prerender lambda@edge

origin-request.js

'use strict';

exports.handler = (event, context, callback) => {
  const request = event.Records[0].cf.request;
  const headers = request.headers;
  let SHOULD_PRERENDER = false;
  let IsBot = request.headers['x-is-bot'][0].value === 'true';
    
  SHOULD_PRERENDER = IsBot;

  request.headers['x-prerender-uri'] = [{
    key: 'x-prerender-uri',
    value: request.uri
  }];
  
  request.headers['x-should-prerender'] = [{
    key: 'x-should-prerender',
    value: SHOULD_PRERENDER.toString()
  }];
  callback(null, request);
};