Function decode

decode(text: string, options?: DecodeOptions): string
Decodes Base64 text back into the original (byte) string.

Input rules:
- Whitespace (space, tab, CR, LF) is ignored anywhere.
- Padding is optional ("Zg" and "Zg==" both decode to "f"), but when present it must be correct and only at the end.
- Any character outside the selected alphabet is an error — including -/_ in "standard" and +// in "url".
- Unused low bits in the final character are ignored, as most decoders do.
Parameters
- text: string
  The Base64 text.
- Optionaloptions: DecodeOptions
  The alphabet the input uses.
Returns string
The decoded bytes.

Throws
If the input is not valid Base64; the message names the problem and its 1-based byte position.
- Defined in index.ts:256