feat: implement a resolver that supports exports

package.json

@@ -48,6 +48,7 @@
     "eslint": "^8.57.0 || ^9.0.0"
   },
   "dependencies": {
+    "@dual-bundle/import-meta-resolve": "^4.1.0",
     "@types/doctrine": "^0.0.9",
     "@typescript-eslint/scope-manager": "^8.1.0",
     "@typescript-eslint/utils": "^8.1.0",

src/index.ts

@@ -72,6 +72,7 @@ import type {
   PluginFlatConfig,
 } from './types'
 import { importXResolverCompat } from './utils'
+import { createNodeResolver } from './node-resolver'
 
 const rules = {
   'no-unresolved': noUnresolved,
@@ -183,4 +184,5 @@ export = {
   flatConfigs,
   rules,
   importXResolverCompat,
+  createNodeResolver
 }

src/node-resolver.ts

@@ -0,0 +1,60 @@
+import { fileURLToPath, pathToFileURL } from "url";
+import type { NewResolver } from "./types";
+
+import type { ErrnoException } from '@dual-bundle/import-meta-resolve' with { "resolution-mode": "import" };
+
+const importMetaResolveExports: typeof import('@dual-bundle/import-meta-resolve', { with: { "resolution-mode": "import" } }) = require('@dual-bundle/import-meta-resolve');
+const { moduleResolve } = importMetaResolveExports;
+
+interface NodeResolverOptions {
+  /**
+   * The import conditions the resolver will used when reading the exports map from "package.json"
+   * @default new Set(['default', 'module', 'import', 'require'])
+   */
+  conditions?: Set<string>;
+  /**
+   * keep symlinks instead of resolving them
+   * @default false
+   */
+  preserveSymlinks?: boolean;
+}
+
+const assertErrNoException = (error: unknown): error is ErrnoException => {
+  return (
+    typeof error === 'object' &&
+    error !== null &&
+    'code' in error &&
+    typeof error.code === 'string'
+  );
+}
+
+export function createNodeResolver({
+  conditions = new Set(['default', 'module', 'import', 'require']),
+  preserveSymlinks = false,
+}: NodeResolverOptions = {}): NewResolver {
+  return {
+    interfaceVersion: 3,
+    name: 'eslint-plugin-import-x built-in node resolver',
+    resolve: (modulePath, sourceFile) => {
+      try {
+        const found = moduleResolve(
+          modulePath,
+          pathToFileURL(sourceFile),
+          conditions,
+          preserveSymlinks
+        );
+        return {
+          found: true,
+          path: fileURLToPath(found),
+        };
+      } catch (error) {
+        if (assertErrNoException(error) && error.code === 'ERR_MODULE_NOT_FOUND') {
+          return {
+            found: false,
+          }
+        }
+        throw error;
+      }
+    }
+  }
+}

yarn.lock

@@ -1375,6 +1375,11 @@
   dependencies:
     "@jridgewell/trace-mapping" "0.3.9"
 
+"@dual-bundle/import-meta-resolve@^4.1.0":
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/@dual-bundle/import-meta-resolve/-/import-meta-resolve-4.1.0.tgz#519c1549b0e147759e7825701ecffd25e5819f7b"
+  integrity sha512-+nxncfwHM5SgAtrVzgpzJOI1ol0PkumhVo469KCf9lUi21IGcY90G98VuHm9VRrUypmAzawAHO9bs6hqeADaVg==
+
 "@emnapi/core@^1.1.0":
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/@emnapi/core/-/core-1.1.0.tgz#6b552ea3d2b303965c52661c05976d3072ccb6a3"