import { FieldType, Constraints, FieldConstraints } from './models';
/**
 * Finds the most specific <input> type for the types parameter. For example if
 * types is ['email', 'text'] the function returns 'email' because 'email'
 * is the most specific input type. If nothing is found returns 'text'.
 *
 * If the types array is not defined or null 'text` is returned.
 *
 * @param  {Array<string>} The types you want the closest type for.
 * @return {FieldType} The closest <input> type, based on the types parameter.
 */
export declare function mostSpecificInputTypeFor(types: FieldType[] | null | undefined): FieldType;
/**
 * Finds the FieldConstraints rules for a specific validator in the
 * Constraints object.
 *
 * If no constraints can be found for a validator the boolean false
 * is returned.
 *
 * @param  {validator} 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @param  {Constraints} The constraints to find the validator in.
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 * @returns {FieldConstraints | false} The constraints for the specific field
 */
export declare function getFieldConstraintsFor(validator: string, constraints: Constraints): FieldConstraints | false;
/**
 * Finds the FieldConstraints rules for a specific validator.
 *
 * If no constraints can be found for a validator the boolean false
 * is returned.
 *
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 * @returns FieldConstraints | false The constraints for the specific field
 */
export declare function getFieldConstraints(validator: string): FieldConstraints | false;
/**
 * Determine if constraints tell a specific validator makes a field required.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function isRequired(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field have a minimum length.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasMinimumLength(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field have a maximum length.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasMaximumLength(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field have a fraction length.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasFractionLength(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field have a radix.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasRadix(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field comply to a pattern.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasPattern(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field have a minimum.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasMin(validator: string): boolean;
/**
 * Determine if constraints tell a specific validator makes a field have a maximum.
 * @param  validator 'validator' is a string with the format: 'Class.field' for example: 'User.age'
 * @throws {error} When the validator doesn't match the format 'className.fieldName'.
 */
export declare function hasMax(validator: string): boolean;