When using the sample configuration file config/log4js.json
log4js is unable to load this configuration:
"appenderList.forEach is not a function" (TypeError: appenderList.forEach is not a function
at configureAppenders (node_modules\log4js\lib\log4js.js:248:18)
at configureOnceOff (node_modules\log4js\lib\log4js.js:308:7)
at Object.configure (node_modules\log4js\lib\log4js.js:371:3)
A valid configuration file looks more like this:
{
"appenders": [
{
"type": "dateFile",
"filename": "log/access.log",
"pattern": "-yyyy-MM-dd",
"category": "http"
},
{
"type": "file",
"filename": "log/app.log",
"maxLogSize": 10485760,
"numBackups": 3
}
]
}