/**
 * Remove escape characters and return the actual value.
 * @internal
 */
export declare function removeEscapeCharacters(value: string): string;
/**
 * Check if the given string only has valid escape sequences.
 * An escape character must always be followed by another character. Standalone
 * escape characters are not allowed.
 * @internal
 */
export declare function isValidEscapeSequence(value: string): boolean;