chore: migrate to typescript

web3.js/src/account.ts

@@ -0,0 +1,43 @@
+import * as nacl from 'tweetnacl';
+import type {SignKeyPair as KeyPair} from 'tweetnacl';
+
+import {toBuffer} from './util/to-buffer';
+import {PublicKey} from './publickey';
+
+/**
+ * An account key pair (public and secret keys).
+ */
+export class Account {
+  /** @internal */
+  _keypair: KeyPair;
+
+  /**
+   * Create a new Account object
+   *
+   * If the secretKey parameter is not provided a new key pair is randomly
+   * created for the account
+   *
+   * @param secretKey Secret key for the account
+   */
+  constructor(secretKey?: Buffer | Uint8Array | Array<number>) {
+    if (secretKey) {
+      this._keypair = nacl.sign.keyPair.fromSecretKey(toBuffer(secretKey));
+    } else {
+      this._keypair = nacl.sign.keyPair();
+    }
+  }
+
+  /**
+   * The public key for this account
+   */
+  get publicKey(): PublicKey {
+    return new PublicKey(this._keypair.publicKey);
+  }
+
+  /**
+   * The **unencrypted** secret key for this account
+   */
+  get secretKey(): Buffer {
+    return toBuffer(this._keypair.secretKey);
+  }
+}