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Assert a condition, throw with message if false
Assert a condition, throw with message if false.
npm install @thinice/invariantimport { invariant } from "@thinice/invariant";
function getUser(id: string | null) {
invariant(id, "id is required");
// id is now narrowed to string
return db.users.find(id);
}https://github.com/thinicejs/utils/tree/main/packages/invariant