diff --git a/.changeset/shy-experts-pump.md b/.changeset/shy-experts-pump.md
new file mode 100644
index 00000000..7957ec64
--- /dev/null
+++ b/.changeset/shy-experts-pump.md
@@ -0,0 +1,5 @@
+---
+"@gql.tada/internal": patch
+---
+
+Output introspection type separately in `d.ts` output typings file. This avoids a serialization error in composite TypeScript projects.
diff --git a/examples/example-pokemon-api/src/graphql-env.d.ts b/examples/example-pokemon-api/src/graphql-env.d.ts
index 22ac94ee..f7c08876 100644
--- a/examples/example-pokemon-api/src/graphql-env.d.ts
+++ b/examples/example-pokemon-api/src/graphql-env.d.ts
@@ -1,6 +1,21 @@
 /* eslint-disable */
 /* prettier-ignore */
 
+export type introspection_types = {
+    'Attack': { kind: 'OBJECT'; name: 'Attack'; fields: { 'damage': { name: 'damage'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'type': { name: 'type'; type: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; } }; }; };
+    'AttacksConnection': { kind: 'OBJECT'; name: 'AttacksConnection'; fields: { 'fast': { name: 'fast'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; 'special': { name: 'special'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; }; };
+    'Boolean': unknown;
+    'EvolutionRequirement': { kind: 'OBJECT'; name: 'EvolutionRequirement'; fields: { 'amount': { name: 'amount'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
+    'Float': unknown;
+    'ID': unknown;
+    'Int': unknown;
+    'Pokemon': { kind: 'OBJECT'; name: 'Pokemon'; fields: { 'attacks': { name: 'attacks'; type: { kind: 'OBJECT'; name: 'AttacksConnection'; ofType: null; } }; 'classification': { name: 'classification'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'evolutionRequirements': { name: 'evolutionRequirements'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'EvolutionRequirement'; ofType: null; }; } }; 'evolutions': { name: 'evolutions'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; 'fleeRate': { name: 'fleeRate'; type: { kind: 'SCALAR'; name: 'Float'; ofType: null; } }; 'height': { name: 'height'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; 'id': { name: 'id'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'ID'; ofType: null; }; } }; 'maxCP': { name: 'maxCP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'maxHP': { name: 'maxHP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'String'; ofType: null; }; } }; 'resistant': { name: 'resistant'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'types': { name: 'types'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weaknesses': { name: 'weaknesses'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weight': { name: 'weight'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; }; };
+    'PokemonDimension': { kind: 'OBJECT'; name: 'PokemonDimension'; fields: { 'maximum': { name: 'maximum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'minimum': { name: 'minimum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
+    'PokemonType': { name: 'PokemonType'; enumValues: 'Bug' | 'Dark' | 'Dragon' | 'Electric' | 'Fairy' | 'Fighting' | 'Fire' | 'Flying' | 'Ghost' | 'Grass' | 'Ground' | 'Ice' | 'Normal' | 'Poison' | 'Psychic' | 'Rock' | 'Steel' | 'Water'; };
+    'Query': { kind: 'OBJECT'; name: 'Query'; fields: { 'pokemon': { name: 'pokemon'; type: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; } }; 'pokemons': { name: 'pokemons'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; }; };
+    'String': unknown;
+};
+
 /** An IntrospectionQuery representation of your schema.
  *
  * @remarks
@@ -14,20 +29,13 @@ export type introspection = {
   query: 'Query';
   mutation: never;
   subscription: never;
-  types: {
-    'Attack': { kind: 'OBJECT'; name: 'Attack'; fields: { 'damage': { name: 'damage'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'type': { name: 'type'; type: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; } }; }; };
-    'AttacksConnection': { kind: 'OBJECT'; name: 'AttacksConnection'; fields: { 'fast': { name: 'fast'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; 'special': { name: 'special'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; }; };
-    'Boolean': unknown;
-    'EvolutionRequirement': { kind: 'OBJECT'; name: 'EvolutionRequirement'; fields: { 'amount': { name: 'amount'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
-    'Float': unknown;
-    'ID': unknown;
-    'Int': unknown;
-    'Pokemon': { kind: 'OBJECT'; name: 'Pokemon'; fields: { 'attacks': { name: 'attacks'; type: { kind: 'OBJECT'; name: 'AttacksConnection'; ofType: null; } }; 'classification': { name: 'classification'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'evolutionRequirements': { name: 'evolutionRequirements'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'EvolutionRequirement'; ofType: null; }; } }; 'evolutions': { name: 'evolutions'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; 'fleeRate': { name: 'fleeRate'; type: { kind: 'SCALAR'; name: 'Float'; ofType: null; } }; 'height': { name: 'height'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; 'id': { name: 'id'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'ID'; ofType: null; }; } }; 'maxCP': { name: 'maxCP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'maxHP': { name: 'maxHP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'String'; ofType: null; }; } }; 'resistant': { name: 'resistant'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'types': { name: 'types'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weaknesses': { name: 'weaknesses'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weight': { name: 'weight'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; }; };
-    'PokemonDimension': { kind: 'OBJECT'; name: 'PokemonDimension'; fields: { 'maximum': { name: 'maximum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'minimum': { name: 'minimum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
-    'PokemonType': { name: 'PokemonType'; enumValues: 'Bug' | 'Dark' | 'Dragon' | 'Electric' | 'Fairy' | 'Fighting' | 'Fire' | 'Flying' | 'Ghost' | 'Grass' | 'Ground' | 'Ice' | 'Normal' | 'Poison' | 'Psychic' | 'Rock' | 'Steel' | 'Water'; };
-    'Query': { kind: 'OBJECT'; name: 'Query'; fields: { 'pokemon': { name: 'pokemon'; type: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; } }; 'pokemons': { name: 'pokemons'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; }; };
-    'String': unknown;
-  };
+  types: introspection_types;
 };
 
 import * as gqlTada from 'gql.tada';
+
+declare module 'gql.tada' {
+  interface setupSchema {
+    introspection: introspection
+  }
+}
\ No newline at end of file
diff --git a/examples/example-pokemon-svelte/src/graphql-env.d.ts b/examples/example-pokemon-svelte/src/graphql-env.d.ts
index 22ac94ee..f7c08876 100644
--- a/examples/example-pokemon-svelte/src/graphql-env.d.ts
+++ b/examples/example-pokemon-svelte/src/graphql-env.d.ts
@@ -1,6 +1,21 @@
 /* eslint-disable */
 /* prettier-ignore */
 
+export type introspection_types = {
+    'Attack': { kind: 'OBJECT'; name: 'Attack'; fields: { 'damage': { name: 'damage'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'type': { name: 'type'; type: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; } }; }; };
+    'AttacksConnection': { kind: 'OBJECT'; name: 'AttacksConnection'; fields: { 'fast': { name: 'fast'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; 'special': { name: 'special'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; }; };
+    'Boolean': unknown;
+    'EvolutionRequirement': { kind: 'OBJECT'; name: 'EvolutionRequirement'; fields: { 'amount': { name: 'amount'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
+    'Float': unknown;
+    'ID': unknown;
+    'Int': unknown;
+    'Pokemon': { kind: 'OBJECT'; name: 'Pokemon'; fields: { 'attacks': { name: 'attacks'; type: { kind: 'OBJECT'; name: 'AttacksConnection'; ofType: null; } }; 'classification': { name: 'classification'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'evolutionRequirements': { name: 'evolutionRequirements'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'EvolutionRequirement'; ofType: null; }; } }; 'evolutions': { name: 'evolutions'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; 'fleeRate': { name: 'fleeRate'; type: { kind: 'SCALAR'; name: 'Float'; ofType: null; } }; 'height': { name: 'height'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; 'id': { name: 'id'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'ID'; ofType: null; }; } }; 'maxCP': { name: 'maxCP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'maxHP': { name: 'maxHP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'String'; ofType: null; }; } }; 'resistant': { name: 'resistant'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'types': { name: 'types'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weaknesses': { name: 'weaknesses'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weight': { name: 'weight'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; }; };
+    'PokemonDimension': { kind: 'OBJECT'; name: 'PokemonDimension'; fields: { 'maximum': { name: 'maximum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'minimum': { name: 'minimum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
+    'PokemonType': { name: 'PokemonType'; enumValues: 'Bug' | 'Dark' | 'Dragon' | 'Electric' | 'Fairy' | 'Fighting' | 'Fire' | 'Flying' | 'Ghost' | 'Grass' | 'Ground' | 'Ice' | 'Normal' | 'Poison' | 'Psychic' | 'Rock' | 'Steel' | 'Water'; };
+    'Query': { kind: 'OBJECT'; name: 'Query'; fields: { 'pokemon': { name: 'pokemon'; type: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; } }; 'pokemons': { name: 'pokemons'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; }; };
+    'String': unknown;
+};
+
 /** An IntrospectionQuery representation of your schema.
  *
  * @remarks
@@ -14,20 +29,13 @@ export type introspection = {
   query: 'Query';
   mutation: never;
   subscription: never;
-  types: {
-    'Attack': { kind: 'OBJECT'; name: 'Attack'; fields: { 'damage': { name: 'damage'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'type': { name: 'type'; type: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; } }; }; };
-    'AttacksConnection': { kind: 'OBJECT'; name: 'AttacksConnection'; fields: { 'fast': { name: 'fast'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; 'special': { name: 'special'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; }; };
-    'Boolean': unknown;
-    'EvolutionRequirement': { kind: 'OBJECT'; name: 'EvolutionRequirement'; fields: { 'amount': { name: 'amount'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
-    'Float': unknown;
-    'ID': unknown;
-    'Int': unknown;
-    'Pokemon': { kind: 'OBJECT'; name: 'Pokemon'; fields: { 'attacks': { name: 'attacks'; type: { kind: 'OBJECT'; name: 'AttacksConnection'; ofType: null; } }; 'classification': { name: 'classification'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'evolutionRequirements': { name: 'evolutionRequirements'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'EvolutionRequirement'; ofType: null; }; } }; 'evolutions': { name: 'evolutions'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; 'fleeRate': { name: 'fleeRate'; type: { kind: 'SCALAR'; name: 'Float'; ofType: null; } }; 'height': { name: 'height'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; 'id': { name: 'id'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'ID'; ofType: null; }; } }; 'maxCP': { name: 'maxCP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'maxHP': { name: 'maxHP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'String'; ofType: null; }; } }; 'resistant': { name: 'resistant'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'types': { name: 'types'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weaknesses': { name: 'weaknesses'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weight': { name: 'weight'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; }; };
-    'PokemonDimension': { kind: 'OBJECT'; name: 'PokemonDimension'; fields: { 'maximum': { name: 'maximum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'minimum': { name: 'minimum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
-    'PokemonType': { name: 'PokemonType'; enumValues: 'Bug' | 'Dark' | 'Dragon' | 'Electric' | 'Fairy' | 'Fighting' | 'Fire' | 'Flying' | 'Ghost' | 'Grass' | 'Ground' | 'Ice' | 'Normal' | 'Poison' | 'Psychic' | 'Rock' | 'Steel' | 'Water'; };
-    'Query': { kind: 'OBJECT'; name: 'Query'; fields: { 'pokemon': { name: 'pokemon'; type: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; } }; 'pokemons': { name: 'pokemons'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; }; };
-    'String': unknown;
-  };
+  types: introspection_types;
 };
 
 import * as gqlTada from 'gql.tada';
+
+declare module 'gql.tada' {
+  interface setupSchema {
+    introspection: introspection
+  }
+}
\ No newline at end of file
diff --git a/examples/example-pokemon-vue/src/graphql-env.d.ts b/examples/example-pokemon-vue/src/graphql-env.d.ts
index 22ac94ee..f7c08876 100644
--- a/examples/example-pokemon-vue/src/graphql-env.d.ts
+++ b/examples/example-pokemon-vue/src/graphql-env.d.ts
@@ -1,6 +1,21 @@
 /* eslint-disable */
 /* prettier-ignore */
 
+export type introspection_types = {
+    'Attack': { kind: 'OBJECT'; name: 'Attack'; fields: { 'damage': { name: 'damage'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'type': { name: 'type'; type: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; } }; }; };
+    'AttacksConnection': { kind: 'OBJECT'; name: 'AttacksConnection'; fields: { 'fast': { name: 'fast'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; 'special': { name: 'special'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; }; };
+    'Boolean': unknown;
+    'EvolutionRequirement': { kind: 'OBJECT'; name: 'EvolutionRequirement'; fields: { 'amount': { name: 'amount'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
+    'Float': unknown;
+    'ID': unknown;
+    'Int': unknown;
+    'Pokemon': { kind: 'OBJECT'; name: 'Pokemon'; fields: { 'attacks': { name: 'attacks'; type: { kind: 'OBJECT'; name: 'AttacksConnection'; ofType: null; } }; 'classification': { name: 'classification'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'evolutionRequirements': { name: 'evolutionRequirements'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'EvolutionRequirement'; ofType: null; }; } }; 'evolutions': { name: 'evolutions'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; 'fleeRate': { name: 'fleeRate'; type: { kind: 'SCALAR'; name: 'Float'; ofType: null; } }; 'height': { name: 'height'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; 'id': { name: 'id'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'ID'; ofType: null; }; } }; 'maxCP': { name: 'maxCP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'maxHP': { name: 'maxHP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'String'; ofType: null; }; } }; 'resistant': { name: 'resistant'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'types': { name: 'types'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weaknesses': { name: 'weaknesses'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weight': { name: 'weight'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; }; };
+    'PokemonDimension': { kind: 'OBJECT'; name: 'PokemonDimension'; fields: { 'maximum': { name: 'maximum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'minimum': { name: 'minimum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
+    'PokemonType': { name: 'PokemonType'; enumValues: 'Bug' | 'Dark' | 'Dragon' | 'Electric' | 'Fairy' | 'Fighting' | 'Fire' | 'Flying' | 'Ghost' | 'Grass' | 'Ground' | 'Ice' | 'Normal' | 'Poison' | 'Psychic' | 'Rock' | 'Steel' | 'Water'; };
+    'Query': { kind: 'OBJECT'; name: 'Query'; fields: { 'pokemon': { name: 'pokemon'; type: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; } }; 'pokemons': { name: 'pokemons'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; }; };
+    'String': unknown;
+};
+
 /** An IntrospectionQuery representation of your schema.
  *
  * @remarks
@@ -14,20 +29,13 @@ export type introspection = {
   query: 'Query';
   mutation: never;
   subscription: never;
-  types: {
-    'Attack': { kind: 'OBJECT'; name: 'Attack'; fields: { 'damage': { name: 'damage'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'type': { name: 'type'; type: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; } }; }; };
-    'AttacksConnection': { kind: 'OBJECT'; name: 'AttacksConnection'; fields: { 'fast': { name: 'fast'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; 'special': { name: 'special'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Attack'; ofType: null; }; } }; }; };
-    'Boolean': unknown;
-    'EvolutionRequirement': { kind: 'OBJECT'; name: 'EvolutionRequirement'; fields: { 'amount': { name: 'amount'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
-    'Float': unknown;
-    'ID': unknown;
-    'Int': unknown;
-    'Pokemon': { kind: 'OBJECT'; name: 'Pokemon'; fields: { 'attacks': { name: 'attacks'; type: { kind: 'OBJECT'; name: 'AttacksConnection'; ofType: null; } }; 'classification': { name: 'classification'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'evolutionRequirements': { name: 'evolutionRequirements'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'EvolutionRequirement'; ofType: null; }; } }; 'evolutions': { name: 'evolutions'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; 'fleeRate': { name: 'fleeRate'; type: { kind: 'SCALAR'; name: 'Float'; ofType: null; } }; 'height': { name: 'height'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; 'id': { name: 'id'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'ID'; ofType: null; }; } }; 'maxCP': { name: 'maxCP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'maxHP': { name: 'maxHP'; type: { kind: 'SCALAR'; name: 'Int'; ofType: null; } }; 'name': { name: 'name'; type: { kind: 'NON_NULL'; name: never; ofType: { kind: 'SCALAR'; name: 'String'; ofType: null; }; } }; 'resistant': { name: 'resistant'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'types': { name: 'types'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weaknesses': { name: 'weaknesses'; type: { kind: 'LIST'; name: never; ofType: { kind: 'ENUM'; name: 'PokemonType'; ofType: null; }; } }; 'weight': { name: 'weight'; type: { kind: 'OBJECT'; name: 'PokemonDimension'; ofType: null; } }; }; };
-    'PokemonDimension': { kind: 'OBJECT'; name: 'PokemonDimension'; fields: { 'maximum': { name: 'maximum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; 'minimum': { name: 'minimum'; type: { kind: 'SCALAR'; name: 'String'; ofType: null; } }; }; };
-    'PokemonType': { name: 'PokemonType'; enumValues: 'Bug' | 'Dark' | 'Dragon' | 'Electric' | 'Fairy' | 'Fighting' | 'Fire' | 'Flying' | 'Ghost' | 'Grass' | 'Ground' | 'Ice' | 'Normal' | 'Poison' | 'Psychic' | 'Rock' | 'Steel' | 'Water'; };
-    'Query': { kind: 'OBJECT'; name: 'Query'; fields: { 'pokemon': { name: 'pokemon'; type: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; } }; 'pokemons': { name: 'pokemons'; type: { kind: 'LIST'; name: never; ofType: { kind: 'OBJECT'; name: 'Pokemon'; ofType: null; }; } }; }; };
-    'String': unknown;
-  };
+  types: introspection_types;
 };
 
 import * as gqlTada from 'gql.tada';
+
+declare module 'gql.tada' {
+  interface setupSchema {
+    introspection: introspection
+  }
+}
\ No newline at end of file
diff --git a/packages/internal/src/introspection/output.ts b/packages/internal/src/introspection/output.ts
index ddbe7ad0..cc1f3671 100644
--- a/packages/internal/src/introspection/output.ts
+++ b/packages/internal/src/introspection/output.ts
@@ -3,7 +3,9 @@ import type { IntrospectionResult } from '../loaders';
 
 import { TadaError } from '../errors';
 import { PREAMBLE_IGNORE, ANNOTATION_DTS, ANNOTATION_TS } from './constants';
-import { preprocessIntrospection } from './preprocess';
+import { preprocessIntrospection, preprocessIntrospectionTypes } from './preprocess';
+
+const TYPES_VAR = 'introspection_types';
 
 const stringifyJson = (input: unknown | string): string =>
   typeof input === 'string' ? input : JSON.stringify(input, null, 2);
@@ -18,16 +20,23 @@ export function outputIntrospectionFile(
   opts: OutputIntrospectionFileOptions
 ): string {
   if (/\.d\.ts$/.test(opts.fileType)) {
-    const json =
-      typeof introspection !== 'string' && opts.shouldPreprocess
-        ? preprocessIntrospection(introspection)
-        : stringifyJson(introspection);
-    const out = [
-      PREAMBLE_IGNORE,
-      ANNOTATION_DTS,
-      `export type introspection = ${json};\n`,
-      "import * as gqlTada from 'gql.tada';\n",
-    ];
+    const out = [PREAMBLE_IGNORE];
+    if (typeof introspection !== 'string' && opts.shouldPreprocess) {
+      // NOTE: When types aren't exported separately, composite tsconfigs
+      // will output a serialization error in diagnostics
+      out.push(
+        `export type ${TYPES_VAR} = ${preprocessIntrospectionTypes(introspection)};\n`,
+        ANNOTATION_DTS,
+        `export type introspection = ${preprocessIntrospection(introspection, TYPES_VAR)};\n`,
+        `import * as gqlTada from 'gql.tada';\n`
+      );
+    } else {
+      out.push(
+        ANNOTATION_DTS,
+        `export type introspection = ${stringifyJson(introspection)};\n`,
+        "import * as gqlTada from 'gql.tada';\n"
+      );
+    }
     // NOTE: When the `name` option is used and multiple schemas are present,
     // we omit the automatic schema declaration and rely on the user calling
     // `initGraphQLTada()` themselves
diff --git a/packages/internal/src/introspection/preprocess.ts b/packages/internal/src/introspection/preprocess.ts
index d4c8cb91..b5bb5587 100644
--- a/packages/internal/src/introspection/preprocess.ts
+++ b/packages/internal/src/introspection/preprocess.ts
@@ -82,28 +82,33 @@ export const printIntrospectionType = (type: IntrospectionType) => {
   }
 };
 
-export function preprocessIntrospection(
+export function preprocessIntrospectionTypes(
   introspection: IntrospectionResult | IntrospectionQuery
 ): string {
-  const { __schema: schema } = introspection;
-  const name = 'name' in introspection ? introspection.name : undefined;
-  const queryName = printName(schema.queryType.name);
-  const mutationName = printName(schema.mutationType && schema.mutationType.name);
-  const subscriptionName = printName(schema.subscriptionType && schema.subscriptionType.name);
-
   let evaluatedTypes = '';
-  for (const type of schema.types) {
+  for (const type of introspection.__schema.types) {
     const typeStr = printIntrospectionType(type);
     if (evaluatedTypes) evaluatedTypes += '\n';
     evaluatedTypes += `    ${printName(type.name)}: ${typeStr};`;
   }
+  return `{\n${evaluatedTypes}\n}`;
+}
 
+export function preprocessIntrospection(
+  introspection: IntrospectionResult | IntrospectionQuery,
+  typesStr = preprocessIntrospectionTypes(introspection)
+): string {
+  const { __schema: schema } = introspection;
+  const name = 'name' in introspection ? introspection.name : undefined;
+  const queryName = printName(schema.queryType.name);
+  const mutationName = printName(schema.mutationType && schema.mutationType.name);
+  const subscriptionName = printName(schema.subscriptionType && schema.subscriptionType.name);
   return (
     '{\n' +
     `  name: ${printName(name)};\n` +
     `  query: ${queryName};\n` +
     `  mutation: ${mutationName};\n` +
     `  subscription: ${subscriptionName};\n` +
-    `  types: {\n${evaluatedTypes}\n  };\n}`
+    `  types: ${typesStr};\n}`
   );
 }