use async API

danvk · Jan 17, 2024 · 80d5998 · 80d5998
1 parent 522031c
commit 80d5998
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/src/main.ts b/src/main.ts
@@ -1,3 +1,4 @@
+import { once } from "node:events";
 import * as fs from "node:fs/promises";
 import { createInterface } from "node:readline";
 
@@ -25,7 +26,8 @@ export function resetErrors() {
  hadRuntimeError = false;
 }
 
-export function runPrompt(interpreter: Interpreter) {
+export async function runPrompt(interpreter: Interpreter) {
+ // https://nodejs.org/api/readline.html#example-tiny-cli
  const rl = createInterface({
  input: process.stdin,
  output: process.stdout,
@@ -42,6 +44,8 @@ export function runPrompt(interpreter: Interpreter) {
  resetErrors();
  rl.prompt();
  });
+
+ await once(rl, "close");
 }
 
 let hadError = false;
@@ -116,6 +120,6 @@ export async function main() {
  if (args.length == 1) {
  await runFile(interpreter, args[0]);
  } else {
- runPrompt(interpreter);
+ await runPrompt(interpreter);
  }
 }