/**
 * Text statistics interface containing various metrics about text
 */
export interface TextStatistics {
    /**
     * Total character count including whitespace and punctuation
     */
    characterCount: number;
    /**
     * Character count excluding whitespace
     */
    characterCountNoSpaces: number;
    /**
     * Letter count (only alphabetic characters)
     */
    letterCount: number;
    /**
     * Letter and number count (alphanumeric characters)
     */
    alphanumericCount: number;
    /**
     * Word count in the text
     */
    wordCount: number;
    /**
     * Sentence count in the text
     */
    sentenceCount: number;
    /**
     * Paragraph count in the text (separated by 2+ newlines)
     */
    paragraphCount: number;
    /**
     * Average word length in characters
     */
    averageWordLength: number;
    /**
     * Average sentence length in words
     */
    averageSentenceLength: number;
    /**
     * Estimated reading time in seconds (based on average reading speed)
     */
    readingTimeSeconds: number;
    /**
     * Estimated reading time as formatted string (e.g., "2 min 30 sec")
     */
    readingTimeFormatted: string;
}
/**
 * Analyzes text and returns comprehensive statistics about it
 *
 * @param text The text to analyze
 * @param wordsPerMinute Reading speed in words per minute (default: 200)
 * @returns TextStatistics object with various metrics
 * @example
 * getTextStats('Hello world! This is a test.');
 * // {
 * //   characterCount: 28,
 * //   characterCountNoSpaces: 24,
 * //   letterCount: 20,
 * //   alphanumericCount: 20,
 * //   wordCount: 6,
 * //   sentenceCount: 2,
 * //   paragraphCount: 1,
 * //   averageWordLength: 3.3,
 * //   averageSentenceLength: 3,
 * //   readingTimeSeconds: 2,
 * //   readingTimeFormatted: '2 sec'
 * // }
 */
export declare function getTextStats(text: string, wordsPerMinute?: number): TextStatistics;