feat(schema-ast): support gql extension name for schema-ast output (#8712)

* feat(schema-ast): support gql extension name for schema-ast output

resolve #8711

* chore: add changeset for schema-ast gql extension support

* chore: mark schema-ast release as a minor version change

Author: danielwaltz

.changeset/strange-moose-clean.md

@@ -0,0 +1,5 @@
+---
+'@graphql-codegen/schema-ast': minor
+---
+
+support gql file extension for schema-ast output

packages/plugins/other/schema-ast/src/index.ts

@@ -130,8 +130,12 @@ export const validate: PluginValidateFn<any> = async (
 ) => {
   const singlePlugin = allPlugins.length === 1;
 
-  if (singlePlugin && extname(outputFile) !== '.graphql') {
-    throw new Error(`Plugin "schema-ast" requires extension to be ".graphql"!`);
+  const allowedExtensions = ['.graphql', '.gql'];
+  const isAllowedExtension = allowedExtensions.includes(extname(outputFile));
+
+  if (singlePlugin && !isAllowedExtension) {
+    const allowedExtensionsOutput = allowedExtensions.map(extension => `"${extension}"`).join(' or ');
+    throw new Error(`Plugin "schema-ast" requires extension to be ${allowedExtensionsOutput}!`);
   }
 };
 

packages/plugins/other/schema-ast/tests/schema-ast.spec.ts

@@ -23,7 +23,7 @@ describe('Schema AST', () => {
         throw new Error(SHOULD_THROW_ERROR);
       } catch (e) {
         expect(e.message).not.toBe(SHOULD_THROW_ERROR);
-        expect(e.message).toBe('Plugin "schema-ast" requires extension to be ".graphql"!');
+        expect(e.message).toBe('Plugin "schema-ast" requires extension to be ".graphql" or ".gql"!');
       }
     });
 
@@ -45,7 +45,7 @@ describe('Schema AST', () => {
       }
     });
 
-    it('Should allow graphql extension when its the only plugin', async () => {
+    it('Should allow .graphql extension when its the only plugin', async () => {
       const fileName = 'output.graphql';
       const plugins: Types.ConfiguredPlugin[] = [
         {
@@ -59,6 +59,21 @@ describe('Schema AST', () => {
         expect(true).toBeFalsy();
       }
     });
+
+    it('Should allow .gql extension when its the only plugin', async () => {
+      const fileName = 'output.gql';
+      const plugins: Types.ConfiguredPlugin[] = [
+        {
+          'schema-ast': {},
+        },
+      ];
+
+      try {
+        await validate(null, null, null, fileName, plugins);
+      } catch (e) {
+        expect(true).toBeFalsy();
+      }
+    });
   });
   describe('Output', () => {
     const typeDefs = /* GraphQL */ `