Implement bunyan adapter package (@logtape/adapter-bunyan)

[dahlia]

Summary

Create an adapter package to integrate LogTape with bunyan, allowing applications using bunyan to easily incorporate LogTape-enabled libraries.

Context

This is part of the adapter package initiative from #52. Winston and Pino adapters have been completed, and now we need to implement the bunyan adapter.

Requirements

• Create @logtape/adapter-bunyan package
• Implement getBunyanSink() function that bridges LogTape to bunyan
• Support both default and custom bunyan logger instances
• Map LogTape log levels to bunyan equivalents
• Handle structured logging appropriately (bunyan is inherently structured)
• Include comprehensive tests and documentation

Usage Example

import { configure } from "@logtape/logtape";
import { getBunyanSink } from "@logtape/adapter-bunyan";

await configure({
  sinks: {
    bunyan: getBunyanSink(), // Use default bunyan instance
    // or: getBunyanSink(existingBunyanLogger)
  },
  loggers: [
    { category: "awesome-pkg", sinks: ["bunyan"] }
  ]
});

Implementation Notes

• Follow the same patterns established in winston and pino adapters
• Leverage bunyan's structured logging capabilities effectively
• Consider bunyan's child logger functionality for category mapping
• Handle bunyan's serializers appropriately

Related

• Adapter packages for popular logging libraries #52 (parent issue - now closed)
• Follows winston adapter (@logtape/adapter-winston)
• Follows pino adapter (@logtape/adapter-pino)