fix: prettify intersected types when selecting multiple columns (#399)

* Prettify intersected types when selecting multiple columns

Resolves #398

* update type test

---------

Co-authored-by: Bobbie Soedirgo <[email protected]>

Author: TomasHubelbauer

src/select-query-parser.ts

@@ -1,6 +1,6 @@
 // Credits to @bnjmnt4n (https://www.npmjs.com/package/postgrest-query)
 
-import { GenericSchema } from './types'
+import { GenericSchema, Prettify } from './types'
 
 type Whitespace = ' ' | '\n' | '\t'
 
@@ -342,7 +342,7 @@ type GetResultHelper<
   ? GetResultHelper<Schema, Row, [], ConstructFieldDefinition<Schema, Row, R> & Acc>
   : Fields extends [infer R, ...infer Rest]
   ? GetResultHelper<Schema, Row, Rest, ConstructFieldDefinition<Schema, Row, R> & Acc>
-  : Acc
+  : Prettify<Acc>
 
 /**
  * Constructs a type definition for an object based on a given PostgREST query.

src/types.ts

@@ -69,3 +69,6 @@ export type GenericSchema = {
   Views: Record<string, GenericView>
   Functions: Record<string, GenericFunction>
 }
+
+// https://twitter.com/mattpocockuk/status/1622730173446557697
+export type Prettify<T> = { [K in keyof T]: T[K] } & {}

test/index.test-d.ts

@@ -52,7 +52,7 @@ const postgrest = new PostgrestClient<Database>(REST_URL)
   if (error) {
     throw new Error(error.message)
   }
-  expectType<{ bar: Json } & { baz: string }>(data)
+  expectType<{ bar: Json, baz: string }>(data)
 }
 
 // rpc return type