/**
 * A function for generate seed,
 * this should return different value every time it called.
 *
 * @public
 */
export type SeedFn = () => number;
/**
 * A seed builder to build function based on input value.
 *
 * @public
 */
export type SeedBuilder = (input: string) => SeedFn;
/**
 * A patch function to modify seed value after it generated.
 *
 * @public
 */
export type SeedPatch = (n: number) => number;
/**
 * Seed interface, All seed class must implement this interface.
 *
 * @public
 */
export interface ISeed {
    /**
     * copy seed to new instance.
     *
     * @param input - input for new seed
     * @param builder - seed builder
     * @returns new seed
     *
     * @public
     */
    copy(input: string, builder?: SeedBuilder): ISeed;
    /**
     * get seed value.
     *
     * @param patch - patch function
     */
    value(patch?: SeedPatch): number;
}
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