JS.REACT.JSX.NO.LITERALS

Prevent using string literals in React component definition

There are a few scenarios where you want to avoid string literals in JSX. You may want to enforce consistency, reduce syntax highlighting issues, or ensure that strings are part of a translation system.

Rule Details

By default this rule requires that you wrap all literal strings in a JSX container {'TEXT'}.

Examples of incorrect code for this rule:

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var Hello = <div>test</div>;

Examples of correct code for this rule:

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var Hello = <div>{'test'}</div>;

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var Hello = <div>
  {'test'}
</div>;

Rule Options

The supported options are:

noStrings (default: false) - Enforces no string literals used as children, wrapped or unwrapped.
allowedStrings - An array of unique string values that would otherwise warn, but will be ignored.
ignoreProps (default: false) - When true the rule ignores literals used in props, wrapped or unwrapped.
noAttributeStrings (default: false) - Enforces no string literals used in attributes when set to true.

To use, you can specify as follows:

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"react/jsx-no-literals": [<enabled>, {"noStrings": true, "allowedStrings": ["allowed"], "ignoreProps": false, "noAttributeStrings": true }]

Examples of incorrect code for this rule, with the above configuration:

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var Hello = <div>test</div>;

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var Hello = <div>{'test'}</div>;

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var Hello = <div>
  {'test'}
</div>;

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var Hello = <div>
<img alt="test"> </img>
</div>;

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var Hello = <div class='xx' />;

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var Hello = <div class={'xx'} />;

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var Hello = <div class={`xx`} />;

Examples of correct code for this rule:

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// When using something like `react-intl`
var Hello = <div><Text {...message} /></div>

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// When using something similar to Rails translations
var Hello = <div>{translate('my.translation.key')}</div>

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// an allowed string
var Hello = <div>allowed</div>

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// an allowed string surrounded by only whitespace
var Hello = <div>
  allowed
</div>;

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// a string value stored within a variable used as an attribute's value
var Hello = <div>
<img alt={imageDescription} {...props} />
</div>;

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// spread props object
var Hello = <Text {...props} />

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// use variable for prop values
var Hello = <div class={xx} />

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// cache
class Comp1 extends Component {
  asdf() {}

  render() {
    return (
      <div onClick={this.asdf}>
        {'asdjfl'}
        test
        {'foo'}
      </div>
    );
  }
}

When Not To Use It

If you do not want to enforce any style JSX literals, then you can disable this rule.