erbfmt v0.3.1

erbfmt v0.3.1

erbfmt v0.3.1 improves HTML attribute linting for static HTML tags.

Highlights

• Added noUnknownHtmlAttribute, which reports unknown HTML attributes and
  suggests the canonical HTML spelling for common typos such as tabIndex,
  tab-index, and auto-complete.
• Added noDeprecatedHtmlAttribute, which reports obsolete presentation and
  legacy attributes such as align, summary, bgcolor, and frameborder.
  This rule is info by default so existing email and embedded HTML can adopt
  it gradually.
• Expanded known attribute support for frequent form, link, media, embed,
  list, and table elements.
• Avoided false positives for global attributes, data-*, aria-*, common
  framework attributes, custom elements, SVG/MathML, and tags with ERB
  attribute fragments.

Configuration

Both rules can be configured independently in erbfmt.json:

{
  "linter": {
    "rules": {
      "noUnknownHtmlAttribute": "warn",
      "noDeprecatedHtmlAttribute": "info"
    }
  }
}

Use "off", "info", "warn", or "error" to match the project's
adoption policy. Only error diagnostics make erbfmt --lint exit with a
failure status.

Upgrade Notes

noUnknownHtmlAttribute is enabled as a warning by default. It can reveal
previously unnoticed spelling mistakes in static HTML, while warning-only lint
results continue to exit successfully. Disable the rule or adjust its severity
if a project relies on non-standard attributes that are not covered by the
framework attribute allowances.