authorizationUrl and passport strategy options incorrectly exploded into query params

[przemos]

Hi, just upgraded openid-client lib to 3.0.2.

I've noticed that when options object is passed to passport.authenticate, it is incorrectly attached to the authorizationUrl:
passport.authenticate('oidc', {
'scope': 'scopes'
'redirect_uri': 'someUrl`,
})(req, res, next);

then url is :
https://somehost/authorize?client_id=550bf762-dd80-437c-ac27-1b62d1d4d1bc&scope=somescope&response_type=code&state=60Lg2m9xstUv05fty2PozIS-SFvPQLXk83hqYkhCsAs&options=%5Bobject%20Object%5D

See options query params... it seems options parameters should be merged with defaults and flattened as name-value pairs, but it is attached as query params with tostring instead :(

[panva]

@przemos thank you for the report, this was indeed a regression during the code syntax update and removal of unnecessary _.defaults. I've included a test for the fixed behaviour so that it does not re-appear in the future. This is now released as v3.1.1