Class Hex

NOTE: Do not use this class when working with account addresses; use AccountAddress instead. When accepting hex data as input to a function, prefer to accept HexInput and

A helper class for working with hex data. Hex data, when represented as a string, generally looks like this, for example: 0xaabbcc, 45cd32, etc.

then use the static helper methods of this class to convert it into the desired format. This enables the greatest flexibility for the developer.

Example usage:

getTransactionByHash(txnHash: HexInput): Promise<Transaction> {
  const txnHashString = Hex.fromHexInput(txnHash).toString();
  return await getTransactionByHashInner(txnHashString);
}

This call to Hex.fromHexInput().toString() converts the HexInput to a hex string with a leading 0x prefix, regardless of what the input format was.

Other ways to chain the functions together:

  • Hex.fromHexString({ hexInput: "0x1f" }).toUint8Array()
  • new Hex([1, 3]).toStringWithoutPrefix()

Constructors

constructor

Methods

equals toString toStringWithoutPrefix toUint8Array fromHexInput fromHexString hexInputToString hexInputToStringWithoutPrefix hexInputToUint8Array isValid

Constructors

constructor

  • new Hex(data): Hex

  • Create a new Hex instance from a Uint8Array.

    Parameters

    • data: Uint8Array

      The Uint8Array containing the data to initialize the Hex instance.

    Returns Hex

Methods

equals

  • equals(other): boolean

  • Determine if two Hex instances are equal by comparing their underlying byte data.

    Parameters

    • other: Hex

      The Hex instance to compare to.

    Returns boolean

    true if the Hex instances are equal, false if not.

toString

  • toString(): string

  • Get the hex data as a string with the 0x prefix.

    Returns string

    Hex string with 0x prefix

toStringWithoutPrefix

  • toStringWithoutPrefix(): string

  • Get the hex data as a string without the 0x prefix.

    Returns string

    Hex string without 0x prefix

toUint8Array

  • toUint8Array(): Uint8Array

  • Get the inner hex data as a Uint8Array. The inner data is already a Uint8Array, so no conversion takes place.

    Returns Uint8Array

    Hex data as Uint8Array

StaticfromHexInput

  • fromHexInput(hexInput): Hex

  • Converts an instance of HexInput, which can be a string or a Uint8Array, into a Hex instance. This function is useful for transforming hexadecimal representations into a structured Hex object for further manipulation.

    Parameters

    • hexInput: HexInput

      A HexInput which can be a string or Uint8Array.

    Returns Hex

    A Hex instance created from the provided hexInput.

StaticfromHexString

  • fromHexString(str): Hex

  • Converts a hex string into a Hex instance, allowing for both prefixed and non-prefixed formats.

    Parameters

    • str: string

      A hex string, with or without the 0x prefix.

    Returns Hex

    Hex - The resulting Hex instance created from the provided string.

    Throws

    ParsingError - If the hex string is too short, has an odd number of characters, or contains invalid hex characters.

StatichexInputToString

  • hexInputToString(hexInput): string

  • Converts a HexInput (string or Uint8Array) to a hex string with '0x' prefix.

    Parameters

    • hexInput: HexInput

      The input to convert, either a hex string (with/without '0x' prefix) or Uint8Array

    Returns string

    A hex string with '0x' prefix (e.g., "0x1234")

    Example

    Hex.hexInputToString("1234")        // returns "0x1234"
    Hex.hexInputToString("0x1234")      // returns "0x1234"
    Hex.hexInputToString(new Uint8Array([0x12, 0x34])) // returns "0x1234"

StatichexInputToStringWithoutPrefix

  • hexInputToStringWithoutPrefix(hexInput): string

  • Converts a HexInput (string or Uint8Array) to a hex string without '0x' prefix.

    Parameters

    • hexInput: HexInput

      The input to convert, either a hex string (with/without '0x' prefix) or Uint8Array

    Returns string

    A hex string without '0x' prefix (e.g., "1234")

    Example

    Hex.hexInputToStringWithoutPrefix("1234")        // returns "1234"
    Hex.hexInputToStringWithoutPrefix("0x1234")      // returns "1234"
    Hex.hexInputToStringWithoutPrefix(new Uint8Array([0x12, 0x34])) // returns "1234"

StatichexInputToUint8Array

  • hexInputToUint8Array(hexInput): Uint8Array

  • Converts an instance of HexInput, which can be a string or a Uint8Array, into a Uint8Array.

    Parameters

    • hexInput: HexInput

      A HexInput which can be a string or Uint8Array.

    Returns Uint8Array

    A Uint8Array created from the provided hexInput.

StaticisValid

  • isValid(str): ParsingResult<HexInvalidReason>

  • Check if the provided string is a valid hexadecimal representation.

    Parameters

    • str: string

      A hex string representing byte data.

    Returns ParsingResult<HexInvalidReason>

    An object containing:

    • valid: A boolean indicating whether the string is valid.
    • invalidReason: The reason for invalidity if the string is not valid.
    • invalidReasonMessage: A message explaining why the string is invalid.

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