dot record console.log('xx')

[junbao520]

log4js.configure({
appenders: {
cheeseLogs: { type: 'file', filename: 'cheese.log' },
console: { type: 'console' }
},
categories: {
cheese: { appenders: ['cheeseLogs'], level: 'error' },
another: { appenders: ['console'], level: 'trace' },
default: { appenders: ['console', 'cheeseLogs'], level: 'trace' }
}
});

this code dot record console.log()

[rnd-debug]

@junbao520 Please provide an example of your issue.
The following code works as expected:

const log4js = require('log4js')

log4js.configure({
appenders: {
cheeseLogs: { type: 'file', filename: 'cheese.log' },
console: { type: 'console' }
},
categories: {
cheese: { appenders: ['cheeseLogs'], level: 'error' },
another: { appenders: ['console'], level: 'trace' },
default: { appenders: ['console', 'cheeseLogs'], level: 'trace' }
}
});

const logger = log4js.getLogger();
logger.trace("this message is recorded to cheese.log file and appears in the console");
console.log("this message goes to console only, as it is not using log4js");
const loggerAnother = log4js.getLogger("another");
loggerAnother.trace("goes only to console");
const loggerCheese = log4js.getLogger("cheese");
loggerCheese.error("goes only to cheese file");
loggerCheese.trace("not recorded, because cheese level is 'error'");

[abernh]

I saw the same issue and it is a misunderstanding:

TLDR;

logger.log is not a log-level-short method like logger.info or logger.error but expects a valid log-level as first parameter (or will silently default to log-level Info).

In Detail

I landed here because my logger.log calls seem to drop the first argument that was given, logging only 2nd and further arguments.
As I had simply replaced console.log with the log4js logger, I had overlooked the fact that there is no log log-level. The .log method has a different format.

#lib/logger.js:70
  log(level, ...args) { ...

Using logger.log('some message'); will not log that message but treats the log as log-level Info and drops silently that first argument.

const log4js = require('log4js')

log4js.configure({
appenders: {
console: { type: 'console' }
},
categories: {
default: { appenders: ['console'], level: 'trace' }
}
});

const logger = log4js.getLogger();
logger.trace("this message appears in the console");
logger.log("this message appears as empty info log in the console");

Suggestion

To avoid such a misunderstanding it might be better not to auto-default to the Info level without an additional warning about the given invalid log-level.