라인 echo-bot 테스트

+const line = require('@line/bot-sdk');
+const express = require('express');
+
+// create LINE SDK config from env variables
+const config = {
+  channelAccessToken: 'mnny0MJSezgBXzR9C3Ddcc1Csdb7Y9jkvy2nqV5saOmvR2YOJ1/kj/2M0CNsLA+57B2qDpdUQ7WbCTtIKx/LAJ6Kwfop4tX3up7EM8H9EZK1td6GMbhhCb6wvUFVdb1PcTO4joCv8mspd3ubo8a+gAdB04t89/1O/w1cDnyilFU=',
+  channelSecret: 'bde77633a16fc5bfbd532d5990c6170e',
+};
+
+// create LINE SDK client
+const client = new line.Client(config);
+
+// create Express app
+// about Express itself: https://expressjs.com/
+const app = express();
+
+// register a webhook handler with middleware
+// about the middleware, please refer to doc
+app.post('/webhook', line.middleware(config), (req, res) => {
+  Promise
+    .all(req.body.events.map(handleEvent))
+    .then((result) => res.json(result))
+    .catch((err) => {
+      console.error(err);
+      res.status(500).end();
+    });
+});
+
+// event handler
+function handleEvent(event) {
+  if (event.type !== 'message' || event.message.type !== 'text') {
+    // ignore non-text-message event
+    return Promise.resolve(null);
+  }
+
+  // create a echoing text message
+  const echo = { type: 'text', text: event.message.text };
+
+  // use reply API
+  return client.replyMessage(event.replyToken, echo);
+}
+
+
+app.listen(3000, function () {
+  console.log('Linebot listening on port 3000!');
+});