next-firebase-auth-edge/esm/next/cookies/parser/SingleCookieParser.js

Next.js Firebase Authentication for Edge and server runtimes. Compatible with latest Next.js features.

import { errors } from 'jose';
import { InvalidTokenError, InvalidTokenReason } from '../../../auth/error.js';
import { RotatingCredential } from '../../../auth/rotating-credential.js';
export class SingleCookieParser {
    cookies;
    cookieName;
    signatureKeys;
    constructor(cookies, cookieName, signatureKeys) {
        this.cookies = cookies;
        this.cookieName = cookieName;
        this.signatureKeys = signatureKeys;
    }
    async parseCookies() {
        const jwtCookie = this.cookies.get(this.cookieName);
        if (!jwtCookie) {
            throw new InvalidTokenError(InvalidTokenReason.MISSING_CREDENTIALS);
        }
        const credential = new RotatingCredential(this.signatureKeys);
        try {
            const result = await credential.verify(jwtCookie);
            return {
                idToken: result.id_token,
                refreshToken: result.refresh_token,
                customToken: result.custom_token,
                metadata: (result.metadata ?? {})
            };
        }
        catch (e) {
            if (e instanceof errors.JWSSignatureVerificationFailed) {
                throw new InvalidTokenError(InvalidTokenReason.INVALID_SIGNATURE);
            }
            throw e;
        }
    }
}