Function validateHex

validateHex(
    inputString: string,
):
    | ""
    | "Invalid hex: odd-length string."
    | "Invalid hex: only characters a-f, A-F and 0-9 allowed."
Validate whether the given string is hex.
- Valid hex consists of an even number of characters 'a-f, A-F, or 0-9`. This is case-insensitive.
- The presence of the common prefix 0x will make the input be considered invalid (because of the x`).
Parameters
- inputString: string
Returns
    | ""
    | "Invalid hex: odd-length string."
    | "Invalid hex: only characters a-f, A-F and 0-9 allowed."
- Defined in packages/caravan-bitcoin/src/utils.ts:48

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