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nldoc_validation
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WCAG validator for the NLdoc specification.
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lib/nldoc/validation/rules/p_as_heading.ex
defmodule NLdoc.Validation.Rules.PAsHeading do
@moduledoc """
Ensures paragraph elements are not used to style headings.
"""
alias NLdoc.Spec.Paragraph
alias NLdoc.Validation.Severity
use NLdoc.Validation.Rule,
severity: Severity.warning(),
rule: "p-as-heading",
ruleset: "https://dequeuniversity.com/rules/axe/html",
ruleset_version: "4.10",
validates: [Paragraph]
@impl true
def valid?(paragraph = %Paragraph{children: children}, _) do
!Enum.all?(children, &bold?/1) || !NLdoc.Spec.Content.discernible_text?(paragraph)
end
@spec bold?(term()) :: boolean()
defp bold?(%{styling: styling, text: text}),
do: Enum.member?(styling, :bold) || !NLdoc.Spec.Content.discernible_text?(text)
defp bold?(_),
do: false
end