/**
 * This error is used to explain why parsing failed.
 */
declare class ParsingError<T> extends Error {
    /**
     * This provides a programmatic way to access why parsing failed. Downstream devs
     * might want to use this to build their own error messages if the default error
     * messages are not suitable for their use case. This should be an enum.
     */
    invalidReason: T;
    constructor(message: string, invalidReason: T);
}
/**
 * Whereas ParsingError is thrown when parsing fails, e.g. in a fromString function,
 * this type is returned from "defensive" functions like isValid.
 */
type ParsingResult<T> = {
    /**
     * True if valid, false otherwise.
     */
    valid: boolean;
    /**
     * If valid is false, this will be a code explaining why parsing failed.
     */
    invalidReason?: T;
    /**
     * If valid is false, this will be a string explaining why parsing failed.
     */
    invalidReasonMessage?: string;
};

export { ParsingError, type ParsingResult };