The truncation of leading zeros in the base-x package this library is built with creates an ambiguous encoding. This is especially noticeable in base-2 where the example test case "yes mani !" encodes to "01111001011001010111001100100000011011010110000101101110011010010010000000100001", while a strict encoding would be "001111001011001010111001100100000011011010110000101101110011010010010000000100001". This means that decoding "\x00yes mani !" results in "yes mani !", an erroneous interpretation in many contexts.

More info: multiformats/multibase#34