This is dangerous through, because sending a Unicode string through Twitter subjects it to NFC normalization which can alter its structure. If you want guarante

This is dangerous through, because sending a Unicode string through Twitter subjects it to NFC normalization which can alter its structure. If you want guarantees that this won't happen, your choices of code point are far more constrained, and the unassigned code points, which is most of them, can't even be used. I think this is the purpose of base65536gen. https://www.npmjs.com/package/base65536gen https://www.npmjs.com/package/base65536gen