singleline-html-element-content-newline.md

Pattern: Missing line break for single-line element

Issue: -

Description

This rule enforces a line break before and after the contents of a single-line element.

<template>
  <!-- ✓ GOOD -->
  <div attr>
    content
  </div>
  
  <tr attr>
    <td>
      {{ data1 }}
    </td>
    <td>
      {{ data2 }}
    </td>
  </tr>
  
  <div attr>
    <!-- comment -->
  </div>
  
  <!-- ✗ BAD -->
  <div attr>content</div>
  
  <tr attr><td>{{ data1 }}</td><td>{{ data2 }}</td></tr>
  
  <div attr><!-- comment --></div>
</template>

Options

{
  "vue/singleline-html-element-content-newline": ["error", {
    "ignoreWhenNoAttributes": true,
    "ignoreWhenEmpty": true,
    "ignores": ["pre", "textarea", ...INLINE_ELEMENTS]
  }]
}

• ignoreWhenNoAttributes ... allows having contents in one line, when given element has no attributes. default true
• ignoreWhenEmpty ... disables reporting when element has no content. default true
• ignores ... the configuration for element names to ignore line breaks style. default ["pre", "textarea", ...INLINE_ELEMENTS].

"ignoreWhenNoAttributes": true

<template>
  <!-- ✗ BAD -->
  <div attr>content</div>
  
  <tr attr><td>{{ data1 }}</td><td>{{ data2 }}</td></tr>
  
  <div attr><!-- comment --></div>
</template>

"ignoreWhenNoAttributes": false

<template>
  <!-- ✗ BAD -->
  <div>content</div>
  
  <tr><td>{{ data1 }}</td><td>{{ data2 }}</td></tr>

  <div><!-- comment --></div>
</template>

Further Reading

• eslint-plugin-vue - singleline-html-element-content-newline