Mark semantic nullability config option as experimental

captbaritone · captbaritone · commit c84e0b46e295 · 2024-01-27T13:55:41.000-08:00
diff --git a/compiler/crates/relay-config/src/typegen_config.rs b/compiler/crates/relay-config/src/typegen_config.rs
@@ -115,13 +115,17 @@ pub struct TypegenConfig {
     #[serde(default)]
     pub typescript_exclude_undefined_from_nullable_union: bool,
 
-    /// If your environment is configured to handles errors out of band, either via
+    /// EXPERIMENTAL: If your environment is configured to handles errors out of band, either via
     /// a network layer which discards responses with errors, or via enabling strict
     /// error handling in the runtime, you can enable this flag to have Relay generate
     /// non-null types for fields which are marked as semantically non-null in
     /// the schema.
+    ///
+    /// Currently semantically non-null fields must be specified in your schema
+    /// using the `@semanticNonNull` directive as specified in:
+    /// https://github.com/apollographql/specs/pull/42
     #[serde(default)]
-    pub emit_semantic_nullability_types: bool,
+    pub experimental_emit_semantic_nullability_types: bool,
 }
 
 #[derive(Default, Debug, Serialize, Deserialize, Clone, Copy)]
diff --git a/compiler/crates/relay-typegen/src/visit.rs b/compiler/crates/relay-typegen/src/visit.rs
@@ -2434,7 +2434,7 @@ fn field_type(field: &Field, typegen_options: &'_ TypegenContext<'_>) -> TypeRef
     if typegen_options
         .project_config
         .typegen_config
-        .emit_semantic_nullability_types
+        .experimental_emit_semantic_nullability_types
     {
         field.semantic_type()
     } else {
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_in_raw_response.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_in_raw_response.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 query MyQuery @raw_response_type {
   opera {
     composer {
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_in_raw_response.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_in_raw_response.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 query MyQuery @raw_response_type {
   opera {
     composer {
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_items_in_matrix.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_items_in_matrix.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on Screen {
   pixels
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_items_in_matrix.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_items_in_matrix.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on Screen {
   pixels
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_resolver.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_resolver.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend @waterfall {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_resolver.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_resolver.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend @waterfall {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_weak_resolver.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_weak_resolver.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   blob {
     data
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_weak_resolver.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_liked_field_weak_resolver.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   blob {
     data
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_linked_field.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_linked_field.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_linked_field.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_linked_field.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_and_list_item.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_and_list_item.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_and_list_item.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_and_list_item.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_item.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_item.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_item.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_list_item.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_feature_disabled.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_feature_disabled.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# Note: No comment here enabling `emit_semantic_nullability_types`
+# Note: No comment here enabling `experimental_emit_semantic_nullability_types`
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_feature_disabled.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_feature_disabled.graphql
@@ -1,4 +1,4 @@
-# Note: No comment here enabling `emit_semantic_nullability_types`
+# Note: No comment here enabling `experimental_emit_semantic_nullability_types`
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_required.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_required.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name @required(action: LOG)
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_required.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_required.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name @required(action: LOG)
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_resolver.expected b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_resolver.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_resolver.graphql b/compiler/crates/relay-typegen/tests/generate_flow/fixtures/semantic_non_null_scalar_resolver.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_flow/mod.rs b/compiler/crates/relay-typegen/tests/generate_flow/mod.rs
@@ -92,9 +92,9 @@ pub async fn transform_fixture(fixture: &Fixture<'_>) -> Result<String, String>
         typegen_config: TypegenConfig {
             language: TypegenLanguage::Flow,
             custom_scalar_types,
-            emit_semantic_nullability_types: fixture
+            experimental_emit_semantic_nullability_types: fixture
                 .content
-                .contains("# relay:emit_semantic_nullability_types"),
+                .contains("# relay:experimental_emit_semantic_nullability_types"),
             ..Default::default()
         },
         ..Default::default()
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_in_raw_response.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_in_raw_response.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 query MyQuery @raw_response_type {
   opera {
     composer {
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_in_raw_response.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_in_raw_response.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 query MyQuery @raw_response_type {
   opera {
     composer {
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_items_in_matrix.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_items_in_matrix.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on Screen {
   pixels
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_items_in_matrix.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_items_in_matrix.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on Screen {
   pixels
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_resolver.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_resolver.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend @waterfall {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_resolver.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_resolver.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend @waterfall {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_weak_resolver.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_weak_resolver.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   blob {
     data
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_weak_resolver.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_liked_field_weak_resolver.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   blob {
     data
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_linked_field.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_linked_field.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_linked_field.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_linked_field.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   best_friend {
     name
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_and_list_item.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_and_list_item.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_and_list_item.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_and_list_item.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_item.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_item.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_item.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_list_item.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   favorite_numbers
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_feature_disabled.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_feature_disabled.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# Note: No comment here enabling `emit_semantic_nullability_types`
+# Note: No comment here enabling `experimental_emit_semantic_nullability_types`
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_feature_disabled.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_feature_disabled.graphql
@@ -1,4 +1,4 @@
-# Note: No comment here enabling `emit_semantic_nullability_types`
+# Note: No comment here enabling `experimental_emit_semantic_nullability_types`
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_required.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_required.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name @required(action: LOG)
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_required.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_required.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name @required(action: LOG)
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_resolver.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_resolver.expected
@@ -1,5 +1,5 @@
 ==================================== INPUT ====================================
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_resolver.graphql b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/semantic_non_null_scalar_resolver.graphql
@@ -1,4 +1,4 @@
-# relay:emit_semantic_nullability_types
+# relay:experimental_emit_semantic_nullability_types
 fragment MyFragment on ClientUser {
   name
 }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/mod.rs b/compiler/crates/relay-typegen/tests/generate_typescript/mod.rs
@@ -72,9 +72,9 @@ pub async fn transform_fixture(fixture: &Fixture<'_>) -> Result<String, String>
             use_import_type_syntax: fixture
                 .content
                 .contains("# typegen_config.use_import_type_syntax = true"),
-            emit_semantic_nullability_types: fixture
+            experimental_emit_semantic_nullability_types: fixture
                 .content
-                .contains("# relay:emit_semantic_nullability_types"),
+                .contains("# relay:experimental_emit_semantic_nullability_types"),
             ..Default::default()
         },
         feature_flags: Arc::new(FeatureFlags {

Original file line number	Diff line number	Diff line change
`@@ -2434,7 +2434,7 @@ fn field_type(field: &Field, typegen_options: &'_ TypegenContext<'_>) -> TypeRef`
`2434`	`2434`	`if typegen_options`
`2435`	`2435`	`.project_config`
`2436`	`2436`	`.typegen_config`
`2437`		`- .emit_semantic_nullability_types`
	`2437`	`+ .experimental_emit_semantic_nullability_types`
`2438`	`2438`	`{`
`2439`	`2439`	`field.semantic_type()`
`2440`	`2440`	`} else {`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# relay:emit_semantic_nullability_types`
	`1`	`+# relay:experimental_emit_semantic_nullability_types`
`2`	`2`	`query MyQuery @raw_response_type {`
`3`	`3`	`opera {`
`4`	`4`	`composer {`
Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,5 @@`
`1`	`1`	`==================================== INPUT ====================================`
`2`		`-# relay:emit_semantic_nullability_types`
	`2`	`+# relay:experimental_emit_semantic_nullability_types`
`3`	`3`	`fragment MyFragment on Screen {`
`4`	`4`	`pixels`
`5`	`5`	`}`