Logging

VWO by default logs all ERROR level messages to your server console.

To gain more control over VWO's logging behaviour, you can use this logger object as shown below.

const logger = {  
  level: vwo.LogLevelEnum.DEBUG,    // DEBUG, INFO, ERROR, TRACE, WARN  
  prefix: 'CUSTOM LOG PREFIX',      // 'VWO-SDK' default  
  transport: {                      // Custom Logger implementation  
    debug: msg => console.log(msg),  
    info: msg => console.log(msg),  
    warn: msg => console.log(msg),  
    error: msg => console.log(msg),  
    trace: msg => console.log(msg)  
  }  
}

vwo.init({
  sdkKey: '...',
  accountId: '123456',
  logger: logger
});

This "logger" object can be passed as one of the parameters when initializing vwoClient.

logger Properties

Paramter	Type	Description
level	String	Level or Type of error. Could be one of the following : DEBUG, INFO, ERROR, TRACE, WARN
prefix	String	The text that is prefixed to the error messages when logged. Defaults to 'VWO-SDK'.
transport	Object	Map of functions that control the logging behaviour of each type of log message.