Add script to update the formatError implementation (#38)

src/v8/update-graphql-format-error.ts

@@ -0,0 +1,37 @@
+import { Project, SyntaxKind } from "ts-morph";
+
+/**
+ * From
+ *
+ * if (error instanceof ValidationError) {
+ *     return new ValidationError("Invalid request.");
+ * }
+ *
+ * to
+ *
+ * if (error.extensions?.code === "GRAPHQL_VALIDATION_FAILED") {
+ *      return new ValidationError("Invalid request.");
+ * }
+ */
+export default async function updateGraphQLFormatError() {
+    const project = new Project({ tsConfigFilePath: "./api/tsconfig.json" });
+
+    const sourceFile = project.getSourceFile("api/src/app.module.ts");
+
+    if (!sourceFile) {
+        throw new Error("app.module.ts not found");
+    }
+
+    // Change the import
+    sourceFile.getImportDeclaration((importDeclaration) => importDeclaration.getModuleSpecifierValue() === "apollo-server-express")?.remove();
+    sourceFile.addImportDeclaration({ namedImports: ["ValidationError"], moduleSpecifier: "@nestjs/apollo" });
+
+    // Update the if statement
+    sourceFile.getDescendantsOfKind(SyntaxKind.BinaryExpression).forEach((node) => {
+        if (node.getText() === "error instanceof ValidationError") {
+            node.replaceWithText(`error.extensions?.code === "GRAPHQL_VALIDATION_FAILED"`);
+        }
+    });
+
+    await sourceFile.save();
+}