Add const to Values type parameter on g.enum (#59)

Author: emmatown

.changeset/loud-fishes-unite.md

@@ -0,0 +1,5 @@
+---
+"@graphql-ts/schema": patch
+---
+
+Add `const` to `Values` type parameter on `g.enum` to improve inference

.gitignore

@@ -103,4 +103,4 @@ dist
 # TernJS port file
 .tern-port
 
-.vitepress/cache
+site/.vitepress/cache

packages/schema/src/output.ts

@@ -603,7 +603,7 @@ export type GWithContext<Context> = {
    * `;)
    * ```
    */
-  enum: <Values extends Record<string, unknown>>(
+  enum: <const Values extends Record<string, unknown>>(
     config: GEnumTypeConfig<Values>
   ) => GEnumType<Values>;
   /**

test-project/index.test-d.ts

@@ -2162,3 +2162,21 @@ const someInputFields = {
     },
   });
 }
+
+{
+  const x = g.enum({
+    name: "X",
+    values: {
+      a: {
+        value: "a",
+      },
+      b: {
+        value: "b",
+      },
+    },
+  });
+  assertCompatible<
+    Invariant<GEnumType<{ a: "a"; b: "b" }>>,
+    Invariant<typeof x>
+  >();
+}