/**
 * Accessibility Validator
 *
 * Static a11y checks on Eddie markup — the class of defect that renders fine
 * but fails real users, which neither the token nor naming nor slot-contract
 * validators catch. Added after a generated bradfrost.com footer shipped
 * placeholder/non-descriptive link text and plain (non-knockout) links on the
 * dark footer band (see #637).
 *
 * Scope:
 *  - `.html` files (consumer projects, boilerplates)
 *  - Lit `html`...`` template regions inside `.ts` / `.tsx` / `.js` / `.mjs` / `.jsx`
 *
 * Checks:
 *  1. LINK TEXT — link-bearing elements (`ed-link-list-item`,
 *     `ed-primary-nav-item`, `ed-utility-nav-item`, `ed-icon-link-list-item`,
 *     bare `<a>`) whose accessible label is a placeholder ("Nav Item",
 *     "primary nav 1") or a non-descriptive generic ("Click here", "Read more",
 *     empty). WCAG 2.4.4 — link text must describe its destination out of
 *     context.
 *  2. KNOCKOUT-ON-DARK — `ed-link-list` / `ed-logo` inside an `ed-footer` or
 *     `ed-r-site-footer` (a knockout/dark band) that omit the `knockout`
 *     variant, so their links fail contrast against the dark surface.
 *     WCAG 1.4.3.
 *
 * Conservatism: like the slot-contract validator, false positives are worse
 * than false negatives here — noisy a11y output gets ignored. The placeholder
 * list is tight and the generic-CTA list is graded to `warning`, not `error`.
 */
import type { HealthIssue } from '../types.js';
export declare class AccessibilityValidator {
    validateFile(filePath: string): Promise<HealthIssue[]>;
    private scanRegion;
    private checkLinkText;
    /**
     * True when the matched open tag encloses non-empty content that would act as
     * the item's accessible label — slotted text, an interpolated expression, or a
     * nested element. Self-closing tags never have one.
     */
    private hasSlottedLabel;
    private classifyLabel;
    private linkIssue;
    private checkKnockoutContext;
    private scanForMissingKnockout;
}
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