ruleTester.run('require-default-props', rule, {
       `,
       options: [{ functions: 'defaultArguments' }],
     },
+    {
+      code: `
+        const NoPropsComponent = function () {
+          return <div>Hello, world!</div>;
+        }
+        NoPropsComponent.propTypes = {};
+      `,
+      options: [{ functions: 'defaultArguments' }],
+    },
 
     // stateless components as arrow function expressions
     {