Is 'Symbol' polyfill required for 5.7.0? #2271

• Review the documentation: https://docs.sentry.io/
• Search for existing issues: https://github.com/getsentry/sentry-javascript/issues
• Use the latest release: https://github.com/getsentry/sentry-javascript/releases
• Provide a link to the affected event from your Sentry account

Package + Version

• @sentry/browser
• @sentry/node
• raven-js
• raven-node (raven for node)
• other:

Version:

5.7.0

Description

I am upgrading Sentry SDK for browser from 5.5.0 to 5.7.0.
But as of 5.7.0, Sentry does not work on IE 11 since IE lacks of Symbol:

'Symbol' is undefined

It seems related to the following code and might have to be handled by 0c83dbc:

https://github.com/getsentry/sentry-javascript/blob/5.7.0/packages/utils/src/syncpromise.ts#L40