/**
 * Represents an internal object identifier (OID) helper that encodes, decodes,
 * and formats object identifiers used within PDF structures.
 *
 * @private
 */
export declare class _PdfObjectIdentifier {
    /**
     * Holds the internal byte-encoded representation of the object identifier.
     *
     * @private
     */
    _encoding: Uint8Array;
    /**
     * Stores the character code for the dot ('.') used in dotted OID notation.
     *
     * @private
     */
    _period: number;
    /**
     * Creates an internal object identifier from individual numeric nodes, with an optional prefix
     * either a leading node or an existing identifier to extend.
     *
     * @private
     * @param {number[]} nodes The sequence of OID nodes.
     * @param {_PdfObjectIdentifier | number} [prefix] An optional prefix OID or the first node to prepend.
     * @returns {_PdfObjectIdentifier} A new object identifier built from the specified parts.
     */
    _fromParts(nodes: number[], prefix?: _PdfObjectIdentifier | number): _PdfObjectIdentifier;
    /**
     * Decodes the internal byte representation into an array of OID nodes.
     *
     * @private
     * @returns {number[]} The decoded list of object identifier nodes.
     */
    _getNodes(): number[];
    /**
     * Formats the internal object identifier as a dot-delimited string (e.g., "1.2.840.113549").
     *
     * @private
     * @returns {string} The dot-delimited representation of the OID.
     */
    _getDotDelimitedNotation(): string;
    /**
     * Formats the internal object identifier in abstract syntax notation (ASN) form.
     *
     * @private
     * @returns {string} The ASN-style representation of the OID.
     */
    _getAbstractSyntaxNotation(): string;
    /**
     * Merges two byte arrays into a single contiguous byte sequence.
     *
     * @private
     * @param {Uint8Array} a The first byte array.
     * @param {Uint8Array} b The second byte array.
     * @returns {Uint8Array} A new byte array containing the concatenation of both inputs.
     */
    _mergeUint8Arrays(a: Uint8Array, b: Uint8Array): Uint8Array;
    /**
     * Parses a dot-delimited object identifier string into an internal object identifier.
     *
     * @private
     * @param {string} str The dot-delimited OID string to parse (e.g., "1.2.840.113549").
     * @returns {_PdfObjectIdentifier} A new object identifier built from the parsed string.
     */
    _fromString(str: string): _PdfObjectIdentifier;
    /**
     * Parses an encoded object identifier from a validated byte sequence.
     *
     * @private
     * @param {Uint8Array} bytes The encoded OID bytes to parse.
     * @returns {_PdfObjectIdentifier} A new object identifier created from the provided bytes.
     */
    _fromBytes(bytes: Uint8Array): _PdfObjectIdentifier;
    /**
     * Creates an object identifier from a byte sequence without validating its structure.
     *
     * @private
     * @param {Uint8Array} bytes The encoded OID bytes to attach directly.
     * @returns {_PdfObjectIdentifier} A new object identifier referencing the provided bytes.
     */
    _fromBytesUnsafe(bytes: Uint8Array): _PdfObjectIdentifier;
    /**
     * Returns the object identifier in its dot delimited string representation.
     *
     * @returns {string} The dot delimited notation generated from the internal nodes.
     */
    toString(): string;
    /**
     * Converts the internal object identifier to its dot-delimited string form for JSON usage.
     *
     * @private
     * @returns {string} The dot-delimited representation of the OID.
     */
    _toJson(): string;
    /**
     * Gets a copy of the internal byte-encoded representation of this object identifier.
     *
     * @private
     * @returns {Uint8Array} A new byte array containing the encoded OID.
     */
    _toBytes(): Uint8Array;
    /**
     * Encodes a set of relative object identifier arcs (nodes) into a byte sequence.
     *
     * @private
     * @param {number[]} value The list of relative OID nodes to encode.
     * @returns {Uint8Array} The encoded byte sequence representing the relative OID.
     */
    _encodeRelativeObjectIdentifier(value: number[]): Uint8Array;
    /**
     * Decodes a byte sequence into a list of relative object identifier arcs (nodes).
     *
     * @private
     * @param {Uint8Array} value The encoded byte sequence to decode.
     * @returns {number[]} The decoded list of relative OID nodes.
     */
    _decodeRelativeObjectIdentifier(value: Uint8Array): number[];
}