diff --git a/compiler/crates/relay-typegen/src/typescript.rs b/compiler/crates/relay-typegen/src/typescript.rs
index 03c69e279df1f..478d1cd6afb47 100644
--- a/compiler/crates/relay-typegen/src/typescript.rs
+++ b/compiler/crates/relay-typegen/src/typescript.rs
@@ -278,11 +278,12 @@ impl TypeScriptPrinter {
                 }
                 Prop::GetterSetterPair(getter_setter_pair) => {
                     // Write the getter
+                    self.write_indentation()?;
                     write!(&mut self.result, "get ")?;
                     self.write(&AST::Identifier(getter_setter_pair.key))?;
                     write!(&mut self.result, "(): ")?;
                     self.write(&getter_setter_pair.getter_return_value)?;
-                    writeln!(&mut self.result, ",")?;
+                    writeln!(&mut self.result, ";")?;
 
                     // Write the setter
                     self.write_indentation()?;
@@ -290,7 +291,7 @@ impl TypeScriptPrinter {
                     self.write(&AST::Identifier(getter_setter_pair.key))?;
                     write!(&mut self.result, "(value: ")?;
                     self.write(&getter_setter_pair.setter_parameter)?;
-                    writeln!(&mut self.result, "): void,")?;
+                    writeln!(&mut self.result, ");")?;
                 }
             }
         }
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment-plural.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment-plural.expected
index d64c6f58ad964..0c32fcd40b0c5 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment-plural.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment-plural.expected
@@ -17,20 +17,20 @@ fragment Assignable_user on User @assignable {
 import { FragmentRefs } from "relay-runtime";
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get node(): {
+  get node(): {
     readonly __typename: "User";
-get parents(): ReadonlyArray<{}>,
+    get parents(): ReadonlyArray<{}>;
     set parents(value: ReadonlyArray<{
       readonly __typename: "User";
       readonly __id: string;
       readonly " $fragmentSpreads": "Assignable_user";
-    }>): void,
+    }>);
   } | {
     // This will never be '%other', but we need some
     // value in case none of the concrete values match.
     readonly __typename: "%other";
-  } | null,
-  set node(value: null | void): void,
+  } | null;
+  set node(value: null | void);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment.expected
index a931210f25274..2472a2e757d3f 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragment.expected
@@ -12,12 +12,12 @@ fragment Assignable_viewer on Viewer @assignable {
 import { FragmentRefs } from "relay-runtime";
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get viewer(): {} | null,
+  get viewer(): {} | null;
   set viewer(value: {
     readonly __typename: "Viewer";
     readonly __id: string;
     readonly " $fragmentSpreads": "Assignable_viewer";
-  } | null): void,
+  } | null);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragments-within-narrowing.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragments-within-narrowing.expected
index 1d9af2aef97f8..7fd56e290a157 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragments-within-narrowing.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-assignable-fragments-within-narrowing.expected
@@ -25,8 +25,8 @@ fragment Assignable_page on Page @assignable {
 import { FragmentRefs } from "relay-runtime";
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get me(): {
-get actor(): {
+  get me(): {
+    get actor(): {
       readonly __typename: "Page";
     } | {
       readonly __typename: "User";
@@ -34,7 +34,7 @@ get actor(): {
       // This will never be '%other', but we need some
       // value in case none of the concrete values match.
       readonly __typename: "%other";
-    } | null,
+    } | null;
     set actor(value: {
       readonly __typename: "Page";
       readonly __id: string;
@@ -43,9 +43,9 @@ get actor(): {
       readonly __typename: "User";
       readonly __id: string;
       readonly " $fragmentSpreads": "Assignable_user";
-    } | null): void,
-  } | null,
-  set me(value: null | void): void,
+    } | null);
+  } | null;
+  set me(value: null | void);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-multiple-assignable-fragments.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-multiple-assignable-fragments.expected
index eb70042fb762b..d61f64269d1ae 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-multiple-assignable-fragments.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-multiple-assignable-fragments.expected
@@ -21,11 +21,11 @@ fragment Assignable_page on Page @assignable {
 import { FragmentRefs } from "relay-runtime";
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get me(): {
-get actor(): {
+  get me(): {
+    get actor(): {
       lastName: string | null;
       name: string | null;
-    } | null,
+    } | null;
     set actor(value: {
       readonly __typename: "Page";
       readonly __id: string;
@@ -34,9 +34,9 @@ get actor(): {
       readonly __id: string;
       readonly __isAssignable_node: string;
       readonly " $fragmentSpreads": "Assignable_node";
-    } | null): void,
-  } | null,
-  set me(value: null | void): void,
+    } | null);
+  } | null;
+  set me(value: null | void);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-no-spreads.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-no-spreads.expected
index 8cefbf1569ebc..20c04d13ab445 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-no-spreads.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-no-spreads.expected
@@ -7,10 +7,10 @@ query UpdatableQuery @updatable {
 ==================================== OUTPUT ===================================
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get nodes(): ReadonlyArray<{
+  get nodes(): ReadonlyArray<{
     readonly id: string;
-  } | null> | null,
-  set nodes(value: []): void,
+  } | null> | null;
+  set nodes(value: []);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-with-spreads.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-with-spreads.expected
index b357f5cb934ae..4417f814bcd33 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-with-spreads.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-plural-field-with-spreads.expected
@@ -12,12 +12,12 @@ fragment Updatable_user on User @assignable {
 import { FragmentRefs } from "relay-runtime";
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get nodes(): ReadonlyArray<{} | null> | null,
+  get nodes(): ReadonlyArray<{} | null> | null;
   set nodes(value: ReadonlyArray<{
     readonly __typename: "User";
     readonly __id: string;
     readonly " $fragmentSpreads": "Updatable_user";
-  }>): void,
+  }>);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-special-fields.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-special-fields.expected
index 0f4a5fee2043e..fdd3893e6a778 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-special-fields.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-special-fields.expected
@@ -12,15 +12,15 @@ query UpdatableQuery @updatable {
 ==================================== OUTPUT ===================================
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get me(): {
+  get me(): {
     readonly __typename: "User";
     readonly __id: string;
     readonly aliased_double_under_id: string;
     readonly aliased_id: string;
     readonly aliased_typename: "User";
     readonly id: string;
-  } | null,
-  set me(value: null | void): void,
+  } | null;
+  set me(value: null | void);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-type-refinement.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-type-refinement.expected
index 7bcaa4120e9e3..df7e57550e734 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-type-refinement.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation-type-refinement.expected
@@ -17,22 +17,22 @@ query UpdatableQuery @updatable {
 ==================================== OUTPUT ===================================
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get maybeNodeInterface(): {
+  get maybeNodeInterface(): {
     readonly __typename: "NonNodeNoID";
     name: string | null;
   } | {
     readonly __typename: "Story";
     actorCount: number | null;
-get address(): {
+    get address(): {
       city: string | null;
-    } | null,
-    set address(value: null | void): void,
+    } | null;
+    set address(value: null | void);
   } | {
     // This will never be '%other', but we need some
     // value in case none of the concrete values match.
     readonly __typename: "%other";
-  } | null,
-  set maybeNodeInterface(value: null | void): void,
+  } | null;
+  set maybeNodeInterface(value: null | void);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation.expected b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation.expected
index bca9726a7fd0e..d8a05f586f7a6 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation.expected
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/fixtures/updatable-operation.expected
@@ -8,11 +8,11 @@ query UpdatableQuery @updatable {
 ==================================== OUTPUT ===================================
 export type UpdatableQuery$variables = {};
 export type UpdatableQuery$data = {
-get me(): {
+  get me(): {
     actorCount: number | null;
     name: string | null;
-  } | null,
-  set me(value: null | void): void,
+  } | null;
+  set me(value: null | void);
 };
 export type UpdatableQuery = {
   response: UpdatableQuery$data;
diff --git a/compiler/crates/relay-typegen/tests/generate_typescript/mod.rs b/compiler/crates/relay-typegen/tests/generate_typescript/mod.rs
index 462937972df9a..b825d64912db1 100644
--- a/compiler/crates/relay-typegen/tests/generate_typescript/mod.rs
+++ b/compiler/crates/relay-typegen/tests/generate_typescript/mod.rs
@@ -15,8 +15,8 @@ use common::SourceLocationKey;
 use fixture_tests::Fixture;
 use fnv::FnvBuildHasher;
 use fnv::FnvHashMap;
-use graphql_ir::OperationDefinitionName;
 use graphql_ir::build;
+use graphql_ir::OperationDefinitionName;
 use graphql_ir::Program;
 use graphql_syntax::parse_executable;
 use indexmap::IndexMap;