[Next.js] "effects_UNSTABLE" => Warning: did not match. Server, Client

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Description

Contributor guide

Research direction

Investigate the SSR mismatch in Recoil's effects UNSTABLE by setting up a Next.js project with Recoil and reproducing the warning. Identify the root cause in how effects are serialized during SSR.

Tech stack

nextjsreactjavascript

Domain

frontend

Issue type

Bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Needs investigation

Prerequisites

ReactNext.jsRecoil

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

40