[Draft] @neodx/log - An advanced levels filtering

[secundant]

Currently, users can only specify the max level.

const logger = createLogger({
  level: 'done', // Log up to the "done" level
  target: [
    json(), // Write JSON logs for all levels that are <= "done" (without any additional restrictions)
    {
      level: 'warn', // Exclude logs higher than the "warn" level
      target: json({ target: myFile })
    }
  ] 
});

However, they cannot define the minimum or exclusive logic for them, resulting in the inability to define a flow for unnecessary or specific logs.

For example, we want to redirect all debug logs to the file. Additionally, all logs except for "error" should be sent to stdout, while "error" logs should be directed to stderr.

API Proposal

const logger = createLogger({
  name: 'my-app',
  // Define the global maximum level of logs that will be processed
  level: process.env.NODE_ENV === 'production' ? 'done' : 'debug',
  target: [
    // handle all logs
    handleAllLogs,
    {
      // handle only 'warn' and 'error' logs
      level: 'warn',
      target: handleWarnLogs
    },
    {
      // handle 'warn', 'info' and 'done' logs
      level: { min: 'warn', max: 'done' },
      target: handleRegularLogs
    },
    {
      // handle only 'debug' logs
      level: { min: 'debug', max: 'debug' },
      target: handleDebugLogs
    }
  ]
});