hono-linebot-middleware

LINE Bot SDK middleware for Hono - Simple webhook handler for LINE Bot.

Installation

npm i @hono/node-server @line/bot-sdk 

npm install hono-linebot-middleware

Usage

import { Hono } from 'hono'
import * as line from '@line/bot-sdk'
import { lineBotMiddleware } from 'hono-linebot-middleware'

const app = new Hono()

// LINE SDK client
const client = new line.messagingApi.MessagingApiClient({
  channelAccessToken: 'YOUR_CHANNEL_ACCESS_TOKEN'
})

// Message handler
async function handleEvent(event: line.WebhookEvent) {
  if (event.type !== 'message' || event.message.type !== 'text') return

  await client.replyMessage({
    replyToken: event.replyToken,
    messages: [{
      type: 'text',
      text: `Echo: ${event.message.text}`
    }]
  })
}

// Webhook endpoint
app.post('/callback', lineBotMiddleware({ 
  channelSecret: 'YOUR_CHANNEL_SECRET' 
}), async (c) => {
  try {
    const { events } = c.get('body')
    await Promise.all(events.map(handleEvent))
    return c.json({ status: 'success' })
  } catch (err) {
    console.error(err)
    return c.json({ status: 'error' }, 500)
  }
})

Requirements

Node.js v18 or later Hono v4.0.0 or later @line/bot-sdk v9.5.0 or later

Configuration

The middleware requires the following LINE Bot credentials:

• channelSecret: Your LINE Bot channel secret
• channelAccessToken: Your LINE Bot channel access token

You can get these credentials from the LINE Developers Console.

License

MIT

Author

[@n0bisuke]