/**
 * Preprocesses LaTeX content by replacing delimiters and escaping certain characters.
 *
 * @param content The input string containing LaTeX expressions.
 * @returns The processed string with replaced delimiters and escaped characters.
 */
export declare function preprocessLaTeX(content: string): string;
export declare function escapeBrackets(text: string): string;
export declare function escapeMhchem(text: string): string;
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