missing base64 contract

[nuliknol]

Periphery contracts use some contract called base64. There is no reference anywhere about this contract and where to get the source of this contract (included inside file NFTDescriptor.sol)

import 'base64-sol/base64.sol';

Some sources online exist, but the NFTDescriptor contract wont compile , returning this error:

 --> libraries/NFTSVG.sol:84:21:
   |
84 |                     bytes(
   |                     ^ (Relevant source part starts here and spans across multiple lines).

Error: Invalid type for argument in function call. Invalid implicit conversion from bytes memory to string memory requested.
  --> libraries/NFTSVG.sol:94:21:
   |
94 |                     bytes(
   |                     ^ (Relevant source part starts here and spans across multiple lines).

Error: Invalid type for argument in function call. Invalid implicit conversion from bytes memory to string memory requested.
   --> libraries/NFTSVG.sol:108:21:
    |
108 |                     bytes(
    |                     ^ (Relevant source part starts here and spans across multiple lines).

Error: Invalid type for argument in function call. Invalid implicit conversion from bytes memory to string memory requested.
   --> libraries/NFTSVG.sol:123:21:
    |
123 |                     bytes(
    |                     ^ (Relevant source part starts here and spans across multiple lines).

Error: Invalid type for argument in function call. Invalid implicit conversion from bytes memory to string memory requested.
  --> libraries/NFTDescriptor.sol:60:45:
   |

I am assuming that this error is due to incorrect base64 contract (that I found on some outdated repos) which returns string, but apparently the requirement is to return bytes. However since there are no sources I can't really be sure.

Please, provide reference to the source code for base64 contract since it doesn't exist anywhere. Thanks

[hensha256]

Hi! that contract is imported as a dependency here. You can see the NPM package here, and the github repo here.