add extra flag on note merkle tree

Author: zemse

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ultralane/sdk",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "license": "MIT",
   "author": "Soham Zemse",
   "publishConfig": {"access": "public"},

src/note-merkle-tree.ts

@@ -23,15 +23,18 @@ export class NoteMerkleTree extends MerkleTree {
   constructor(
     public depth: number,
     public numInputs: number = 2,
-    public numOutputs: number = 1
+    public numOutputs: number = 1,
+    insertNoteZero: boolean = true
   ) {
     super(depth);
-    this.insert(
-      // Note.zero().commitment()
-      Field.from(
-        6693032976676388986107828574443457670072006098614160789085314534828627402874n
-      )
-    );
+    if (insertNoteZero) {
+      this.insert(
+        // Note.zero().commitment()
+        Field.from(
+          6693032976676388986107828574443457670072006098614160789085314534828627402874n
+        )
+      );
+    }
     if (this.numOutputs !== 1) {
       throw new Error('exactly 1 outputs are currently supported');
     }
@@ -52,6 +55,19 @@ export class NoteMerkleTree extends MerkleTree {
     return tree;
   }
 
+  static fromAllNoteCommitments(
+    commitments: bigint[],
+    depth: number,
+    numInputs: number = 2,
+    numOutputs: number = 1
+  ) {
+    let tree = new NoteMerkleTree(depth, numInputs, numOutputs, false);
+    for (let commitment of commitments) {
+      tree.insert(Field.from(commitment));
+    }
+    return tree;
+  }
+
   /**
    * Spend input notes and create new notes if necessary
    * Two source notes and one output note is currently supported