import type { HighlightOptions } from '../types/common.js';
export declare function escapeHtml(value: string): string;
export declare function unescapeHtml(value: string): string;
export declare function compactWhitespace(value: string, preserveLineBreaks?: boolean): string;
export declare function highlightKeyword(text: string, keyword: string, options?: HighlightOptions): string;
export declare function analyzeText(value: string): {
    chineseCount: number;
    asciiCount: number;
    otherCount: number;
    length: number;
};
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