Commits on Aug 22, 2020

1. [New] jsx-no-constructed-context-values: add new rule which checks … …

   …when the value passed to a Context Provider will cause needless rerenders
   
   Adds a new rule that checks if the value prop passed to a Context Provider will cause needless rerenders. A common example is inline object
   declaration such as:
   ```js
   <Context.Provider value={{foo: 'bar'}}>
   ...
   </Context.Provider>
   ```
   which will cause the Context to rerender every time this is run because the object is defined with a new reference. This can lead to
   performance hits since not only will this rerender all the children of a context, it will also update all consumers of the value. The
   search React does to search the tree can also be very expensive. Some other instances that this rule covers are: array declarations,
   function declarations (i.e. arrow functions), or new class object instantians.

   

   Dylan Oshima authored and ljharb committed Aug 22, 2020
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