第一版

lib/keyboard.js

@@ -0,0 +1,18 @@
+import readline from "readline";
+
+let initialized = false;
+
+export function initKeypress() {
+  if (!initialized) {
+    readline.emitKeypressEvents(process.stdin);
+    initialized = true;
+  }
+  process.stdin.removeAllListeners("keypress");
+  if (process.stdin.isTTY) {
+    process.stdin.setRawMode(true);
+  }
+}
+
+export function onKey(handler) {
+  process.stdin.on("keypress", handler);
+}