jsx-indent.md

Validate JSX indentation (react/jsx-indent)

This option validates a specific indentation style for JSX.

Fixable: This rule is automatically fixable using the --fix flag on the command line. Fixer will fix whitespace and tabs indentation.

Rule Details

This rule is aimed to enforce consistent indentation style. The default style is 4 spaces.

The following patterns are considered warnings:

// 2 spaces indentation
<App>
  <Hello />
</App>

// no indentation
<App>
<Hello />
</App>

// 1 tab indentation
<App>
  <Hello />
</App>

Rule Options

It takes an option as the second parameter which can be "tab" for tab-based indentation or a positive number for space indentations. To enable checking the indentation of attributes, use the third parameter to turn on the checkAttributes option (default is false).

...
"react/jsx-indent": [<enabled>, 'tab'|<number>, {checkAttributes: <boolean>}]
...

The following patterns are considered warnings:

// 2 spaces indentation
// [2, 2]
<App>
    <Hello />
</App>

// tab indentation
// [2, 'tab']
<App>
  <Hello />
</App>

// [2, 2, {checkAttributes: true}]
<App render={
  <Hello render={
    (bar) => <div>hi</div>
}
  />
</App>

The following patterns are not warnings:

// 2 spaces indentation
// [2, 2]
<App>
  <Hello />
</App>

// tab indentation
// [2, 'tab']
<App>
  <Hello />
</App>

// no indentation
// [2, 0]
<App>
<Hello />
</App>

// [2, 2, {checkAttributes: false}]
<App render={
  <Hello render={
    (bar) => <div>hi</div>
}
  />
</App>

When not to use

If you are not using JSX then you can disable this rule.