facebookexperimental/Recoil

Allow greater control in errorSelector

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#637 opened on Oct 7, 2020

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enhancementhelp wanted

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Description

errorSelector currently takes a custom message as a parameter and passes that message into a newly constructed Error object.

Current: errorSelector("This is my error message")

I believe that asking for an Error object as the argument instead of a message would allow for greater control and flexibility.

Proposed: errorSelector(new Error("This is my error message")) Proposed:

errorSelector(() => { 
  let e = new Error(); 
  e.name = "AuthError"; 
  e.message = "User is not logged in"; 
  return e; 
})

If this is functionality that we would like to see in Recoil, I would love to submit a PR on this.

Contributor guide

Research direction
Examine the current errorSelector implementation in Recoil's source and create a version that accepts an Error object or a factory function returning an Error. Update tests accordingly.
Tech stack
javascriptreact
Domain
frontend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
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.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScriptReactRecoil
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70