copy code from solana-program-library, and modify it so it works outs…

…ide the module

Signed-off-by: Sven Dowideit <[email protected]>

src/renderer/wallet-adapter/web3.ts

@@ -0,0 +1,63 @@
+import * as sol from '@solana/web3.js';
+import * as splToken from '@solana/spl-token';
+import {
+  MINT_SIZE,
+  getMinimumBalanceForRentExemptMint,
+  createInitializeMintInstruction,
+} from '@solana/spl-token';
+
+/**
+ * Create and initialize a new mint
+ *
+ * @param connection      Connection to use
+ * @param payer           Payer of the transaction and initialization fees
+ * @param mintAuthority   Account or multisig that will control minting
+ * @param freezeAuthority Optional account or multisig that can freeze token accounts
+ * @param decimals        Location of the decimal place
+ * @param keypair         Optional keypair, defaulting to a new random one
+ * @param confirmOptions  Options for confirming the transaction
+ * @param programId       SPL Token program account
+ *
+ * @return Address of the new mint
+ */
+// https://github.com/solana-labs/solana-program-library/blob/f487f520bf10ca29bf8d491192b6ff2b4bf89710/token/js/src/actions/createMint.ts
+export async function createMint(
+  connection: sol.Connection,
+  payer: sol.Signer,
+  mintAuthority: sol.PublicKey,
+  freezeAuthority: sol.PublicKey | null,
+  decimals: number,
+  keypair = sol.Keypair.generate(),
+  confirmOptions?: sol.ConfirmOptions,
+  programId = splToken.TOKEN_PROGRAM_ID
+): Promise<sol.PublicKey> {
+  const lamports = await getMinimumBalanceForRentExemptMint(connection);
+
+  const transaction = new sol.Transaction().add(
+    sol.SystemProgram.createAccount({
+      fromPubkey: payer.publicKey,
+      newAccountPubkey: keypair.publicKey,
+      space: MINT_SIZE,
+      lamports,
+      programId,
+    }),
+    createInitializeMintInstruction(
+      keypair.publicKey,
+      decimals,
+      mintAuthority,
+      freezeAuthority,
+      programId
+    )
+  );
+
+  await sol.sendAndConfirmTransaction(
+    connection,
+    transaction,
+    [payer, keypair],
+    confirmOptions
+  );
+
+  return keypair.publicKey;
+}
+
+export default {};