Slack notification by "FILE_VERSION_UPDATE" of Figma webhook event at AWS Lambda.

index.js

const https = require('https');
const endpointHost = 'hooks.slack.com';
const endpointPath = 'Your Slack webhook URL Path';

exports.handler = async (event) => {
  const body = JSON.parse(event.body);
  const postData = JSON.stringify({
  "text": "Update Version History in Figma",
  "blocks": [
    {
      "type": "section",
      "text": {
        "type": "mrkdwn",
        "text": ":figma: Update Version History in Figma"
      }
    },
    {
      "type": "section",
      "text": {
        "type": "mrkdwn",
        "text": `*<https://www.figma.com/file/${body.file_key}/${body.file_name}|${body.label}>*`
      }
    },
    {
      "type": "context",
      "elements": [
        {
          "type": "plain_text",
          "text": `:page_facing_up: File: ${body.file_name} | Updated by ${body.triggered_by.handle}`,
          "emoji": true
        }
      ]
    },
    {
      "type": "divider"
    },
    {
      "type": "section",
      "text": {
        "type": "mrkdwn",
        "text": `> ${body.description || 'No description'}`
      }
    }
  ]
  });

  const options = {
    hostname: endpointHost,
    port: 443,
    path: endpointPath,
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Content-Length': Buffer.byteLength(postData)
    }
  };

  const promise = new Promise((resolve, reject) => {
    const req = https.request(options, (res) => {
      console.log('statusCode:', res.statusCode);
      console.log('headers:', res.headers);
    
      res.on('data', (chunk) => {
        console.log(`Body: ${chunk}`);
      });
      res.on('end', () => {
        console.log('FINISH');
        resolve();
      });
    });
    
    req.on('error', (e) => {
      reject(e);
    });
    
    req.write(postData);
    req.end();
  });
  return promise;
};