jsx-newline.md

Require or prevent a new line after jsx elements and expressions (react/jsx-newline)

🔧 This rule is automatically fixable by the --fix CLI option.

Rule Details

This is a stylistic rule intended to make JSX code more readable by requiring or preventing lines between adjacent JSX elements and expressions.

Rule Options

...
"react/jsx-newline": [<enabled>, { "prevent": <boolean>, "allowMultilines": <boolean> }]
...

• enabled: for enabling the rule. 0=off, 1=warn, 2=error. Defaults to 0.
• prevent: optional boolean. If true prevents empty lines between adjacent JSX elements and expressions. Defaults to false.
• allowMultilines: optional boolean. If true and prevent is also equal to true, it allows newlines after multiline JSX elements and expressions. Defaults to false.

Examples

Examples of incorrect code for this rule, when configured with { "prevent": false }:

<div>
  <Button>{data.label}</Button>
  <List />
</div>

<div>
  <Button>{data.label}</Button>
  {showSomething === true && <Something />}
</div>

<div>
  {showSomething === true && <Something />}
  {showSomethingElse === true ? (
    <SomethingElse />
  ) : (
    <ErrorMessage />
  )}
</div>

Examples of correct code for this rule, when configured with { "prevent": false }:

<div>
  <Button>{data.label}</Button>

  <List />

  <Button>
    <IconPreview />
    Button 2

    <span></span>
  </Button>

  {showSomething === true && <Something />}

  <Button>Button 3</Button>

  {showSomethingElse === true ? (
    <SomethingElse />
  ) : (
    <ErrorMessage />
  )}
</div>

Examples of incorrect code for this rule, when configured with { "prevent": true }:

<div>
  <Button>{data.label}</Button>

  <List />

  <Button>
    <IconPreview />
    Button 2

    <span></span>
  </Button>

  {showSomething === true && <Something />}

  <Button>Button 3</Button>

  {showSomethingElse === true ? (
    <SomethingElse />
  ) : (
    <ErrorMessage />
  )}
</div>

Examples of correct code for this rule, when configured with { "prevent": true }:

<div>
  <Button>{data.label}</Button>
  <List />
</div>

<div>
  <Button>{data.label}</Button>
  {showSomething === true && <Something />}
</div>

<div>
  {showSomething === true && <Something />}
  {showSomethingElse === true ? (
    <SomethingElse />
  ) : (
    <ErrorMessage />
  )}
</div>

Examples of incorrect code for this rule, when configured with { "prevent": true, "allowMultilines": true }:

<div>
  {showSomething === true && <Something />}

  <Button>Button 3</Button>
  {showSomethingElse === true ? (
    <SomethingElse />
  ) : (
    <ErrorMessage />
  )}
</div>

Examples of correct code for this rule, when configured with { "prevent": true, "allowMultilines": true }:

<div>
  {showSomething === true && <Something />}

  <Button>Button 3</Button>

  {showSomethingElse === true ? (
    <SomethingElse />
  ) : (
    <ErrorMessage />
  )}
</div>

When Not To Use It

You can turn this rule off if you are not concerned with spacing between your JSX elements and expressions.