/**
 * Content extractors for the read command.
 *
 * Pull specific slices out of a markdown/text page so agents don't have to
 * parse the full body themselves. All extractors return arrays.
 *
 *   --extract code       fenced code blocks (with language tag if present)
 *   --extract links      markdown links + bare URLs (deduped)
 *   --extract tables     markdown table blocks (rendered as their raw markdown)
 *   --extract headings   H1/H2/H3 outline with anchor slugs
 */
export type ExtractMode = "code" | "links" | "tables" | "headings";
export declare const EXTRACT_MODES: ExtractMode[];
export declare function isExtractMode(v: string): v is ExtractMode;
export interface CodeBlock {
    language: string | null;
    code: string;
}
export interface Link {
    text: string | null;
    url: string;
}
export interface Heading {
    level: 1 | 2 | 3 | 4 | 5 | 6;
    text: string;
    slug: string;
}
export interface Table {
    rows: number;
    markdown: string;
}
export declare function extractCode(content: string): CodeBlock[];
export declare function extractLinks(content: string): Link[];
export declare function extractTables(content: string): Table[];
export declare function extractHeadings(content: string): Heading[];
export declare function extract(content: string, mode: ExtractMode): unknown[];
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