export declare function getNormalizedFragmentsForSpeech(words: string[], nonWhitespaceWords: string[], nonWhitespaceWordOriginalIndex: number[], language: string): {
    normalizedFragments: string[];
    referenceFragments: string[];
};
export declare function normalizeFourDigitYearString(yearString: string): string;
export declare function normalizeFourDigitDecadeString(decadeString: string): string;
export declare function simplifyPunctuationCharacters(text: string): string;
export declare const punctuationSubstitutionLookup: Record<string, string>;
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