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 (deprecated) at inline:1:2:
> 1 | <center>...</center>
    |  ^^^^^^
  2 | <big>...</big>


error: <big> is deprecated (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:

{
    "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.