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# Basic usage
```ts
import * as log from "https://deno.land/x/std/logging/index.ts";
// simple console logger
log.debug("Hello world");
log.info("Hello world");
log.warning("Hello world");
log.error("Hello world");
log.critical("500 Internal server error");
// configure as needed
await log.setup({
handlers: {
console: new log.handlers.ConsoleHandler("DEBUG"),
file: new log.handlers.FileHandler("WARNING", "./log.txt")
},
loggers: {
default: {
level: "DEBUG",
handlers: ["console", "file"]
}
}
});
// get configured logger
const logger = log.getLogger("default");
logger.debug("fizz"); // <- logs to `console`, because `file` handler requires 'WARNING' level
logger.warning("buzz"); // <- logs to both `console` and `file` handlers
// if you try to use a logger that hasn't been configured
// you're good to go, it gets created automatically with level set to 0
// so no message is logged
const unknownLogger = log.getLogger("mystery");
unknownLogger.info("foobar"); // no-op
```
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