Delete your discord messages in a channel older than a specific date

delete.js

// Lifted partially from https://gist.github.com/orion-v/95cb48fa73808cdc5c589fe415cc65f1
// and https://github.com/vegeta897/snow-stamp/blob/main/src/convert.js#L2

const DISCORD_EPOCH = 1420070400000

function dateToPostId(date) {
	return (date - DISCORD_EPOCH) * 4194304
	//return new Date(snowflake / 4194304 + epoch)
}

async function clearMessages(date) {
	const server = "fill this in "; // server id number
	const author = "fill this in "; // user id number

	const authToken = "fill this in ";
	const headers = { 'Authorization': authToken, 'Content-Type': 'application/json' };
	const baseURL = `https://discord.com/api/v9/channels`;
	let max_id =  dateToPostId(date)
	let searchURL = `https://discord.com/api/v9/guilds/${server}/messages/search?author_id=${author}&max_id=${max_id}`;

	console.log("date " + date + " becomes max_id " + max_id + ".")
	
	let clock = 0;
	let interval = 10000;
	function delay(duration) {
		return new Promise((resolve, reject) => {
			setTimeout(() => resolve(), duration);
		});
	}

	const response = await fetch(searchURL, {headers});
	const json = await response.json();
	console.log("There are " + json.total_results + " messages left to delete.");
	await Array.from(json.messages).map(message => {
		message.forEach(async function(item) {
			if(item.hit == true) {
				await delay(clock += interval);
				await fetch(`${baseURL}/${item.channel_id}/messages/${item.id}`, { headers, method: 'DELETE' });
			}
		});
	});

	if (json.total_results > 0) { 
		delay(clock += interval).then(() => { clearMessages(date); }); 
	} else {
		console.log("Finished deleting messages")
	};
}
clearMessages(Date.parse('01 Nov 2021 00:00:00 GMT'));