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Deprecate React.createMixin #8853
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This API was never fully implemented. Since mixins are no longer considered part of the future React API, it will be removed.
warning( | ||
warnedForCreateMixin, | ||
'React.createMixin is deprecated and should not be used. You ' + | ||
'can use your mixin directly instead.' |
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I considered adding some messaging here about mixins being considered harmful, but I'm not sure if that's overstepping since they're not actually considered deprecated.
warning( | ||
warnedForCreateMixin, | ||
'React.createMixin is deprecated and should not be used. You ' + | ||
'can use your mixin directly instead.' |
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"You can use your mixin" sounds a bit aggressive, maybe "You can use this mixin"?
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Fixed!
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Please merge after CI passes.
CI is failing, looks related to this: |
I don't think so. It seems like this was broken by #8858: we didn't run the tests in Fiber mode and one of the tests seems to assert a different warning message. |
One step towards #8852. This also adds tests for the deprecation warning, along with the
React.__spread
method. I didn't see a good place to stick these tests, so I just created a new__tests__
folder insrc/isomorphic
.