fix(repl): suppress autocomplete transformation errors (#205)

Author: privatenumber

src/patch-repl.ts

@@ -4,28 +4,27 @@ import { transform } from '@esbuild-kit/core-utils';
 function patchEval(nodeRepl: REPLServer) {
 	const { eval: defaultEval } = nodeRepl;
 	const preEval: REPLEval = async function (code, context, filename, callback) {
-		const transformed = await transform(
-			code,
-			filename,
-			{
-				loader: 'ts',
-				tsconfigRaw: {
-					compilerOptions: {
-						preserveValueImports: true,
+		try {
+			const transformed = await transform(
+				code,
+				filename,
+				{
+					loader: 'ts',
+					tsconfigRaw: {
+						compilerOptions: {
+							preserveValueImports: true,
+						},
+					},
+					define: {
+						require: 'global.require',
 					},
 				},
-				define: {
-					require: 'global.require',
-				},
-			},
-		).catch(
-			(error) => {
-				console.log(error.message);
-				return { code: '\n' };
-			},
-		);
+			);
+
+			code = transformed.code;
+		} catch {}
 
-		return defaultEval.call(this, transformed.code, context, filename, callback);
+		return defaultEval.call(this, code, context, filename, callback);
 	};
 
 	// @ts-expect-error overwriting read-only property

tests/specs/repl.ts

@@ -57,6 +57,35 @@ export default testSuite(async ({ describe }, node: NodeApis) => {
 			tsxProcess.kill();
 		}, 40_000);
 
+		test('supports incomplete expression in segments', async () => {
+			const tsxProcess = node.tsx({
+				args: ['--interactive'],
+			});
+
+			const commands = [
+				['> ', '('],
+				['... ', '1'],
+				['... ', ')'],
+				['1'],
+			];
+
+			let [expected, nextCommand] = commands.shift()!;
+			await new Promise<void>((resolve) => {
+				tsxProcess.stdout!.on('data', (data: Buffer) => {
+					const chunkString = data.toString();
+					if (chunkString.includes(expected)) {
+						if (nextCommand) {
+							tsxProcess.stdin!.write(`${nextCommand}\r`);
+							[expected, nextCommand] = commands.shift()!;
+						} else {
+							resolve();
+						}
+					}
+				});
+			});
+			tsxProcess.kill();
+		}, 40_000);
+
 		test('errors on import statement', async () => {
 			const tsxProcess = node.tsx({
 				args: ['--interactive'],