nl_tokens: Parse a string into a mapping of logger names to levels to determine which level of logging a given logging module should use . This is done so that we can optionally have Trace level for what you re working on but then only have warnings and higher for the rest of the code . This is similar in concept to the debug module but needs higher granularity because we have more than one log level . There is currently no globbing support so you will have to specify all name values in the variable as fully resolved . The special value * as a name sets the log level for all levels not mentioned .
pl_tokens: function parseEnvironment ( env , cfg ) { assume ( cfg ) . is . an ( 'object' ) ; let _default = cfg . level || 'info' ; if ( ! env || env === '' ) { return _default ; } assume ( env ) . is . a ( 'string' ) ; let modules = env . <mask> ( ',' ) . map ( x => x . trim ( ) ) ; for ( let x of modules ) { let tokens = x . split ( ':' ) ; if ( tokens . length < 2 ) { let errStr = 'Log levels must use format name:level ' + 'not ' + tokens . join ( ':' ) ; throw new Error ( errStr ) ; } let level = tokens . slice ( tokens . length - 1 ) [ 0 ] ; let name = tokens . slice ( 0 , tokens . length - 1 ) . join ( ':' ) ; if ( allowedLevels . indexOf ( level ) === - 1 ) { let errStr = 'Invalid log level setting: ' + level ; throw new Error ( errStr ) ; } if ( minimatch ( cfg . name , name ) ) { return level ; } } return _default ; }