solver.js

async function submitForm(page){
	/*
	page.evaluate code to process the page is here
	return 'success' on completion
	*/
}

async function solve (page) {
  try {
	page.on('pageerror', (err) => {
        console.log('error')  //should throw error or promise.reject that can be catch below as 'error' or return error
    });

	/*
	Code to check if site has blocked us
	When class 'rc-dos-body' is added in the iframe DOM, we are blocked
	*/

	await page.evaluate(() => {		document.querySelector('iframe[src*="api2/bframe"]').contentWindow.document.addEventListener("DOMSubtreeModified", function(e) {
			if(e.target.querySelector('.rc-dos-body')){
				throw new Error('block');  //triggers 'pageerror' event
			}
		});
	});

	const result = await submitForm(page)  //returns success
	return result;

  } catch (e) {
    return 'error';
  }
}

module.exports = solve