OAuth2-Authorize-URL is not created correctly when "authorize_url" configuration contains URL parameters

[christian-judt]

"electron-oauth-helper": "5.0.0",

In the file:

/lib/oauth2/helper.ts

the code

const authorizeUrl = `${config.authorize_url}?${querystring.stringify(
  authorizeParameters,
)}`

does not create a correct OAuth2-Authorize-URL in case the URL stored in config.authorize_url already has URL parameters.

For example the config.authorize_url https://example/oauth2/auth?lang=en would be converted to the OAuth2-Authorize-URL https://example/oauth2/auth?lang=en?client_id=XXXXXX&redirect_uri=YYYYYY&... which has two question marks and thereby will most likely not work as intended in most OAuth2-Environments.

This problem seems to affect many if not all earlier versions of the OAuth-Helper as well.