GraphQL Nullability Design
Every field is nullable by default and made non-null with `!`; because a null in a non-null field destroys the whole parent selection during error propagation, non-null is a promise about failure behavior, not just data shape — mark fields non-null only when you can always deliver them.
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Every field is nullable by default and made non-null with `!`; because a null in a non-null field destroys the whole parent selection during error propagation, non-null is a promise about failure behavior, not just data shape — mark fields non-null only when you can always deliver them.
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