Error during server-render (ssr)

[CaptainN]

As noted over in meteor/react-packages#251, I'm getting an error when rendering with React's renderToNodeStream if I try to query the mongo database (without withTracker or useTracker).

W20190718-15:50:38.257(-4)? (STDERR) events.js:183
W20190718-15:50:38.259(-4)? (STDERR)       throw er; // Unhandled 'error' event
W20190718-15:50:38.259(-4)? (STDERR)       ^
W20190718-15:50:38.271(-4)? (STDERR) 
W20190718-15:50:38.272(-4)? (STDERR) AssertionError [ERR_ASSERTION]: Cannot await without a Fiber
W20190718-15:50:38.274(-4)? (STDERR)     at awaitPromise (C:\Users\Kevin\AppData\Local\.meteor\packages\promise\0.11.2\npm\node_modules\meteor-promise\promise_server.js:75:12)
W20190718-15:50:38.276(-4)? (STDERR)     at Promise.await (C:\Users\Kevin\AppData\Local\.meteor\packages\promise\0.11.2\npm\node_modules\meteor-promise\promise_server.js:60:12)
W20190718-15:50:38.278(-4)? (STDERR)     at SynchronousCursor._nextObject (packages/mongo/mongo_driver.js:1091:12)
W20190718-15:50:38.292(-4)? (STDERR)     at SynchronousCursor.forEach (packages/mongo/mongo_driver.js:1105:22)
W20190718-15:50:38.293(-4)? (STDERR)     at SynchronousCursor.map (packages/mongo/mongo_driver.js:1115:10)
W20190718-15:50:38.294(-4)? (STDERR)     at SynchronousCursor.fetch (packages/mongo/mongo_driver.js:1139:17)
W20190718-15:50:38.310(-4)? (STDERR)     at Cursor.(anonymous function) [as fetch] (packages/mongo/mongo_driver.js:887:44)
W20190718-15:50:38.310(-4)? (STDERR)     at packages/npdev:collections/both.js:10:6
W20190718-15:50:38.312(-4)? (STDERR)     at packages/npdev:collections/server-connector.js:27:18
W20190718-15:50:38.332(-4)? (STDERR)     at Page (imports/ui/pages/Page.js:4:30)
W20190718-15:50:38.334(-4)? (STDERR)     at processChild (C:\Users\Kevin\repos\meteor-react-starter\node_modules\react-dom\cjs\react-dom-server.node.development.js:2888:14)
W20190718-15:50:38.335(-4)? (STDERR)     at resolve (C:\Users\Kevin\repos\meteor-react-starter\node_modules\react-dom\cjs\react-dom-server.node.development.js:2812:5)
W20190718-15:50:38.337(-4)? (STDERR)     at ReactDOMServerRenderer.render (C:\Users\Kevin\repos\meteor-react-starter\node_modules\react-dom\cjs\react-dom-server.node.development.js:3202:22)
W20190718-15:50:38.340(-4)? (STDERR)     at ReactDOMServerRenderer.read (C:\Users\Kevin\repos\meteor-react-starter\node_modules\react-dom\cjs\react-dom-server.node.development.js:3161:29)
W20190718-15:50:38.341(-4)? (STDERR)     at ReactMarkupReadableStream._read (C:\Users\Kevin\repos\meteor-react-starter\node_modules\react-dom\cjs\react-dom-server.node.development.js:3698:38)
W20190718-15:50:38.341(-4)? (STDERR)     at ReactMarkupReadableStream.Readable.read (_stream_readable.js:442:10)
W20190718-15:50:38.342(-4)? (STDERR)     at resume_ (_stream_readable.js:822:12)
W20190718-15:50:38.343(-4)? (STDERR)     at _combinedTickCallback (internal/process/next_tick.js:139:11)
W20190718-15:50:38.343(-4)? (STDERR)     at process._tickCallback (internal/process/next_tick.js:181:9)

Since I'm not using react-meteor-data at all, I think this is a problem in core or in server-render.

There is an example which triggers the error in the renderToNodeStream branch of CaptainN/meteor-react-starter. It uses npdev:collections behind the scenes, which does not use withTracker through react-meteor-data. It runs a mongo query synchronously with the react render cycle.

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