feat(generate): add Dart client renderer

components/GeneratePanel.tsx

@@ -233,6 +233,32 @@ export function GeneratePanel({ idl, programId }: GeneratePanelProps) {
               </p>
             </>
           )}
+          {language === "dart" && (
+            <>
+              <Step
+                n={1}
+                text="Unzip the download. The output is a folder of Dart sources with a top-level barrel file that re-exports the instructions, PDAs, errors, and program constants."
+              />
+              <Step
+                n={2}
+                text="Copy the folder into your Dart or Flutter project's lib/, then add the solana_kit packages the generated code imports (solana_kit_addresses, solana_kit_instructions, solana_kit_codecs_*, and meta) to your pubspec.yaml and fetch them:"
+              >
+                <Code>{`dart pub get`}</Code>
+              </Step>
+              <Step
+                n={3}
+                text="Import the barrel file and use the exported instruction builders, account/PDA helpers, and program constants."
+              >
+                <Code>{`import 'generated/${programName}.dart';`}</Code>
+              </Step>
+              <p className="text-zinc-600 pt-1">
+                Generated as native <span className="text-zinc-500">Dart</span>{" "}
+                sources targeting the solana_kit SDK. No pubspec.yaml is emitted
+                — add the solana_kit dependencies to your project manifest
+                yourself.
+              </p>
+            </>
+          )}
         </div>
       </div>
     </div>

lib/codama-generate.ts

@@ -8,6 +8,15 @@ import JSZip from "jszip";
 import fs from "fs";
 import path from "path";
 import { randomUUID } from "crypto";
+import { createRequire } from "module";
+
+// codama-renderers-dart@0.4.x mispublishes its exports map: the `import` condition
+// points at a .mjs absent from the tarball. Load the working CJS build via require.
+// Anchor on cwd rather than import.meta.url so this also compiles under the CJS test build.
+const renderDart: typeof import("codama-renderers-dart").renderVisitor =
+  createRequire(path.join(process.cwd(), "package.json"))(
+    "codama-renderers-dart"
+  ).renderVisitor;
 import type { Language } from "./codama-types";
 import { assertLanguageSupportedForIdl } from "./codama-compat";
 import { getCodamaRootNode, getIdlProgramName } from "./idl-utils";
@@ -87,6 +96,17 @@ export async function generateFromIdl(
         );
         break;
       }
+      case "dart": {
+        const dartDir = path.join(tmpDir, `${programName}-dart-client`);
+        fs.mkdirSync(dartDir, { recursive: true });
+        codama.accept(
+          renderDart(dartDir, {
+            formatCode: false,
+            deleteFolderBeforeRendering: false,
+          })
+        );
+        break;
+      }
       default:
         throw new Error(`Unknown language: ${language}`);
     }

lib/codama-types.ts

@@ -1,4 +1,4 @@
-export type Language = "typescript" | "typescript-umi" | "rust" | "go";
+export type Language = "typescript" | "typescript-umi" | "rust" | "go" | "dart";
 
 export const LANGUAGES: { id: Language; label: string; description: string }[] =
   [
@@ -22,4 +22,9 @@ export const LANGUAGES: { id: Language; label: string; description: string }[] =
       label: "Go",
       description: "Native Go client",
     },
+    {
+      id: "dart",
+      label: "Dart",
+      description: "Native Dart client (solana_kit)",
+    },
   ];

next.config.ts

@@ -20,6 +20,7 @@ const nextConfig: NextConfig = {
     "@codama/renderers-js-umi",
     "@codama/renderers-rust",
     "@codama/renderers-go",
+    "codama-renderers-dart",
     "memfs",
   ],
 

package.json

@@ -21,6 +21,7 @@
     "@solana/kit": "^7.0.0",
     "@vercel/analytics": "^2.0.1",
     "codama": "^1.9.0",
+    "codama-renderers-dart": "^0.4.1",
     "jszip": "^3.10.1",
     "next": "^16.2.10",
     "pako": "^3.0.1",