refactor: sql-tools (#19717)

server/src/sql-tools/transformers/extension.transformer.ts

@@ -0,0 +1,26 @@
+import { SqlTransformer } from 'src/sql-tools/transformers/types';
+import { DatabaseExtension, SchemaDiff } from 'src/sql-tools/types';
+
+export const transformExtensions: SqlTransformer = (item: SchemaDiff) => {
+  switch (item.type) {
+    case 'ExtensionCreate': {
+      return asExtensionCreate(item.extension);
+    }
+
+    case 'ExtensionDrop': {
+      return asExtensionDrop(item.extensionName);
+    }
+
+    default: {
+      return false;
+    }
+  }
+};
+
+const asExtensionCreate = (extension: DatabaseExtension): string => {
+  return `CREATE EXTENSION IF NOT EXISTS "${extension.name}";`;
+};
+
+const asExtensionDrop = (extensionName: string): string => {
+  return `DROP EXTENSION "${extensionName}";`;
+};