chore: migrate to typescript

web3.js/src/nonce-account.ts

@@ -0,0 +1,64 @@
+import * as BufferLayout from 'buffer-layout';
+
+import type {Blockhash} from './blockhash';
+import * as Layout from './layout';
+import {PublicKey} from './publickey';
+import type {FeeCalculator} from './fee-calculator';
+import {FeeCalculatorLayout} from './fee-calculator';
+import {toBuffer} from './util/to-buffer';
+
+/**
+ * See https://github.com/solana-labs/solana/blob/0ea2843ec9cdc517572b8e62c959f41b55cf4453/sdk/src/nonce_state.rs#L29-L32
+ *
+ * @internal
+ */
+const NonceAccountLayout = BufferLayout.struct([
+  BufferLayout.u32('version'),
+  BufferLayout.u32('state'),
+  Layout.publicKey('authorizedPubkey'),
+  Layout.publicKey('nonce'),
+  BufferLayout.struct([FeeCalculatorLayout], 'feeCalculator'),
+]);
+
+export const NONCE_ACCOUNT_LENGTH = NonceAccountLayout.span;
+
+type NonceAccountArgs = {
+  authorizedPubkey: PublicKey;
+  nonce: Blockhash;
+  feeCalculator: FeeCalculator;
+};
+
+/**
+ * NonceAccount class
+ */
+export class NonceAccount {
+  authorizedPubkey: PublicKey;
+  nonce: Blockhash;
+  feeCalculator: FeeCalculator;
+
+  /**
+   * @internal
+   */
+  constructor(args: NonceAccountArgs) {
+    this.authorizedPubkey = args.authorizedPubkey;
+    this.nonce = args.nonce;
+    this.feeCalculator = args.feeCalculator;
+  }
+
+  /**
+   * Deserialize NonceAccount from the account data.
+   *
+   * @param buffer account data
+   * @return NonceAccount
+   */
+  static fromAccountData(
+    buffer: Buffer | Uint8Array | Array<number>,
+  ): NonceAccount {
+    const nonceAccount = NonceAccountLayout.decode(toBuffer(buffer), 0);
+    return new NonceAccount({
+      authorizedPubkey: new PublicKey(nonceAccount.authorizedPubkey),
+      nonce: new PublicKey(nonceAccount.nonce).toString(),
+      feeCalculator: nonceAccount.feeCalculator,
+    });
+  }
+}