Added "token_use" getter. Updated devDependencies.

• Added token_use getter to CognitoAccessToken and CognitoIdToken classes.
• Deprecated tokenUse getter from CognitoAccessToken and CognitoIdToken classes.
• Updated package.json devDependencies:
  • @types/mocha: ^5.2.7 > ^7.0.2
  • @types/node: ^10.17.17 > ^12.12.31
  • aws-sdk: ^2.644.0 > ^2.647.0
  • mocha: ^5.2.0 > ^7.1.1
  • tslint: ^5.20.1 > ^6.1.0

Allow token verification

Replaced dependency on jwt-decode with jsonwebtoken to allow token validation.

1. Constructor Enhancements:

   • Added pem parameter for token verification with a JSON Web Key (JWT).
   • Added options parameter (typically used for testing).

2. New Methods:

   1. Payload related
      Currently the getPayload() method returns an object.
      The following new methods return their appropriate type:
      - AccessToken class, getAccessTokenPayload() returns AccessTokenPayload.
      - IdToken class, getIdTokenPayload() returns IdTokenPayload.
      - CognitoAccessToken class, getCognitoAccessTokenPayload() returns CognitoAccessTokenPayload.
      - CognitoIdToken class, getCognitoIdTokenPayload() returns CognitoIdTokenPayload.

   2. Get arbitrary property value
      If the specified property exists, getPropertyValue(propertyName: string) returns its value; otherwise undefined.

   3. Header and Signaure

      • getHeader() returns the decoded JWT header.
      • getSignature() returns the decoded JWT signature.

Additional Cognito claims for CognitoIdToken and CognitoAccessToken

Added Claims:

• CognitoIdToken class:

  • cognito:groups
  • device_key
  • event_id

• CognitoAccessToken class:

  • cognito:groups
  • event_id

Initial Release with correct package.json.

This is the initial release that has the correct package.json.