useQwikMethodUsage

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Summary

Rule available since: v2.2.6
Diagnostic Category: lint/nursery/useQwikMethodUsage
This rule doesn’t have a fix.
The default severity of this rule is error.
This rule belongs to the following domains:
- qwik
Sources:
- Same as qwik/use-method-usage

How to configure

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{
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  "linter": {
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    "rules": {
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      "nursery": {
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        "useQwikMethodUsage": "error"
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      }
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    }
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  }
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}

Description

Disallow use* hooks outside of component$ or other use* hooks in Qwik applications.

Ensures Qwik’s lifecycle hooks are only used in valid reactive contexts. See Qwik Component Lifecycle for proper hook usage.

Examples

Invalid

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import { useSignal } from "@builder.io/qwik";
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export const Counter = () => {
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  const count = useSignal(0);
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};

code-block.js:4:17 lint/nursery/useQwikMethodUsage ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Qwik hook detected outside of an allowed scope.
  
    3 │ export const Counter = () => {
  > 4 │   const count = useSignal(0);
      │                 ^^^^^^^^^^^^
    5 │ };
    6 │ 
  
  ℹ Qwik’s reactive hooks (functions starting with  use* followed by uppercase letter) must be:
    - Used exclusively within `component$` functions
    - Or encapsulated within other valid Qwik hooks
  
  ℹ Check the Qwik documentation.
  
  ℹ This rule belongs to the nursery group, which means it is not yet stable and may change in the future. Visit https://biomejs.dev/linter/#nursery for more information.

Valid

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import { component$, useSignal } from "@builder.io/qwik";
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export const Counter = component$(() => {
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  const count = useSignal(0);
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});
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export const useCounter = () => {
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  const count = useSignal(0);
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  return count;
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};