Solidity base64 and base64URL enconder/decoder

This is an implementation of base64/base64URL, supporting Solidity 0.8.x

Set up

Node >= 10.x && yarn > 1.x

$ node --version
v16.15.0

$ npm install --global yarn

$ yarn --version
1.22.18

Install dependencies

$ yarn

Test

1. Compile contracts

$ yarn compile

2. Run unit tests

$ yarn test