nl_tokens: Strategy constructor .
pl_tokens: function Strategy ( options , verify ) { var supportedApiVersions = [ '1' , '2' ] , defaultOptionsByApiVersion = { 1 : { authorizationURL : 'https://www.dropbox.com/1/oauth2/authorize' , tokenURL : 'https://api.dropbox.com/1/oauth2/token' , scopeSeparator : ',' , customHeaders : { } } , 2 : { authorizationURL : 'https://www.dropbox.com/oauth2/authorize' , tokenURL : 'https://api.dropbox.com/oauth2/token' , scopeSeparator : ',' , customHeaders : { 'Content-Type' : 'application/json' } } } ; options = options || { } ; if ( options . apiVersion != null && supportedApiVersions . indexOf ( options . apiVersion . toString ( ) ) === - 1 ) { throw new Error ( 'Unsupported Dropbox API version. Supported versions are "1" and "2".' ) ; } this . _apiVersion = options . apiVersion || '1' ; options . authorizationURL = options . authorizationURL || defaultOptionsByApiVersion [ this . _apiVersion ] . authorizationURL ; options . tokenURL = options . tokenURL || defaultOptionsByApiVersion [ this . _apiVersion ] . tokenURL ; options . scopeSeparator = options . scopeSeparator || defaultOptionsByApiVersion [ this . _apiVersion ] . scopeSeparator ; <mask> . customHeaders = options . customHeaders || defaultOptionsByApiVersion [ this . _apiVersion ] . customHeaders ; OAuth2Strategy . call ( this , options , verify ) ; this . name = 'dropbox-oauth2' ; }