jsx-one-expression-per-line.md

One JSX Element Per Line (react/jsx-one-expression-per-line)

This option limits every line in JSX to one expression each.

Fixable: This rule is automatically fixable using the --fix flag on the command line. Fixer will insert line breaks between any expression that are on the same line.

Rule Details

The following patterns are considered warnings:

<App><Hello /></App>

<App><Hello />
</App>

<App>
  <Hello>
  </Hello></App>

<App>
  <Hello /> World
</App>

<App>
  <Hello /> { 'World' }
</App>

<App>
  <Hello /> { this.world() }
</App>

<App>
  { 'Hello' }{ ' ' }{ 'World' }
</App>

<App
  foo
><Hello />
</App>

<App><Hello
  foo
/>
</App>

<App><Hello1 />
     <Hello2 />
     <Hello3 />
</App>

The following patterns are not warnings:

<App>
  <Hello />
</App>

<App>
  <Hello>
  </Hello>
</App>

<App>
  <Hello />
  World
</App>

<App>
  <Hello />
  { 'World' }
</App>

<App>
  <Hello />
  { this.world() }
</App>

<App>
  { 'Hello' }
  { ' ' }
  { 'World' }
</App>

<App
  foo
>
  <Hello />
</App>

<App>
  <Hello
    foo
  />
</App>

<App>
  <Hello1 />
  <Hello2 />
  <Hello3 />
</App>

Rule Options

...
"react/jsx-one-expression-per-line": [<enabled>, { "allow": "none"|"literal"|"single-child" }]
...

allow

Defaults to none.

The following pattern is not considered a warning when configured as "literal":

<App>Hello</App>

The following patterns are not considered warnings when configured as "single-child":

<App>Hello</App>

<App>{"Hello"}</App>

<App><Hello /></App>