/** The pre-defined alpha pattern. */
export declare const alpha: Characters;

export declare class Characters extends PatternBuilder {
    negate(): this;
    clone(): Characters;
}

/**
 * Creates a pattern builder for the character set operator.
 *
 * @param patterns - The patterns to create the character set operator from.
 * @returns The pattern builder.
 *
 * @example pre-defined pattern with string
 * ```ts
 * characterSet(alpha, '#!');
 * // => /[a-zA-Z#!]/
 * ```
 *
 * @example pre-defined pattern with pattern
 * ```ts
 * characterSet(digit, /[a-fA-F]/);
 * // => /[\da-fA-F]/
 * ```
 *
 * @example only string
 * ```ts
 * characterSet("a", "b", "c");
 * // => /[abc]/
 * ```
 */
export declare function characterSet(...patterns: PatternInput[]): Characters;

/**
 * Creates a pattern builder for the concat operator.
 *
 * @param patterns - The patterns to create the concat operator from.
 * @returns The pattern builder.
 *
 * @example only string
 * ```ts
 * concat("a", "b", "c");
 * // => /abc/
 * ```
 *
 * @example pre-defined pattern with pattern
 * ```ts
 * concat(alpha, digit);
 * // => /[a-zA-Z][\d]/
 * ```
 *
 * @example pre-defined pattern with string
 * ```ts
 * concat(alpha, "0");
 * // => /[a-zA-Z]0/
 * ```
 */
export declare function concat(...patterns: PatternInput[]): PatternBuilder;

/** The pre-defined digit pattern. */
export declare const digit: Characters;

/** The pre-defined hex digit pattern. */
export declare const hexDigit: Characters;

/**
 * Creates a pattern builder for the one of operator.
 *
 * @param patterns - The patterns to create the one of operator from.
 * @returns The pattern builder.
 *
 * @example only string
 * ```ts
 * oneOf("a", "b", "c");
 * // => /a|b|c/
 * ```
 *
 * @example pre-defined pattern with pattern
 * ```ts
 * oneOf(alpha, digit);
 * // => /[a-zA-Z]|[\d]/
 * ```
 *
 * @example pre-defined pattern with string
 * ```ts
 * oneOf(alpha, "0");
 * // => /[a-zA-Z]|0/
 * ```
 */
export declare function oneOf(...patterns: PatternInput[]): PatternBuilder;

export declare class PatternBuilder {
    source: string;
    constructor(source: string);
    anchor(position?: "start" | "end"): PatternBuilder;
    group(): this;
    nonCapturingGroup(): this;
    lookahead(): this;
    negateLookahead(): this;
    lookbehind(): this;
    negateLookbehind(): this;
    oneOrMore(): this;
    zeroOrMore(): this;
    exact(count: number): this;
    repeat(min: number, max?: number): this;
    optional(): this;
    clone(): PatternBuilder;
    toString(): string;
    toRegExp(...flags: PatternFlag[]): RegExp;
}

/**
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions#advanced_searching_with_flags | MDN}
 */
export declare type PatternFlag = "d" | "g" | "i" | "m" | "s" | "u" | "v" | "y";

export declare type PatternInput = string | PatternBuilder | RegExp;

export { }