added sign inputs without finalize method

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bellhdw",
-  "version": "0.5.19",
+  "version": "0.5.20",
   "description": "Client-side Bitcoin JavaScript library",
   "main": "./src/index.js",
   "types": "./src/index.d.ts",

ts_src/hd/private.ts

@@ -146,6 +146,26 @@ class HDPrivateKey extends BaseWallet implements Keyring<SerializedHDKey> {
     };
   }
 
+  signInputsWithoutFinalizing(
+    psbt: Psbt,
+    inputs: ToSignInput[]
+  ): {
+    inputIndex: number;
+    partialSig: { pubkey: Buffer; signature: Buffer }[];
+  }[] {
+    let account: ECPairInterface | undefined;
+
+    inputs.map((i) => {
+      account = this.findAccountByPk(i.publicKey);
+      psbt.signInput(i.index, account, i.sighashTypes);
+    });
+
+    return psbt.data.inputs.map((f, i) => ({
+      inputIndex: i,
+      partialSig: f.partialSig?.flatMap((p) => p) ?? [],
+    }));
+  }
+
   signMessage(address: Hex, text: string) {
     const account = this.findAccount(address);
     const hash = sha256(text);

ts_src/hd/simple.ts

@@ -111,6 +111,7 @@ class HDSimpleKey extends BaseWallet implements Keyring<SerializedSimpleKey> {
   }
 
   signAllInputsInPsbt(psbt: Psbt, accountAddress: string) {
+    this.initPair();
     if (this.pair === undefined)
       throw new Error("Cannot sign all inputs since pair is undefined");
     if (accountAddress !== this.getAddress(this.publicKey))
@@ -131,6 +132,25 @@ class HDSimpleKey extends BaseWallet implements Keyring<SerializedSimpleKey> {
     };
   }
 
+  signInputsWithoutFinalizing(
+    psbt: Psbt,
+    inputs: ToSignInput[]
+  ): {
+    inputIndex: number;
+    partialSig: { pubkey: Buffer; signature: Buffer }[];
+  }[] {
+    this.initPair();
+    if (this.pair === undefined)
+      throw new Error("Cannot sign inputs since pair is undefined");
+    for (let i of inputs) {
+      psbt.signInput(i.index, this.pair!, i.sighashTypes);
+    }
+    return psbt.data.inputs.map((f, i) => ({
+      inputIndex: i,
+      partialSig: f.partialSig?.flatMap((p) => p) ?? [],
+    }));
+  }
+
   signMessage(_address: string, message: string) {
     this.initPair();
 

ts_src/hd/types.ts

@@ -65,6 +65,13 @@ export type Keyring<State> = {
     psbt: Psbt,
     accountAddress: string
   ): { signatures: (string | undefined)[] };
+  signInputsWithoutFinalizing(
+    psbt: Psbt,
+    inputs: ToSignInput[]
+  ): {
+    inputIndex: number;
+    partialSig: { pubkey: Buffer; signature: Buffer }[];
+  }[];
 };
 
 export const DISALLOWED_CHILD_METHODS: (keyof Keyring<any>)[] = [