WIP (BlockchainLocal working)

Signed-off-by: James Zuccon <zuccon@gmail.com>

packages/primitives/src/hd-private-node.ts

@@ -7,6 +7,7 @@ import {
   deriveHdPath,
   deriveHdPublicNode,
   deriveHdPrivateNodeFromSeed,
+  deriveSeedFromBip39Mnemonic,
   generateRandomBytes,
 } from '@bitauth/libauth';
 
@@ -26,38 +27,16 @@ export class HDPrivateNode {
   /**
    * Construct a new HD Private Node.
    *
-   * @param node {HdPrivateNodeValid} The HD Private Node.
+   * @param node The HD Private Node.
    */
   constructor(node: HdPrivateNodeValid) {
     this.node = node;
   }
 
-  /**
-   * Creates a HD Private Node from the given XPriv Key.
-   *
-   * @param xpriv {string} The XPriv Key.
-   *
-   * @throws {Error} If HD Private Node cannot be created.
-   *
-   * @returns {HDPrivateNode} The created HD Private Node.
-   */
-  public static fromXPriv(xpriv: string): HDPrivateNode {
-    // Attempt to decode the XPriv Key.
-    const decodeResult = decodeHdPrivateKey(xpriv);
-
-    // If a string is returned, this indicates an error...
-    if (typeof decodeResult === 'string') {
-      throw new Error(decodeResult);
-    }
-
-    // Return a new HD Private Node from the given XPriv.
-    return new HDPrivateNode(decodeResult.node);
-  }
-
   /**
    * Creates a HD Private Node from a raw seed.
    *
-   * @param seed {Uint8Array} The raw seed bytes.
+   * @param seed The raw seed bytes.
    *
    * @throws {Error} If HD Private Node cannot be created.
    *
@@ -83,6 +62,45 @@ export class HDPrivateNode {
     return new HDPrivateNode(deriveResult);
   }
 
+  /**
+   * Creates a HD Private Node from the given mnemonic.
+   *
+   * @param mnemonic The mnemonic.
+   *
+   * @throws {Error} If HD Private Node cannot be created.
+   *
+   * @returns {HDPrivateNode} The created HD Private Node.
+   */
+  public static fromMnemonic(mnemonic: string): HDPrivateNode {
+    // Derive the seed from the mnemonic.
+    const seed = deriveSeedFromBip39Mnemonic(mnemonic);
+
+    // Return a new HDPrivateNode from the given seed.
+    return HDPrivateNode.fromSeed(seed);
+  }
+
+  /**
+   * Creates a HD Private Node from the given XPriv Key.
+   *
+   * @param xpriv The XPriv Key.
+   *
+   * @throws {Error} If HD Private Node cannot be created.
+   *
+   * @returns {HDPrivateNode} The created HD Private Node.
+   */
+  public static fromXPriv(xpriv: string): HDPrivateNode {
+    // Attempt to decode the XPriv Key.
+    const decodeResult = decodeHdPrivateKey(xpriv);
+
+    // If a string is returned, this indicates an error...
+    if (typeof decodeResult === 'string') {
+      throw new Error(decodeResult);
+    }
+
+    // Return a new HD Private Node from the given XPriv.
+    return new HDPrivateNode(decodeResult.node);
+  }
+
   /**
    * Generates a random HD Private Node.
    *