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@mysticatea @ota-meshi @michalsnik @luxaritas @chrisvfritz
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vue/html-indent
enforce consistent indentation in `<template>`

vue/html-indent

enforce consistent indentation in <template>

  • ⚙️ This rule is included in "plugin:vue/strongly-recommended" and "plugin:vue/recommended".
  • 🔧 The --fix option on the command line can automatically fix some of the problems reported by this rule.

📖 Rule Details

This rule enforces a consistent indentation style in <template>. The default style is 2 spaces.

  • This rule checks all tags, also all expressions in directives and mustaches.
  • In the expressions, this rule supports ECMAScript 2017 syntaxes. It ignores unknown AST nodes, but it might be confused by non-standard syntaxes.
<template>
  <!-- ✓ GOOD -->
  <div class="foo">
    Hello.
  </div>
  <div class="foo">
    Hello.
  </div>
  <div class="foo"
       :foo="bar"
  >
    World.
  </div>
  <div
    id="a"
    class="b"
    :other-attr="{
      aaa: 1,
      bbb: 2
    }"
    @other-attr2="
      foo();
      bar();
    "
  >
    {{
      displayMessage
    }}
  </div>

  <!-- ✗ BAD -->
 <div class="foo">
   Hello.
    </div>
</template>

🔧 Options

{
  "vue/html-indent": ["error", type, {
    "attribute": 1,
    "baseIndent": 1,
    "closeBracket": 0,
    "alignAttributesVertically": true,
    "ignores": []
  }]
}
  • type (number | "tab") ... The type of indentation. Default is 2. If this is a number, it's the number of spaces for one indent. If this is "tab", it uses one tab for one indent.
  • attribute (integer) ... The multiplier of indentation for attributes. Default is 1.
  • baseIndent (integer) ... The multiplier of indentation for top-level statements. Default is 1.
  • closeBracket (integer) ... The multiplier of indentation for right brackets. Default is 0.
  • alignAttributesVertically (boolean) ... Condition for whether attributes should be vertically aligned to the first attribute in multiline case or not. Default is true
  • ignores (string[]) ... The selector to ignore nodes. The AST spec is here. You can use esquery to select nodes. Default is an empty array.

2, {"attribute": 1, "closeBracket": 1}

<template>
  <!-- ✓ GOOD -->
  <div
    id="a"
    class="b"
    other-attr=
      "{longname: longvalue}"
    other-attr2
      ="{longname: longvalue}"
    >
    Text
  </div>
</template>

2, {"attribute": 2, "closeBracket": 1}

<template>
  <!-- ✓ GOOD -->
  <div
      id="a"
      class="b"
      other-attr=
        "{longname: longvalue}"
      other-attr2
        ="{longname: longvalue}"
    >
    Text
  </div>
</template>

2, {"ignores": ["VAttribute"]}

<template>
  <!-- ✓ GOOD -->
  <div
  id=""
    class=""
  />
</template>

2, {"alignAttributesVertically": false}

<template>
  <!-- ✓ GOOD -->
  <div id=""
    class=""
    some-attr=""
  />

  <!-- ✗ BAD -->
  <div id=""
       class=""
       some-attr=""
  />
</template>

2, {"baseIndent": 0}

<template>
<!-- ✓ GOOD -->
<div>
  <span>
    Hello!
  </span>
</div>

  <!-- ✗ BAD -->
  <div>
    <span>
      Hello!
    </span>
  </div>
</template>

🔍 Implementation

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