fix(typegen): Map postgres numeric type to Swift Decimal type (#960)

Author: im-jersh

src/server/templates/swift.ts

@@ -309,6 +309,8 @@ const pgTypeToSwiftType = (
     swiftType = 'Float'
   } else if (pgType === 'float8') {
     swiftType = 'Double'
+  } else if (['numeric', 'decimal'].includes(pgType)) {
+    swiftType = 'Decimal'
   } else if (pgType === 'uuid') {
     swiftType = 'UUID'
   } else if (

test/db/00-init.sql

@@ -8,7 +8,8 @@ CREATE TYPE composite_type_with_array_attribute AS (my_text_array text[]);
 CREATE TABLE public.users (
   id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
   name text,
-  status user_status DEFAULT 'ACTIVE'
+  status user_status DEFAULT 'ACTIVE',
+  decimal numeric
 );
 INSERT INTO 
     public.users (name) 

test/lib/tables.ts

@@ -78,6 +78,24 @@ test('list', async () => {
           "schema": "public",
           "table": "users",
         },
+        {
+          "check": null,
+          "comment": null,
+          "data_type": "numeric",
+          "default_value": null,
+          "enums": [],
+          "format": "numeric",
+          "identity_generation": null,
+          "is_generated": false,
+          "is_identity": false,
+          "is_nullable": true,
+          "is_unique": false,
+          "is_updatable": true,
+          "name": "decimal",
+          "ordinal_position": 4,
+          "schema": "public",
+          "table": "users",
+        },
         {
           "check": null,
           "comment": null,

test/server/query.ts

@@ -10,11 +10,13 @@ test('query', async () => {
   expect(res.json()).toMatchInlineSnapshot(`
     [
       {
+        "decimal": null,
         "id": 1,
         "name": "Joe Bloggs",
         "status": "ACTIVE",
       },
       {
+        "decimal": null,
         "id": 2,
         "name": "Jane Doe",
         "status": "ACTIVE",