![]() Notice the validateToken functions reads the value of the public.key and it uses the same cryptographic algorithm (RS256) to run the verify function imported from the jsonwebtoken. Next, we decode the token using the validateToken function. ![]() There's actually no code in jwt.decode that guarantees the decoded value will be an object: In fact, in the typings for jws.decode which this module uses, payload of jws.Signature is typed as any. Stack Overflow is leveraging AI to summarize the most relevant questions and answers from the community, with the option to ask follow-up questions in a conversational format. This issue can be a particular gotcha for people consuming JWTs from other services/servers. If you want to guarantee the shape of the decoded object, then you'd need to pass decoded through a validation library like Joi or Yup, or just manually assert properties exist. I create a function names getUserID and it works flawlessly but there is a typescript warning about the decoded value using jsonwebtoken. Currently, I have a page that needs to decode the cookie to get the userid. didn't include the `bar` property, then it won't be there. Hi I am using jsonwebtoken to handle web tokens. you'd think `decoded.bar` is always present.
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