fix(node): Generate a Sentry Release string from env if its not provided

[ahmedetefy]

This PR:

• Generates a Sentry Release string from env variables dynamically if its not provided on init

[github-actions]

size-limit report

Path	Size
@sentry/browser - CDN Bundle (gzipped)	20.59 KB (-0.01% 🔽)
@sentry/browser - Webpack	21.45 KB (0%)
@sentry/react - Webpack	21.49 KB (0%)
@sentry/browser + @sentry/tracing - CDN Bundle (gzipped)	27.8 KB (0%)

[kamilogorek]

tbh I'd prefer to have it undefined and setup options.release only conditionally. Otherwise we'll have unnecessary key in options.

[ahmedetefy]

tbh I'd prefer to have it undefined and setup options.release only conditionally. Otherwise we'll have unnecessary key in options.

Oh so you mean only if autoSessionTracking is enabled?

[kamilogorek]

More like:

if (options.release === undefined) {
  const detectedRelease = getSentryRelease();
  if (detectedRelease !== undefined) {
    options.release = detectedRelease;
  }
}

Otherwise we'll always end up with event.release: "" sent to server

[ahmedetefy]

More like:

if (options.release === undefined) {
  const detectedRelease = getSentryRelease();
  if (detectedRelease !== undefined) {
    options.release = detectedRelease;
  }
}

Otherwise we'll always end up with event.release: "" sent to server

Done!