---

name: fix-lint description: Helps fix ESLint errors and warnings in the OneKey codebase. Use when running yarn lint and encountering warnings, cleaning up code before committing, or fixing spellcheck, unused variable, or other ESLint warnings.

Fix Lint Skill

This skill helps fix ESLint warnings in the OneKey app-monorepo codebase.

Usage

Use this skill when:

• Running yarn lint and encountering warnings
• Cleaning up code before committing
• Fixing spellcheck, unused variable, or other ESLint warnings

Workflow

Step 1: Run Lint and Analyze Warnings

NODE_OPTIONS="--max-old-space-size=8192" yarn lint:only 2>&1 | tail -100

Step 2: Categorize Warnings

Warnings typically fall into these categories:

Category	Rule	Fix Strategy
Spellcheck	@cspell/spellchecker	Add to skip list or fix typo
Unused vars	@typescript-eslint/no-unused-vars	Remove import or prefix with _
Non-null assertion	@typescript-eslint/no-non-null-assertion	Add type guard or cast
Nested components	react/no-unstable-nested-components	Extract component
Import order	import/order	Fix import ordering

Step 3: Fix Each Category

Spellcheck Warnings (@cspell/spellchecker)

1. Evaluate the word: Is it a legitimate technical term or a typo?

2. For legitimate technical terms, add to skip list:

   # File: development/spellCheckerSkipWords.txt
   # Add the word on a new line at the end of the file
   newTechnicalTerm
   

3. For known typos that can't be fixed (e.g., in translation keys), add with a comment above:

   # Known typo - exsited -> existed (ETranslations.some_key)
   exsited
   

4. Common legitimate terms to add:

   • Build tools: chunkhash, minimizer, rspack
   • Blockchain: lovelace, Kusama, workchain, feebump
   • UI: Virtualized, overscan, overscrolling
   • Crypto: nacl, Bech32, secp256k1

Unused Variable Warnings (@typescript-eslint/no-unused-vars)

1. Unused imports - Remove the import:

   // Before
   import { Used, Unused } from 'package';
   // After
   import { Used } from 'package';
   

2. Unused function parameters - Prefix with underscore:

   // Before
   function foo(used: string, unused: number) { return used; }
   // After
   function foo(used: string, _unused: number) { return used; }
   

3. Unused destructured variables - Prefix with underscore:

   // Before
   const { used, unused } = obj;
   // After
   const { used, unused: _unused } = obj;
   

4. Unused assigned variables - Prefix with underscore:

   // Before
   const unused = getValue();
   // After
   const _unused = getValue();
   

Non-null Assertion Warnings (@typescript-eslint/no-non-null-assertion)

Add type assertions or guards:

// Before
const value = obj.prop!.name;
// After
const value = (obj.prop as { name: string } | undefined)?.name;

Nested Component Warnings (react/no-unstable-nested-components)

Extract the component outside the parent:

// Before
function Parent() {
  const NestedComponent = () => <div />;
  return <NestedComponent />;
}

// After
const ExtractedComponent = () => <div />;
function Parent() {
  return <ExtractedComponent />;
}

Step 4: Verify Fixes

NODE_OPTIONS="--max-old-space-size=8192" yarn lint:only 2>&1 | tail -50

Common Patterns in This Codebase

Translation Key Typos

Translation enum keys (e.g., ETranslations.perp_invaild_tp_sl) cannot be easily renamed as they're managed externally. Add to skip list with a comment:

# Known typo in translation key - invaild -> invalid
invaild

Provider API Methods

Methods like openInMobileApp that throw NotImplemented() often have unused parameters:

public async openInMobileApp(
  _request: IJsBridgeMessagePayload,
  _params: ISignMessagePayload,
): Promise<void> {
  throw new NotImplemented();
}

Destructuring from Hooks

When destructuring from hooks but not using all values:

const { used, unused: _unused } = usePromiseResult(...);

Tips

1. Run lint with increased memory for large codebases:

   NODE_OPTIONS="--max-old-space-size=8192" yarn lint:only
   

2. Check if word is in skip list before adding:

   grep -i "wordToCheck" development/spellCheckerSkipWords.txt
   

3. For bulk fixes, use Task agents to parallelize work across multiple files

4. Verify no regressions after fixes:

   yarn tsc:only
   

Files Modified During Lint Fixes

• development/spellCheckerSkipWords.txt - Add technical terms and known typos (one word per line, use # for comments)
• Various .ts and .tsx files - Fix unused variables and imports