Patrick G
LightNews LightNews
relevantelement.bsky.social
Patrick G
@relevantelement.bsky.social
95 followers 940 following 19 posts
Web Dev, Data, Marketing
Posts Replies Media Videos
relevantelement.bsky.social
Complete working example:
July 21, 2025 at 2:53 PM
relevantelement.bsky.social
The runtime that makes this work:
July 21, 2025 at 2:53 PM
relevantelement.bsky.social
JavaScript generators let us flip this: instead of passing dependencies down, functions pull what they need:
// Define what can be requested const getDB = () => (context) => context.db; const getLogger = () => (context) => context.logger; const getEmailer = () => (context) => context.emailer; // Pull only what you need async function* notifyUser(user) { const emailer = yield getEmailer(); // Pull emailer when needed return emailer.send(user.email); }
July 21, 2025 at 2:53 PM
relevantelement.bsky.social
The problem: dependency passing through function chains
async function handleRequest(req, res, db, logger, emailer) { // Only uses logger, but must accept all deps to pass down logger.info('Request received'); return processUser(req.userId, db, logger, emailer); } async function processUser(userId, db, logger, emailer) { // Still doesn't use emailer const user = await db.getUser(userId); return notifyUser(user, db, logger, emailer); } async function notifyUser(user, db, logger, emailer) { // Finally uses emailer! return emailer.send(user.email); }
July 21, 2025 at 2:53 PM
relevantelement.bsky.social
I don't think enough people know scoped styles are built into the browser now...
November 22, 2024 at 1:41 PM