import { MessageFunctionType, Result } from '../types';
export interface ToFloatErrors {
    TARGET_IS_NOT_A_FLOAT: MessageFunctionType;
}
export declare const TO_FLOAT_ERRORS: ToFloatErrors;
/**
 * Convert the input string to a float,
 * or NaN if the input is not a float.
 *
 * @param target The target
 */
export declare function toFloat(target: string): Result<number | undefined>;