'FAILED' error when trying to un-star the 'Bug Reporter' badge

[Turtle]

@pangbo

const user_name = require("discourse/models/user").default.current().username;
const badges = await require("discourse/models/user-badge").default.findByUsername(user_name);
const favorites = new Map();
badges.filter((b)=>b.is_favorite).forEach((b)=>favorites.set(b.badge_id,b));
favorites.forEach((b)=>b.favorite());

I just encountered this error, but copying and pasting the code into the console returns a syntax error of:

SyntaxError: Unexpected identifier ‘require’. Expected ‘;’ after variable declaration.
SyntaxError: Unexpected identifier ‘identifier’

Perhaps this is a bit outdated? Anyone have an updated version?