import type { ConsentManager } from './consent-manager.js';
/**
 * Consent-gated resource blocker. Holds tagged elements inert until the
 * matching category is granted, then activates them in place.
 *
 * Tagging in HTML:
 *
 *   <script type="text/plain" data-keksmeister="analytics" data-src="https://…"></script>
 *   <img data-keksmeister="marketing" data-src="https://example.com/pixel.gif" />
 *   <iframe data-keksmeister="marketing" data-src="https://…embed…" />
 *   <link data-keksmeister="analytics" data-href="https://…/preload.css" rel="preload" as="style">
 *
 * For `<script>` the element is replaced with a fresh `<script>` so the
 * browser actually parses and executes it (changing `type` on an existing
 * script never re-runs it). For every other tag, the placeholder
 * attribute is just flipped to the real attribute (e.g. `data-src` →
 * `src`), which triggers the browser's normal fetch path.
 *
 * The blocker re-scans on every consent change and watches the DOM for
 * dynamically added tags via `MutationObserver`.
 */
export declare class ScriptBlocker {
    private manager;
    private observer;
    private activated;
    private consentHandler;
    constructor(manager: ConsentManager);
    /** Start watching the DOM and activate consented resources. */
    start(): void;
    /** Stop watching the DOM and listening for consent changes. */
    stop(): void;
    /** Scan blocked elements and activate those with accepted categories. */
    private scanAndActivate;
    private activateElement;
    /**
     * Replace a blocked script with an executable copy. Necessary because
     * browsers don't re-evaluate a script element once it has been parsed,
     * regardless of later attribute changes.
     */
    private activateScript;
    /**
     * For `<img>`/`<iframe>`/`<link>`/etc., flip every known placeholder
     * attribute to its real counterpart and remove the gating attributes.
     * Setting `src` (or `href`, `srcset`, …) is what triggers the browser
     * to issue the network request, so we never had a request before.
     */
    private flipPlaceholders;
    private isBlockedElement;
}