feat(typegen): add CompositeTypes helper (#798)

* Add `CompositeTypes` helper

* fix: formatting & tests

* chore: update scripts

* chore: prettier

---------

Co-authored-by: Bobbie Soedirgo <bobbie@soedirgo.dev>

Author: f-elix

package.json

@@ -28,8 +28,8 @@
     "start": "node dist/server/server.js",
     "dev": "trap 'npm run db:clean' INT && run-s db:clean db:run && nodemon --exec node --loader ts-node/esm src/server/server.ts | pino-pretty --colorize",
     "test": "run-s db:clean db:run test:run db:clean",
-    "db:clean": "cd test/db && docker-compose down",
-    "db:run": "cd test/db && docker-compose up --detach && sleep 5",
+    "db:clean": "cd test/db && docker compose down",
+    "db:run": "cd test/db && docker compose up --detach && sleep 5",
     "test:run": "vitest run",
     "test:update": "run-s db:clean db:run && vitest run --update && run-s db:clean"
   },

src/server/constants.ts

@@ -37,7 +37,7 @@ if (PG_META_DB_SSL_ROOT_CERT) {
 export const EXPORT_DOCS = process.env.PG_META_EXPORT_DOCS === 'true'
 export const GENERATE_TYPES = process.env.PG_META_GENERATE_TYPES
 export const GENERATE_TYPES_INCLUDED_SCHEMAS = GENERATE_TYPES
-  ? process.env.PG_META_GENERATE_TYPES_INCLUDED_SCHEMAS?.split(',') ?? []
+  ? (process.env.PG_META_GENERATE_TYPES_INCLUDED_SCHEMAS?.split(',') ?? [])
   : []
 export const GENERATE_TYPES_DETECT_ONE_TO_ONE_RELATIONSHIPS =
   process.env.PG_META_GENERATE_TYPES_DETECT_ONE_TO_ONE_RELATIONSHIPS === 'true'

src/server/templates/typescript.ts

@@ -464,6 +464,19 @@ export type Enums<
   : PublicEnumNameOrOptions extends keyof PublicSchema["Enums"]
   ? PublicSchema["Enums"][PublicEnumNameOrOptions]
   : never
+
+export type CompositeTypes<
+  PublicCompositeTypeNameOrOptions extends
+    | keyof PublicSchema['CompositeTypes']
+    | { schema: keyof Database },
+  CompositeTypeName extends PublicCompositeTypeNameOrOptions extends { schema: keyof Database }
+    ? keyof Database[PublicCompositeTypeNameOrOptions['schema']]['CompositeTypes']
+    : never = never
+> = PublicCompositeTypeNameOrOptions extends { schema: keyof Database }
+  ? Database[PublicCompositeTypeNameOrOptions['schema']]['CompositeTypes'][CompositeTypeName]
+  : PublicCompositeTypeNameOrOptions extends keyof PublicSchema['CompositeTypes']
+    ? PublicSchema['CompositeTypes'][PublicCompositeTypeNameOrOptions]
+    : never;
 `
 
   output = await prettier.format(output, {

test/server/typegen.ts

@@ -509,6 +509,21 @@ test('typegen: typescript', async () => {
       : PublicEnumNameOrOptions extends keyof PublicSchema["Enums"]
         ? PublicSchema["Enums"][PublicEnumNameOrOptions]
         : never
+
+    export type CompositeTypes<
+      PublicCompositeTypeNameOrOptions extends
+        | keyof PublicSchema["CompositeTypes"]
+        | { schema: keyof Database },
+      CompositeTypeName extends PublicCompositeTypeNameOrOptions extends {
+        schema: keyof Database
+      }
+        ? keyof Database[PublicCompositeTypeNameOrOptions["schema"]]["CompositeTypes"]
+        : never = never,
+    > = PublicCompositeTypeNameOrOptions extends { schema: keyof Database }
+      ? Database[PublicCompositeTypeNameOrOptions["schema"]]["CompositeTypes"][CompositeTypeName]
+      : PublicCompositeTypeNameOrOptions extends keyof PublicSchema["CompositeTypes"]
+        ? PublicSchema["CompositeTypes"][PublicCompositeTypeNameOrOptions]
+        : never
     "
   `)
 })
@@ -1038,6 +1053,21 @@ test('typegen w/ one-to-one relationships', async () => {
       : PublicEnumNameOrOptions extends keyof PublicSchema["Enums"]
         ? PublicSchema["Enums"][PublicEnumNameOrOptions]
         : never
+
+    export type CompositeTypes<
+      PublicCompositeTypeNameOrOptions extends
+        | keyof PublicSchema["CompositeTypes"]
+        | { schema: keyof Database },
+      CompositeTypeName extends PublicCompositeTypeNameOrOptions extends {
+        schema: keyof Database
+      }
+        ? keyof Database[PublicCompositeTypeNameOrOptions["schema"]]["CompositeTypes"]
+        : never = never,
+    > = PublicCompositeTypeNameOrOptions extends { schema: keyof Database }
+      ? Database[PublicCompositeTypeNameOrOptions["schema"]]["CompositeTypes"][CompositeTypeName]
+      : PublicCompositeTypeNameOrOptions extends keyof PublicSchema["CompositeTypes"]
+        ? PublicSchema["CompositeTypes"][PublicCompositeTypeNameOrOptions]
+        : never
     "
   `)
 })
@@ -1567,6 +1597,21 @@ test('typegen: typescript w/ one-to-one relationships', async () => {
       : PublicEnumNameOrOptions extends keyof PublicSchema["Enums"]
         ? PublicSchema["Enums"][PublicEnumNameOrOptions]
         : never
+
+    export type CompositeTypes<
+      PublicCompositeTypeNameOrOptions extends
+        | keyof PublicSchema["CompositeTypes"]
+        | { schema: keyof Database },
+      CompositeTypeName extends PublicCompositeTypeNameOrOptions extends {
+        schema: keyof Database
+      }
+        ? keyof Database[PublicCompositeTypeNameOrOptions["schema"]]["CompositeTypes"]
+        : never = never,
+    > = PublicCompositeTypeNameOrOptions extends { schema: keyof Database }
+      ? Database[PublicCompositeTypeNameOrOptions["schema"]]["CompositeTypes"][CompositeTypeName]
+      : PublicCompositeTypeNameOrOptions extends keyof PublicSchema["CompositeTypes"]
+        ? PublicSchema["CompositeTypes"][PublicCompositeTypeNameOrOptions]
+        : never
     "
   `)
 })