CRUMB

A logging library focused on providing an easy to read logging output.

Usage

Before you can start logging anything, a new Logger object will need to be created.

Usually, it is good practice to instantiate a new Logger for each

import { Logger } from "https://deno.land/x/crumb/mod.ts";

const logger = new Logger("example_logger");

logger.debug("debug message");
logger.info("info message");
logger.warn("warn message");
logger.error("error message");

Configuration

All configuration changes to the Logger can be configured via the LoggerConfig.setUp() method.

Application Name

The application name is first piece of data that is displayed within a log. This can be used to easily identify what application the log refers to if multiple applications are writing to the same log file.

Exmaple

import { LoggerConfig } from "https://deno.land/x/crumb/mod.ts";

LoggerConfig.setUp({
    appName: "application-name",
});

Log Level

Logging output can be configured to only log messages that meet a certain log level threshold. For example, if the log level is set to WARN, then only logs which greater or equal to the WARN log level will be logged (i.e. WARN and ERROR logs).

By default, the log level is set to INFO. This means that only INFO, WARN, and ERROR logs will be logged.

Below shows how different log levels compare with each other:

DEBUG < INFO < WARN < ERROR

Example

import { LoggerConfig, LogLevel } from "https://deno.land/x/crumb/mod.ts";

LoggerConfig.setUp({
    level: LogLevel.ERROR,
});

License

Apache License 2.0