import type { Position } from "../../token.types.js";
type QuoteDelim = '"' | "'" | '`';
/**
 * Check whether a character is a supported quote delimiter.
 *
 * @param ch - Single character to test.
 * @returns True when `ch` is `"`, `'`, or `` ` ``.
 */
export declare function is_quote(ch: string): ch is QuoteDelim;
export declare function scan_quoted_block(lines: string[], lineIdx: number, colIdx: number): {
    raw: string;
    endLine: number;
    endCol: number;
    delim: QuoteDelim;
};
type TagCloserLex = ">" | "/>" | null;
export declare function scan_tag_header_block(lines: string[], lineIdx: number, colIdx: number, // 0-based col of the opening '<'
lineOffsets: number[]): {
    raw: string;
    endLine: number;
    endCol: number;
    closer: TagCloserLex;
    posAt: (ix: number) => Position;
};
export {};
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