no-typos

Keywords: React, typos, lifecycle, static properties, ESLint rule, autocorrect, LLM-optimized

Detect common typos in React component properties and lifecycle methods. This rule is part of eslint-plugin-react-features.

Quick Summary

Rule Details

Detects misspellings in React lifecycle methods and static properties.

Common Typos Detected

Examples

❌ Incorrect

class MyComponent extends React.Component {
  // Typo in lifecycle
  componentDidUpate() {}  // Should be componentDidUpdate
  componentWillUnmout() {}  // Should be componentWillUnmount
  
  // Typo in static property
  static PropTypes = {};  // Should be propTypes (lowercase p)
}

✅ Correct

this.someProperty

Configuration Examples

Basic Usage

{
  rules: {
    'react-features/no-typos': 'error'
  }
}

Related Rules

• display-name - Component naming
• react-class-to-hooks - Migration to hooks

Further Reading

• React Component Lifecycle - React docs

Known False Negatives

The following patterns are not detected due to static analysis limitations:

Dynamic Variable References

Why: Static analysis cannot trace values stored in variables or passed through function parameters.

// ❌ NOT DETECTED - Prop from variable
const propValue = computedValue;
<Component prop={propValue} /> // Computation not analyzed

Mitigation: Implement runtime validation and review code manually. Consider using TypeScript branded types for validated inputs.

Wrapped or Aliased Functions

Why: Custom wrapper functions or aliased methods are not recognized by the rule.

// ❌ NOT DETECTED - Custom wrapper
function myWrapper(data) {
  return internalApi(data); // Wrapper not analyzed
}
myWrapper(unsafeInput);

Mitigation: Apply this rule's principles to wrapper function implementations. Avoid aliasing security-sensitive functions.

Imported Values

Why: When values come from imports, the rule cannot analyze their origin or construction.

// ❌ NOT DETECTED - Value from import
import { getValue } from './helpers';
processValue(getValue()); // Cross-file not tracked

Mitigation: Ensure imported values follow the same constraints. Use TypeScript for type safety.