first commit

src/lib/auth/jwt.ts

@@ -0,0 +1,34 @@
+import { createDecoder, createSigner, createVerifier } from "fast-jwt";
+import { jwt } from "#environment/jwt";
+
+import type { UserSession } from "#types/config";
+
+class JWTService {
+	private readonly signer;
+	private readonly verifier;
+	private readonly decoder;
+
+	constructor() {
+		this.signer = createSigner({
+			key: jwt.secret,
+			expiresIn: jwt.expiration,
+		});
+		this.verifier = createVerifier({ key: jwt.secret });
+		this.decoder = createDecoder();
+	}
+
+	sign(payload: UserSession): string {
+		return this.signer(payload);
+	}
+
+	verify(token: string): UserSession {
+		return this.verifier(token);
+	}
+
+	decode(token: string): UserSession {
+		return this.decoder(token);
+	}
+}
+
+export const jwtService = new JWTService();
+export { JWTService };