Useless PropTypes declaration should be removed

  • REACT_USELESS_PROP_TYPES
  • Code Quality
  • Low
  • react

This rule applies when a PropTypes declaration exists for a property but the property is not used for the implementation of the component.

For maintainability, it is recommended to remove useless PropTypes declarations.

Noncompliant Code Example

import React from 'react';
import PropTypes from 'prop-types';

class Hello extends React.Component {
    render() {
        return <div>Hello, {this.props.name}</div>;
    }
}

Hello.propTypes = {
    name: PropTypes.string,
    age: PropTypes.number // REACT_USELESS_PROP_TYPES alarm because this property 'age' is not used.
};

Compliant Code Example

import React from 'react';
import PropTypes from 'prop-types';

class Hello extends React.Component {
    render() {
        return <div>Hello, {this.props.name}</div>;
    }
}

Hello.propTypes = {
    name: PropTypes.string
};

Version

This rule was introduced in DeepScan 1.3.0-beta.

See