Logger

Logging in BeDoc

BeDoc provides a built-in logging utility that ensures consistent, structured, and aesthetically pleasing logs across the system. Instead of using console.log, actions such as parsers, printers, and hooks receive a Logger instance for unified logging.

Logging Levels

The logger offers four levels of logging, each serving a distinct purpose:

Level	Method	Purpose
Debug	this.log.debug(...)	Development & troubleshooting (only in debug mode)
Info	this.log.info(...)	General runtime messages
Warn	this.log.warn(...)	Indicates potential issues without stopping execution
Error	this.log.error(...)	Critical errors that require attention

Each log message is tagged and formatted consistently, making it easy to trace the source of logs.

Examples of Logging Levels

BeDoc’s logging framework ensures that messages are both informative and, when appropriate, entertaining.

• this.log.debug(string[, ...arg]): Debug messages

  async parse(file, content) {
    this.log.debug("This will only show in debug mode");
  }
  
  // [BeDoc] Debug: This will only show in debug mode

• this.log.info(string[, ...arg]): Informational messages

  async parse(file, content) {
    this.log.info("A wild Happy Fun Ball has appeared.");
  }
  
  // [BeDoc] Info: A wild Happy Fun Ball has appeared.

• this.log.warn(string[, ...arg]): Warning messages

  async parse(file, content) {
    this.log.warn("Do not taunt Happy Fun Ball.");
  }
  
  // [BeDoc] Warn: Do not taunt Happy Fun Ball.

• this.log.error(string[, ...arg]): Error messages

  async parse(file, content) {
    this.log.error("You have been eaten by Happy Fun Ball. 🙀");
  }
  
  // [BeDoc] Error: You have been eaten by Happy Fun Ball. 🙀

By standardizing logging across BeDoc, it ensures clear, useful logs for debugging and tracing execution.

Debug Logging Granularity

Debug logging in BeDoc is controlled by two primary settings:

• Debug Mode (--debug) → Enables debug logging, allowing this.log.debug(...) messages to appear.
• Debug Level (--debugLevel <level>) → Controls the verbosity of debug logs.

How Debug Mode Works

When --debug is enabled, any log messages at the debug level will be output alongside standard logs. If --debug is not set, debug messages are completely suppressed.

Example usage:

bedoc --debug --debugLevel 2

This command enables debug mode and sets the verbosity level to 2, providing additional insight into execution flow.

Debug Level (--debugLevel <level>)

The debug level allows for fine-grained control over logging verbosity. The higher the level, the more details are logged.

Debug Level	Description
0	Minimal output, only critical information
1	Basic debug details, startup/shutdown info
2	Intermediate details, action discovery, setup
3	Detailed processing logs, execution tracking
4	Very verbose logging, low-level internal details (nerd mode!)

Filtering by Debug Level

Debug messages are only displayed if the specified debugLevel meets or exceeds the message’s level.

For example:

this.log.debug("This is level 2 debug", 2);

• If --debugLevel 1 is set, this message will not appear.
• If --debugLevel 2 or higher is set, the message will be displayed.