[Tool][Codegen] Add script to post format the generated graphql file

Makes it possible to modify the generated graphql file by codegen.

package.json

@@ -12,7 +12,9 @@
     "lint": "eslint src --ext .ts,.tsx,.js,.jsx",
     "createChangelog": "ts-node tools/scripts/createReleaseChanglog.ts",
     "updateDeps": "yarn outdated && yarn upgrade && yarn syncyarnlock -s -k && yarn && git add package.json yarn.lock && git commit -m \"Update dependencies\"",
-    "gql:codegen": "graphql-codegen --config gql_codegen.ts"
+    "gql:codegen-base": "graphql-codegen --config gql_codegen.ts",
+    "gql:codegen-formatter": "ts-node tools/scripts/codegenFormatter.ts",
+    "gql:codegen": "yarn gql:codegen-base & yarn gql:codegen-formatter"
   },
   "browserslist": {
     "production": [

tools/scripts/codegenFormatter.ts

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+import fs from 'fs';
+import * as path from 'path';
+
+const format = (source: string, regex: RegExp, replaceValue: string): string => source.replace(regex, replaceValue);
+
+const generatedGraphQLFilePath = path.resolve(__dirname, '../../src/lib/graphql/generated/graphql.ts');
+const generatedGraphQLFile = fs.readFileSync(generatedGraphQLFilePath, 'utf8');
+
+// add logic to format the codegen generated graphql file
+
+const fixCursorTyping = format(
+    generatedGraphQLFile,
+    /Cursor: \{ input: any; output: any; }/g,
+    'Cursor: { input: string; output: string; }',
+);
+
+const fixLongStringTyping = format(
+    fixCursorTyping,
+    /LongString: \{ input: any; output: any; }/g,
+    'LongString: { input: string; output: string; }',
+);
+
+const fixSubscriptionHookNameSuffix = format(fixLongStringTyping, /SubscriptionSubscription/g, 'Subscription');
+
+fs.writeFileSync(generatedGraphQLFilePath, fixSubscriptionHookNameSuffix);