feat: Initial clean release of CHM

packages/app-cli/app/utils/iterateStdin.ts

@@ -0,0 +1,54 @@
+import { createInterface } from 'readline/promises';
+
+const iterateStdin = async function*(prompt: string) {
+	let nextLineListeners: (()=> void)[] = [];
+	const dispatchAllListeners = () => {
+		const listeners = nextLineListeners;
+		nextLineListeners = [];
+		for (const listener of listeners) {
+			listener();
+		}
+	};
+
+	const rl = createInterface({
+		input: process.stdin,
+		output: process.stdout,
+	});
+	rl.setPrompt(prompt);
+
+	let buffer: string[] = [];
+	rl.on('line', (line) => {
+		buffer.push(line);
+		dispatchAllListeners();
+	});
+
+	let done = false;
+	rl.on('close', () => {
+		done = true;
+		dispatchAllListeners();
+	});
+
+	const readNextLines = () => {
+		return new Promise<string|null>(resolve => {
+			if (done) {
+				resolve(null);
+			} else if (buffer.length > 0) {
+				resolve(buffer.join('\n'));
+				buffer = [];
+			} else {
+				nextLineListeners.push(() => {
+					resolve(buffer.join('\n'));
+					buffer = [];
+				});
+			}
+		});
+	};
+
+	while (!done) {
+		rl.prompt();
+		const lines = await readNextLines();
+		yield lines;
+	}
+};
+
+export default iterateStdin;