packer-cn/vendor/github.com/modern-go/concurrent/log.go

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package concurrent
import (
"os"
"log"
"io/ioutil"
)
// ErrorLogger is used to print out error, can be set to writer other than stderr
var ErrorLogger = log.New(os.Stderr, "", 0)
// InfoLogger is used to print informational message, default to off
var InfoLogger = log.New(ioutil.Discard, "", 0)