Improve error message for components in bad states (missing instance) - #6990
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| @@ -509,6 +509,12 @@ var ReactCompositeComponentMixin = { | |||
| return; | |||
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I guess we actually already fail silently here (unset in the same place as ._instance). So we don't need this check.
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Oh yeah, will remove.
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lgtm, feel free to "squash and merge" |
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…react#6990) (cherry picked from commit 7988aca)
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In unknown circumstances (possible due to errors thrown elsewhere), it is possible for React components to enter a bad state where
this._instanceis unset but component state change can continue to happen. This leads to unhelpful error messages like:This adds invariants that assert
this._instanceexists. If the component is in a bad state, we will now instead warn with a more descriptive error message and — more importantly — the component's name.