fix: catchup to upstream loader changes

module.flow.js

@@ -69,6 +69,7 @@ declare module '@solana/web3.js' {
     ): Transaction;
     static move(from: PublicKey, to: PublicKey, amount: number): Transaction;
     static assign(from: PublicKey, programId: PublicKey): Transaction;
+    static spawn(programId: PublicKey): Transaction;
   }
 
   // === src/transaction.js ===

src/loader.js

@@ -2,7 +2,7 @@
 
 import * as BufferLayout from 'buffer-layout';
 
-import {PublicKey, Transaction} from '.';
+import {PublicKey, SystemProgram, Transaction} from '.';
 import {sendAndConfirmTransaction} from './util/send-and-confirm-transaction';
 import type {Account, Connection} from '.';
 
@@ -85,12 +85,15 @@ export class Loader {
       userdata,
     );
 
-    const transaction = new Transaction({
+    let transaction = new Transaction({
       fee: 0,
       keys: [program.publicKey],
       programId: this.programId,
       userdata,
     });
     await sendAndConfirmTransaction(this.connection, program, transaction);
+
+    transaction = SystemProgram.spawn(program.publicKey);
+    await sendAndConfirmTransaction(this.connection, program, transaction);
   }
 }

src/system-program.js

@@ -105,4 +105,28 @@ export class SystemProgram {
       userdata,
     });
   }
+
+  /**
+   * Spawn a new program from an account
+   */
+  static spawn(programId: PublicKey): Transaction {
+    const userdataLayout = BufferLayout.struct([
+      BufferLayout.u32('instruction'),
+    ]);
+
+    const userdata = Buffer.alloc(userdataLayout.span);
+    userdataLayout.encode(
+      {
+        instruction: 3, // Spawn instruction
+      },
+      userdata,
+    );
+
+    return new Transaction({
+      fee: 0,
+      keys: [programId],
+      programId: SystemProgram.programId,
+      userdata,
+    });
+  }
 }

test/native-loader.test.js

@@ -9,7 +9,7 @@ import {mockRpcEnabled} from './__mocks__/node-fetch';
 import {url} from './url';
 import {newAccountWithTokens} from './new-account-with-tokens';
 
-test('unstable - load', async () => {
+test('load noop program', async () => {
   if (mockRpcEnabled) {
     console.log('non-live test skipped');
     return;
@@ -25,6 +25,6 @@ test('unstable - load', async () => {
     programId: noopProgramId,
   });
   const signature = await connection.sendTransaction(from, noopTransaction);
-  expect(connection.confirmTransaction(signature)).resolves.toBe(true);
+  await expect(connection.confirmTransaction(signature)).resolves.toBe(true);
 });