import { Size, Options } from './types.js';
/**
 * A chainable builder that wraps generated word lists.
 */
export declare class Builder implements Iterable<string> {
    #private;
    constructor(size?: Size, options?: Options, onGenerate?: (words: string[]) => void);
    /**
     * Returns the number of words.
     */
    get length(): number;
    /**
     * Retrieves a specific word by index without array bracket notation.
     */
    get(index: number): string | undefined;
    /**
     * Ignores size limits and generates mixed 2, 3, and 4-letter words.
     */
    mix(): this;
    /**
     * Sets the number of words to return.
     */
    results(number: number): this;
    /**
     * Enforces a syllable pattern (case-insensitive).
     */
    pattern(patternString: string): this;
    /**
     * Freezes the current state to prevent further chained modifications.
     */
    lock(): this;
    /**
     * Returns a standard array copy of the generated words.
     */
    toArray(): string[];
    /**
     * Maps over the generated words array.
     */
    map<U>(callbackfn: (value: string, index: number, array: string[]) => U): U[];
    [Symbol.iterator](): Iterator<string>;
}
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