Fix #5

index.js

@@ -4,8 +4,8 @@ const babelCore = require("@babel/core");
 const Module = require("module").Module;
 const fs = require("fs");
 
-function transpile(code) {
+function transpile(code, filename) {
-	return babelCore.transformSync(code, {
+	return babelCore.transformSync(code, {filename,
 		plugins: [
 			require.resolve("@babel/plugin-proposal-export-namespace-from"),
 			require.resolve("@babel/plugin-transform-modules-commonjs")
@@ -28,7 +28,7 @@ module.exports = {
 				if (error.code === "ERR_REQUIRE_ESM") {
 					// NOTE: We completely bypass the default internal loader, as we cannot patch the `type: module` check out of that. Please open a PR if you have a better solution!
 					let code = fs.readFileSync(filename, "utf8");
-					let transpiledCode = transpile(code);
+					let transpiledCode = transpile(code, filename);
 					mod._compile(transpiledCode.code, filename);
 				} else {
 					throw error;