node-token-extractor

Extracts access_token from a HTTP request header Authorization: Bearer <access_token>

Install

$ npm install token-extractor --save

Usage

tokenExtractor(req, callback)

Arguments

• req: HTTP Node.js request
• callback(err, token): A callback which is called with either the token extracted from the header or a possible error.

Example

const tokenExtractor = require('token-extractor');

tokenExtractor(req, (err, token) => {
  if (err) {
    // handle error
  }

  console.log(token); // token extracted from HTTP header
});

Error handling

TokenExtractorError

Possible thrown errors

| message | code | | ----------------------------------------------- |:------------------------------------:| | No Authorization header is present | E_AUTHORIZATION_REQUIRED | | Format is :: Authorization: Bearer | E_AUTHORIZATION_INVALID_FORMAT | | Authorization token was not found | E_AUTHORIZATION_TOKEN_NOT_FOUND |

Example

Suppose E_AUTHORIZATION_TOKEN_NOT_FOUND error was thrown

tokenExtractor(req, (err, token) => {
  if (err) {
    console.log(err.toJSON());
    /*
      {
        status: 401,
        message: 'Authorization token was not found',
        code: 'E_AUTHORIZATION_TOKEN_NOT_FOUND'
      }
    */

    console.log(err.toString());
    /*
      [TokenExtractedError (E_AUTHORIZATION_TOKEN_NOT_FOUND) Authorization token was not found]
    */

    console.trace(err);
    /*
      prints Error Stack since err instanceof Error
    */
  }
}));

Test

$ npm test