fix(cli): forward nested graphql-config loader options (#10590)

* fix(cli): align graphql-config loader options with codegen config

Ensure nested `config` values (e.g. inputValueDeprecation) are forwarded when loading schema/documents via GraphQL Config.

Add a regression test covering nested config forwarding on the GraphQL Config path.

Related #9659

Co-Authored-By: Codex <codex@localhost>

* chore(changeset): add patch release for cli config forwarding fix

Co-Authored-By: Codex <codex@localhost>

* Fix changeset

---------

Co-authored-by: Codex <codex@localhost>
Co-authored-by: Eddy Nguyen <github@eddeee888.me>
Co-authored-by: Eddy Nguyen <ch@eddeee888.me>

Author: 3 people

.changeset/tame-panthers-rule.md

@@ -0,0 +1,6 @@
+---
+"@graphql-codegen/cli": patch
+---
+
+Fix GraphQL Config loading to forward nested `extensions.codegen.config` options
+when loading schemas/documents, matching `codegen.ts` behavior.

packages/graphql-codegen-cli/src/config.ts

@@ -444,7 +444,9 @@ export class CodegenContext {
     if (this._graphqlConfig) {
       // TODO: SchemaWithLoader won't work here
       return addHashToSchema(
-        this._graphqlConfig.getProject(this._project).loadSchema(pointer, 'GraphQLSchema', config)
+        this._graphqlConfig
+          .getProject(this._project)
+          .loadSchema(pointer, 'GraphQLSchema', { ...config, ...config.config })
       );
     }
     return addHashToSchema(loadSchema(pointer, config));
@@ -454,7 +456,9 @@ export class CodegenContext {
     const config = this.getConfig(defaultDocumentsLoadOptions);
     if (this._graphqlConfig) {
       // TODO: pointer won't work here
-      return addHashToDocumentFiles(this._graphqlConfig.getProject(this._project).loadDocuments(pointer, config));
+      return addHashToDocumentFiles(
+        this._graphqlConfig.getProject(this._project).loadDocuments(pointer, { ...config, ...config.config })
+      );
     }
 
     return addHashToDocumentFiles(loadDocuments(pointer, config));

packages/graphql-codegen-cli/tests/config.spec.ts

@@ -1,4 +1,5 @@
-import { createContext, ensureContext } from '../src/index.js';
+import { buildSchema } from 'graphql';
+import { createContext, ensureContext, CodegenContext } from '../src/index.js';
 
 describe('Codegen config - Context', () => {
   it('loads and merge multiple schemas when using GraphQL config', async () => {
@@ -86,4 +87,36 @@ describe('Codegen config - Context', () => {
     expect(typeMap['DateTime']).toBeDefined();
     expect(typeMap['User']).toBeDefined();
   });
+
+  it('passes nested config values to graphql-config schema loader', async () => {
+    const loadSchemaSpy = vi.fn().mockResolvedValue(buildSchema('type Query { _: Boolean }'));
+    const project = {
+      extension: vi.fn().mockReturnValue({
+        generates: {},
+        config: {
+          inputValueDeprecation: true,
+        },
+      }),
+      schema: ['http://example.com/graphql'],
+      documents: [],
+      loadSchema: loadSchemaSpy,
+      loadDocuments: vi.fn(),
+    };
+    const graphqlConfig = {
+      filepath: '/tmp/graphql.config.ts',
+      dirpath: '/tmp',
+      getProject: vi.fn().mockReturnValue(project),
+    } as any;
+
+    const context = new CodegenContext({ graphqlConfig });
+    await context.loadSchema(['http://example.com/graphql']);
+
+    expect(loadSchemaSpy).toHaveBeenCalledWith(
+      ['http://example.com/graphql'],
+      'GraphQLSchema',
+      expect.objectContaining({
+        inputValueDeprecation: true,
+      })
+    );
+  });
 });