import { Option } from "@siteimprove/alfa-option";
/**
 * Parse the content attribute of a <meta http-equiv="refresh" content ="…" /> element
 * and return the time before the refresh occurs.
 *
 * {@link https://html.spec.whatwg.org/#attr-meta-http-equiv-refresh}
 */
export declare function getRefreshTime(content: string): Option<number>;
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