[Fix] order: resolve undefined property access issue when using named ordering

Fixes #3159.

Author: Xunnamius

Diff for: CHANGELOG.md

@@ -18,6 +18,7 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 - [`no-unused-modules`]: provide more meaningful error message when no .eslintrc is present ([#3116], thanks [@michaelfaith])
 - configs: added missing name attribute for eslint config inspector ([#3151], thanks [@NishargShah])
 - [`order`]: ensure arcane imports do not cause undefined behavior ([#3128], thanks [@Xunnamius])
+- [`order`]: resolve undefined property access issue when using `named` ordering ([#3166], thanks [@Xunnamius])
 
 ### Changed
 - [Docs] [`extensions`], [`order`]: improve documentation ([#3106], thanks [@Xunnamius])
@@ -1173,6 +1174,7 @@ for info on changes for earlier releases.
 
 [`memo-parser`]: ./memo-parser/README.md
 
+[#3166]: https://github.com/import-js/eslint-plugin-import/pull/3166
 [#3151]: https://github.com/import-js/eslint-plugin-import/pull/3151
 [#3138]: https://github.com/import-js/eslint-plugin-import/pull/3138
 [#3129]: https://github.com/import-js/eslint-plugin-import/pull/3129

Diff for: src/rules/order.js

@@ -1219,7 +1219,9 @@ module.exports = {
               if (node.right.type === 'ObjectExpression') {
                 for (let i = 0; i < node.right.properties.length; i++) {
                   if (
-                    node.right.properties[i].key.type !== 'Identifier'
+                    !node.right.properties[i].key
+                    || node.right.properties[i].key.type !== 'Identifier'
+                    || !node.right.properties[i].value
                     || node.right.properties[i].value.type !== 'Identifier'
                   ) {
                     return;

Diff for: tests/src/rules/order.js

@@ -3944,6 +3944,18 @@ context('TypeScript', function () {
               },
             ],
           }),
+          // Ensure the rule doesn't choke and die when right-hand-side AssignmentExpression properties lack a "key" attribute (e.g. SpreadElement)
+          test({
+            code: `
+              // https://prettier.io/docs/en/options.html
+
+              module.exports = {
+                  ...require('@xxxx/.prettierrc.js'),
+              };
+            `,
+            ...parserConfig,
+            options: [{ named: { enabled: true } }],
+          }),
           // Option: sortTypesGroup: true and newlines-between-types: 'always-and-inside-groups' and consolidateIslands: 'inside-groups'
           test({
             code: `