Simply import and use. See test.sh for how to use.
log "This is just a log"
info "This is an info log"
warn "This is an warn log"
error "This is an error log"
The output will looks like this.
[2020.07.19-16:45:57AEST] This is just a log
[2020.07.19-16:45:57AEST] INFO This is an info log
[2020.07.19-16:45:57AEST] WARN This is an warn log
[2020.07.19-16:45:57AEST] ERROR This is an error log