/**
 * Instantiate a Opcode from it's Opcode string or number
 *
 * @example
 * ```javascript
 *
 * var opcode = Opcode(42);
 * var opcode2 = Opcode('OP_NOP');
 *
 * ```
 *
 * @param {string|number} arg - The opcode number or string
 * @returns {Opcode} A new Opcode instance
 * @constructor
 */
export class Opcode {
  constructor(arg: string | number);

  readonly num: Number;

  /**
   * @memberOf Opcode
   * @param {Opcode} opcode
   * @returns true if opcode is one of OP_0, OP_1, ..., OP_16
   */
  static isSmallIntOp(opcode: Opcode): Boolean;

  /**
   * @returns map of the available opcodes
   */
  static map: Object;

  /**
   * Return a new opcode from a smallInt
   * @param {number} n - a small int
   * @return {Opcode}
   */
  static smallInt(n: number): Buffer;
  /**
   * Instantiate a Opcode from a Buffer
   *
   * @param {Buffer} buf
   * @return {Opcode}
   */
  static fromBuffer(buf: Buffer): Opcode;

  /**
   * Instantiate a Opcode from a number
   *
   * @function
   * @param {number} num - The Opcode number
   * @return {Opcode}
   */
  static fromNumber(num: number): Opcode;

  /**
   * Instantiate a Opcode from it's string format
   *
   * @function
   * @param {string} str - The Opcode in string format
   * @return {Opcode}
   */
  static fromString(str: string): Opcode;

  /**
   * Will return the Opcode as an hex
   * @return {string}
   */
  toHex(): string;

  /**
   * Will return the opcode as a buffer
   *
   * @returns {Buffer} A buffer of the opcode
   */
  toBuffer(): Buffer;

  /**
   * Will output the opcode as a number
   *
   * @returns {number}
   */
  toNumber(): string;

  /**
   * Will output the opcode encoded as hex string
   *
   * @returns {string}
   */
  toString(): string;

  /**
   * Will return a string formatted for the console
   *
   * @returns {string} Script opcode
   */
  inspect(): string;
}