Try not to use require for modules due to breaking change in Node 22.…

…12: https://github.com/nodejs/node/releases/tag/v22.12.0.

markdownlint-cli2.js

@@ -97,11 +97,18 @@ const importOrRequireResolve = async (dirOrDirs, id, noRequire) => {
     const dirs = Array.isArray(dirOrDirs) ? dirOrDirs : [ dirOrDirs ];
     const expandId = expandTildePath(id);
     const errors = [];
+    // Try to load via require(...)
     try {
-      return resolveAndRequire(dynamicRequire, expandId, dirs);
+      const isModule = /\.mjs$/iu.test(expandId);
+      if (!isModule) {
+        // Try not to use require for modules due to breaking change in Node 22.12:
+        // https://github.com/nodejs/node/releases/tag/v22.12.0
+        return resolveAndRequire(dynamicRequire, expandId, dirs);
+      }
     } catch (error) {
       errors.push(error);
     }
+    // Try to load via import(...)
     try {
       // eslint-disable-next-line n/no-unsupported-features/node-builtins
       const isURL = !pathDefault.isAbsolute(expandId) && URL.canParse(expandId);
@@ -114,6 +121,7 @@ const importOrRequireResolve = async (dirOrDirs, id, noRequire) => {
     } catch (error) {
       errors.push(error);
     }
+    // Give up
     throw new AggregateError(
       errors,
       `Unable to require or import module '${id}'.`