default: {NUMBER}
abcd: {NUMBER}
b: 0.000000
a: {NUMBER}
log more
warn 2
debug
info
*%(basename)s:25: Error: exception
console.info({ toString: () => {throw new Error("exception");} })
                                ^
Error: exception
    at Object.toString (*%(basename)s:25:39)
    at console.info (<anonymous>)
    at *%(basename)s:25:9