Disallows usage of deprecated elements (deprecated)

HTML5 deprecated many old elements.

Rule details

Examples of incorrect code for this rule:

<center>...</center>
<big>...</big>
error: <center> is deprecated: use CSS instead (deprecated) at inline:1:2:
> 1 | <center>...</center>
    |  ^^^^^^
  2 | <big>...</big>


error: <big> is deprecated: use CSS instead (deprecated) at inline:2:2:
  1 | <center>...</center>
> 2 | <big>...</big>
    |  ^^^


2 errors found.

Examples of correct code for this rule:

<main>...</main>

Elements

When using custom elements metadata you can optionally specify a message:

import { defineMetadata } from "html-validate";

export default defineMetadata({
  "my-element": {
    deprecated: "replaced with <other-element>",
  },
});

The message will be shown alongside the regular message:

<my-element>...</my-element>
error: <my-element> is deprecated: replaced with <other-element> (deprecated) at inline:1:2:
> 1 | <my-element>...</my-element>
    |  ^^^^^^^^^^


1 error found.

Options

This rule takes an optional object:

{
  "include": [],
  "exclude": []
}

include

If set only elements listed in this array generates errors.

exclude

If set elements listed in this array is ignored.

Version history