fix: improve import map error (#52)

package.json

@@ -44,7 +44,7 @@
 		"eslint": "^8.24.0",
 		"execa": "^6.1.0",
 		"get-node": "^13.2.0",
-		"manten": "^0.3.0",
+		"manten": "^0.5.0",
 		"pkgroll": "^1.4.0",
 		"semver": "^7.3.7",
 		"source-map-support": "^0.5.21",

src/loaders.ts

@@ -163,12 +163,21 @@ export const resolve: resolve = async function (
 			error instanceof Error
 			&& !recursiveCall
 		) {
-			if ((error as any).code === 'ERR_UNSUPPORTED_DIR_IMPORT') {
-				return await tryDirectory(specifier, context, defaultResolve);
+			const { code } = error as any;
+			if (code === 'ERR_UNSUPPORTED_DIR_IMPORT') {
+				try {
+					return await tryDirectory(specifier, context, defaultResolve);
+				} catch (error_) {
+					if ((error_ as any).code !== 'ERR_PACKAGE_IMPORT_NOT_DEFINED') {
+						throw error_;
+					}
+				}
 			}
 
-			if ((error as any).code === 'ERR_MODULE_NOT_FOUND') {
-				return await tryExtensions(specifier, context, defaultResolve);
+			if (code === 'ERR_MODULE_NOT_FOUND') {
+				try {
+					return await tryExtensions(specifier, context, defaultResolve);
+				} catch {}
 			}
 		}
 

tests/fixtures/package-module/package.json

@@ -1,3 +1,14 @@
 {
-	"type": "module"
+	"type": "module",
+	"imports": {
+		"#directory": "./lib/esm-ext-js",
+
+		"#directory-star": "./lib/esm-ext-js",
+		"#directory-star/*": "./lib/esm-ext-js/*",
+
+		"#file-star": "./lib/ts-ext-ts/index",
+		"#file-star*": "./lib/ts-ext-ts/index*",
+
+		"#non-existent": "./lib/non-existent"
+	}
 }

tests/index.ts

@@ -42,6 +42,10 @@ const nodeVersions = [
 					import('./specs/data'),
 					node,
 				);
+				runTestSuite(
+					import('./specs/import-map'),
+					node,
+				);
 			});
 
 			runTestSuite(