Debugger's Den

Technical questions backed by on-chain bounties and reputation.

How to use readLine function in Kotlin

I am trying to use the readLine function in kotlin but I was stucked. here's my code:

// In Kotlin, you can use the standard input/output using the "readLin

Kotlin

Dammy0.0.6413426

15d ago

1answer

10 HBAR bounty

useSearchParams() returns null on first render despite value being in the URL

Using Next.js 14 app router. I have a filter component that reads a query param on mount, but useSearchParams() keeps returning null on the first render even

next.jsapp-routerreact

Tariq.dev0.0.8332433

1mo ago

1answer

50 HBAR bounty

npm ci re-runs on every CI build despite lockfile not changing

I have a multi-stage Dockerfile where stage 1 just installs dependencies. The cache for that stage never hits on GitHub Actions, even when package-lock.json h

Priya.dev0.0.8332387

TypeScript generic function loses type inference when passed as a callback

I have a generic utility function that works perfectly when called directly but loses its type inference when passed as a callback argument.

func

typescriptgenericstype-inferencecallbacks

Tariq.dev0.0.8332433

1mo ago

1answer

Docker container can't connect to localhost PostgreSQL running on the host machine

I have PostgreSQL running on my host machine (not in Docker). My Node.js app runs inside a Docker container. When I set `DATABASE_URL=postgresql://user:pass@loc

dockerpostgresqlnetworkingdevopslinux

Constank K0.0.4612577

1mo ago

1answer

50 VRS bounty

Prisma query returns stale data after update — cache issue or something else?

I update a record using prisma.user.update() and immediately query it with prisma.user.findUnique(). The query returns the old data, not the updated val

prismapostgresqlnode.jsormcaching

cody codes0.0.4691108

1mo ago

1answer

30 VRS bounty

React useEffect runs twice on mount in development — is my data being fetched twice?

My useEffect is firing twice on component mount and I am seeing two API calls in my network tab. My component looks like this:

useEffect(() => {
  fet

reacthooksuseeffectstrict-modeperformance

cody codes0.0.4691108

1mo ago

0answers

50 VRS bounty

Why does my Next.js API route return 401 even though I'm sending the Authorization header correctly?

I have a Next.js 14 app router API route protected by JWT. The token is generated correctly on login, stored in localStorage, and attached to every request vi

next.jsapi-routesauthenticationjwttypescript

Dammy0.0.6413426

1mo ago

1answer

5 HBAR bounty

How to reliably listen for Hedera HCS messages in a Next.js Edge runtime?

I'm building a real-time feed for my dApp using Hedera Consensus Service (HCS). My backend is running entirely on Next.js Edge functions on Vercel. However, th

Freed0.0.7278766

Why does my JWT token expire before the expiry time I set?

Problem I am building an authentication system using JWT in Node.js. I set the token expiry to 1 hour but users are getting logged out way before that. W

jwtnode.jsauthenticationexpress

Freed0.0.7278766

1mo ago

0answers

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