vue/html-comment-content-newline

enforce unified line brake in HTML comments

• 🔧 The --fix option on the command line (opens new window) can automatically fix some of the problems reported by this rule.

📖 Rule Details

This rule will enforce consistency of line break after the <!-- and before the --> of comment. It also provides several exceptions for various documentation styles.

<template> <!-- ✓ GOOD --> <!-- singleline comment --> <!-- multiline comment --> <!-- ✗ BAD --> <!-- singleline comment --> <!-- multiline comment --> </template>

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🔧 Options

{
  "vue/html-comment-content-newline": ["error",
    {
      "singleline": "always" | "never" | "ignore",
      "multiline": "always" | "never" | "ignore",
    },
    {
      "exceptions": []
    }
  ]
}

• The first option is either an object with "singleline" and "multiline" keys.

  • singleline ... the configuration for single-line comments.
    • "never" (default) ... disallow line breaks after the <!-- and before the -->.
    • "always" ... require one line break after the <!-- and before the -->.
  • multiline ... the configuration for multiline comments.
    • "never" ... disallow line breaks after the <!-- and before the -->.
    • "always" (default) ... require one line break after the <!-- and before the -->.

  You can also set the same value for both singleline and multiline by specifies a string.

• This rule can also take a 2nd option, an object with the following key: "exceptions".

  • The "exceptions" value is an array of string patterns which are considered exceptions to the rule.

  "vue/html-comment-content-newline": ["error", { ... }, { "exceptions": ["*"] }]
  

"always"

<template> <!-- ✓ GOOD --> <!-- singleline comment --> <!-- multiline comment --> <!-- ✗ BAD --> <!-- singleline comment --> <!-- multiline comment --> </template>

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"never"

<template> <!-- ✓ GOOD --> <!-- singleline comment --> <!-- multiline comment --> <!-- ✗ BAD --> <!-- singleline comment --> <!-- multiline comment --> </template>

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{"singleline": "always", "multiline": "ignore"}

<template> <!-- ✓ GOOD --> <!-- singleline comment --> <!-- singleline comment --> <!-- multiline comment --> <!-- multiline comment --> <!-- multiline comment --> <!-- ✗ BAD --> <!-- singleline comment --> <!-- singleline comment --> </template>

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{"singleline": "ignore", "multiline": "always"}

<template> <!-- ✓ GOOD --> <!-- multiline comment --> <!-- multiline comment --> <!-- singleline comment --> <!-- singleline comment --> <!-- singleline comment --> <!-- ✗ BAD --> <!-- multiline comment --> </template>

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"always", { "exceptions": ["*"] }

<template> <!--******* ✓ GOOD *******--> <!--******* comment *******--> <!--******* ✗ BAD *******--> <!--******* multiline comment *******--> </template>

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👫 Related Rules

• vue/html-comment-indent
• vue/html-comment-content-spacing
• spaced-comment (opens new window)

🚀 Version

This rule was introduced in eslint-plugin-vue v7.0.0

🔍 Implementation

• Rule source (opens new window)
• Test source (opens new window)