jsx-uses-react.md

Prevent React to be incorrectly marked as unused (jsx-uses-react)

JSX expands to a call to React.createElement, a file which includes React but only uses JSX should consider the React variable as used.

If you are using the @jsx pragma this rule will mark the designated variable and not the React one.

This rule has no effect if the no-unused-vars rule is not enabled.

Rule Details

The following patterns are considered warnings:

var React = require('react');

// nothing to do with React

/** @jsx Foo */
var React = require('react');

var Hello = <div>Hello {this.props.name}</div>;

The following patterns are not considered warnings:

var React = require('react');

var Hello = <div>Hello {this.props.name}</div>;

/** @jsx Foo */
var Foo = require('foo');

var Hello = <div>Hello {this.props.name}</div>;

Rule Options

...
"jsx-uses-react": [<enabled>, { "pragma": <string> }]
...

pragma

As an alternative to specifying the above pragma in each source file, you can specify this configuration option:

var Foo = require('Foo');

var Hello = <div>Hello {this.props.name}</div>;

When Not To Use It

If you are not using JSX, if React is declared as global variable or if you do not use the no-unused-vars rule then you can disable this rule.