Add initial Mocha test suite.
Export AuthorizationError.
Rearrange tests.
Add initial test case for errorHandler.
Expand test coverage for errorHandler.
Test case for errorHandler with state.
Initial test case for transactionLoader.
Additional test coverage for transactionLoader.
Additional test coverage for transactionLoader.
Improve error message.
Disable legacy tests.
Initial test case for decision middleware.
Additional test coverage for decision middleware.
Add test case for decision middleware with parsing function.
More test case porting for decision middleware.
More test case porting for decision middleware.
More test case porting for decision middleware.
More test case porting for decision middleware.
Disable legacy tests.
Initial test cases for authorization middleware.