import { z } from 'zod';
/**
 * Represents a part of speech extracted from a text document.
 * @example NOUN, VERB, ADJECTIVE, etc.
 */
export declare const PosSchema: z.ZodObject<{
    tag: z.ZodString;
    text: z.ZodString;
    score: z.ZodNumber;
    startOffset: z.ZodNumber;
    endOffset: z.ZodNumber;
}, "strip", z.ZodTypeAny, {
    text: string;
    tag: string;
    score: number;
    startOffset: number;
    endOffset: number;
}, {
    text: string;
    tag: string;
    score: number;
    startOffset: number;
    endOffset: number;
}>;
/**
 * The part of speech properties.
 */
export type PosProps = z.infer<typeof PosSchema>;
/**
 * Represents a part of speech extracted from a text document.
 * @example NOUN, VERB, ADJECTIVE, etc.
 */
export declare class PartOfSpeech {
    props: PosProps;
    /**
     * Pos constructor.
     * @param props the properties of the part of speech.
     */
    constructor(props: PosProps);
    /**
     * @returns the part of speech tag.
     */
    static from(data: any): PartOfSpeech;
    /**
     * @returns the part of speech tag.
     */
    tag(): string;
    /**
     * @returns the text associated with the
     * part of speech.
     */
    text(): string;
    /**
     * @returns the confidence score associated with the
     * part of speech.
     */
    score(): number;
    /**
     * @returns the start offset of the part of speech.
     * The start offset is the index of the first character
     * of the part of speech in the text document.
     */
    startOffset(): number;
    /**
     * @returns the end offset of the part of speech.
     * The end offset is the index of the last character
     * of the part of speech in the text document.
     */
    endOffset(): number;
    /**
     * @returns the JSON representation of the part of speech.
     */
    toJSON(): {
        text: string;
        tag: string;
        score: number;
        startOffset: number;
        endOffset: number;
    };
}