mharj/mharj-jwt-util

import {verify, type VerifyErrors} from 'jsonwebtoken';
import type {TokenPayload} from '../interfaces/token';

type JwtVerifyPromiseFunc<T = Record<string, unknown>> = (...params: Parameters<typeof verify>) => Promise<TokenPayload<T> | undefined>;
export const jwtVerifyPromise: JwtVerifyPromiseFunc = (token, secretOrPublicKey, options?) => {
    return new Promise<TokenPayload | undefined>((resolve, reject) => {
        verify(token, secretOrPublicKey, options, (err: VerifyErrors | null, decoded: object | string | undefined) => {
            if (err) {
                reject(err);
            } else {
                if (typeof decoded === 'string') {
                    resolve(undefined);
                } else {
                    resolve(decoded);
                }
            }
        });
    });
};