const s = "𝚙𝚛𝚘𝚐𝚛𝚊𝚖𝚖𝚒𝚗𝚐 𝚌𝚑𝚊𝚕𝚕𝚎𝚗𝚐𝚎𝚜"; console.log(s.split(/(?=.)/u).map(c => `&#${c.codePointAt()};`).join(""));
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𝚙𝚛𝚘𝚐𝚛𝚊𝚖𝚖𝚒𝚗𝚐 𝚌𝚑𝚊𝚕𝚕𝚎𝚗𝚐𝚎𝚜