fix(repl): error on import statement (#56)

Author: privatenumber

src/repl.ts

@@ -17,7 +17,14 @@ const preEval: REPLEval = async function (code, context, filename, callback) {
 	const transformed = await transform(
 		code,
 		filename,
-		{ loader: 'ts' },
+		{
+			loader: 'ts',
+			tsconfigRaw: {
+				compilerOptions: {
+					preserveValueImports: true,
+				},
+			},
+		},
 	).catch(
 		(error) => {
 			console.log(error.message);

tests/specs/repl.ts

@@ -30,5 +30,27 @@ export default testSuite(async ({ describe }) => {
 
 			tsxProcess.kill();
 		}, 5000);
+
+		test('errors on import statement', async () => {
+			const tsxProcess = tsx({
+				args: [],
+			});
+
+			await new Promise<void>((resolve) => {
+				tsxProcess.stdout!.on('data', (data: Buffer) => {
+					const chunkString = data.toString();
+
+					if (chunkString.includes('SyntaxError: Cannot use import statement inside the Node.js REPL')) {
+						return resolve();
+					}
+
+					if (chunkString.includes('> ')) {
+						tsxProcess.stdin?.write('import fs from "fs"\n');
+					}
+				});
+			});
+
+			tsxProcess.kill();
+		}, 2000);
 	});
 });