Greg Spencer de884f1afe
Remove the nullOk parameter from Navigator.of and add Navigator.maybeOf (#70726)
Adds Navigator.maybeOf to replace calling Navigator.of(context, nullOk: true), and removes the nullOk parameter. Also changes Navigator.of to return a non-nullable value, and removes many (120!) instances of the ! operator, reducing the possible places where a null dereference could occur.
2020-11-20 09:10:46 -08:00
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2020-10-30 21:23:02 -07:00
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