import { BaseLiteralType } from '../base/literal.js';
import { IS_OF_TYPE, SUBTYPE, UNIQUE_NAME } from '../../symbols.js';
import type { FieldOptions, Literal, Validation, WithJSONSchema } from '../../types.js';
import { type JSONSchema7 } from 'json-schema';
/**
 * VineLiteral represents a schema type that matches an exact literal value.
 * It validates that the input exactly matches the specified literal value,
 * supporting string, number, boolean, and null literals.
 *
 * @example
 * const schema = vine.literal('admin')
 *
 * const result = await vine.validate({
 *   schema,
 *   data: 'admin'
 * })
 */
export declare class VineLiteral<Value extends Literal> extends BaseLiteralType<Value, Value, Value> implements WithJSONSchema {
    #private;
    /**
     * Static collection of all available validation rules for literals
     */
    static rules: {
        equals: (options: {
            expectedValue: any;
        }) => Validation<{
            expectedValue: any;
        }>;
    };
    /**
     * The subtype identifier for the literal schema field
     */
    [SUBTYPE]: string;
    /**
     * Unique name identifier for union type resolution
     */
    [UNIQUE_NAME]: string;
    /**
     * Type checker function to determine if a value matches the literal value.
     * Required for "unionOfTypes" functionality.
     *
     * @param value - The value to check
     * @returns True if the value matches the literal value
     */
    [IS_OF_TYPE]: (value: unknown) => boolean;
    /**
     * Creates a new VineLiteral instance with the specified literal value.
     *
     * @param value - The exact literal value to match
     * @param options - Field options like bail mode and nullability
     * @param validations - Initial set of validations to apply
     */
    constructor(value: Value, options?: FieldOptions, validations?: Validation<any>[]);
    /**
     * Clones the VineLiteral schema type. The applied options
     * and validations are copied to the new instance.
     *
     * @returns A cloned instance of this VineLiteral schema
     */
    clone(): this;
    /**
     * Converts the schema to JSON Schema format.
     * Generates an enum constraint with the literal value.
     */
    toJSONSchema(): JSONSchema7;
}