Files
react-native/Libraries/Core/Devtools
Christoph Nakazawa db9fc38893 Log console.log invocations to the Metro terminal.
Summary:
People ask "How do you use `console.log` with React Native?" and there is no good answer. This diff aims to stop people from asking this question.

See https://fb.workplace.com/groups/rn.core/permalink/2372327062999018/ for context.

This logging relies on network requests which can cause logs to show up out-of-order. To reduce the likelihood I queue every log message on the server for a maximum of 200ms. There could be other methods, like using websocket, but that seems more complex than is necessary at least in the beginning.

I considered various throttling strategies because this could be quite chatty and possibly problematic, however I think we can just ship this and iterate based on feedback. On my very underpowered laptop I logged a random number every 10 milliseconds and it didn't cause any issues or slowdown.

Reviewed By: gaearon

Differential Revision: D15559151

fbshipit-source-id: 552001622af0937ae3a37d2bd8c1b96e7ca52020
2019-05-31 00:45:03 -07:00
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