how do I access request headers in oak?

[ralyodio]

I tried request.headers.Authorization but its not defined.

[ralyodio]

this gives error about value possibly being null:

  const auth = request.headers.get('Authorization');
  const matches = /Bearer\s*(.*)/.exec(auth);
  let jwt;

  if (matches.length > 1) {
    jwt = matches[1];
  }

error:

Check file:///home/www/grazily.com/grazily-api/index.ts
error: TS2345 [ERROR]: Argument of type 'string | null' is not assignable to parameter of type 'string'.
  Type 'null' is not assignable to type 'string'.
  const matches = /Bearer\s*(.*)/.exec(auth);
    

[ralyodio]

I"m trying to get the bearer token from the Authorization header

[aapoalas]

Check against null and only do the RegExp matching if the value truly is a string.

[kitsonk]

As mentioned, the error is correct, the value could be null and as @aapoalas says, you need to guard against it. There are several ways to accomplish this, the easiest is:

const matches = /Bearer\s*(.*)/.exec(auth ?? "");