Add logs to Deno SDK

[AbhiPrasad]

Description

Need to do some maintence work for deno v2 first.

[nooga]

There is a workaround that works in Deno 2, tested with @sentry/deno@^9.32.0.

    "@sentry/deno": "npm:@sentry/deno@^9.32.0",
    "@sentry/node": "npm:@sentry/node@^9.32.0",

You can access Sentry.logger from the @sentry/node module even if your setup is done via @sentry/deno. Do not use the Sentry.logger provided by @sentry/core - this is an internal SDK logger and not the one that sends the log records to Sentry :)

Here's an example of @std/log-compatible handler:

import * as Sentry from "@sentry/node"; // notice - this is node
import * as log from "@std/log";

import { LogLevels } from "@std/log/levels";

export class SentryHandler extends log.BaseHandler {
  override log(msg: string): void {
    // no op, we already sent data in handle
  }

  override handle(logRecord: log.LogRecord): void {
    switch (logRecord.level) {
      case LogLevels.DEBUG:
        Sentry.logger.debug(logRecord.msg, logRecord.args);
        break;
      case LogLevels.INFO:
        Sentry.logger.info(logRecord.msg, logRecord.args);
        break;
      case LogLevels.WARN:
        Sentry.logger.warn(logRecord.msg, logRecord.args);
        break;
      case LogLevels.ERROR:
        Sentry.logger.error(logRecord.msg, logRecord.args);
        break;
      case LogLevels.CRITICAL:
        Sentry.logger.fatal(logRecord.msg, logRecord.args);
        break;
      default:
        Sentry.logger.trace(logRecord.msg, logRecord.args);
        break;
    }
  }

  constructor(level: log.LevelName, options?: log.BaseHandlerOptions) {
    super(level, options);
  }
}

and then use like this:

import * as Sentry from "@sentry/deno"; // notice - this is deno
import * as log from "@std/log";

// this is the "Deno Sentry" init
Sentry.init({
  dsn: Deno.env.get("SENTRY_DSN"),
  _experiments: {
    enableLogs: true, // crucial!
  }
});

// init @std/log
log.setup({
  handlers: {
    // console: { .... },
    sentry: new SentryHandler("DEBUG")
  },
  loggers: {
    default: {
      level: "DEBUG",
      handlers: ["console", "sentry"]
    }
  }
});