Chang Yan 7350358374 add legacy context API warning in strict mode (#12849) ... * add legacy context APIs warning in strict mode * refactor if statement and the warning message * add other flags for type check * add component stack tree and refactor wording * fix the nits		2018-05-22 15:38:02 -07:00
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ReactFeatureFlags.js	add legacy context API warning in strict mode (#12849)	2018-05-22 15:38:02 -07:00