stenciljs/eslint-plugin

How to resolve "Use vDOM listener instead"

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#10 opened on Apr 6, 2020

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Description

Noobie question — I’m using an example straight from the Stencil docs…

@Listen('keydown')
handleKeyDown(ev: KeyboardEvent){
  if (ev.key === 'ArrowDown'){
    console.log('down arrow pressed')
  }
}

I get an error Use vDOM listener instead, and I don’t exactly know how to resolve that… 😬 In other words, I don't exactly know how to "use a vDOM listener instead".

Also, according to the rule docs, this rule is meant to "Ensures that no vdom events are used in @Listen decorator." Why is it bad to listen to vDOM events using the @Listen decorator?

Contributor guide

Research direction
Study the Stencil documentation on event listeners and the 'use vDOM listener' rule. Identify which events require vDOM listeners and modify your code accordingly.
Tech stack
typescript
Domain
frontend
Issue type
Documentation
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
StencilTypeScriptESLint
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70