solution: unify create tx ui

.eslintrc.js

@@ -59,7 +59,7 @@ module.exports = {
       },
     ],
     'unused-imports/no-unused-imports': 'warn',
-    'unused-imports/no-unused-vars': 'warn',
+    'unused-imports/no-unused-vars': ['warn', { args: 'after-used' }],
   },
   settings: {
     'import/parsers': {

.vscode/emerald-wallet.code-workspace

@@ -68,7 +68,9 @@
     "search.exclude": {
       "**/.emerald-dev": true,
       "**/.tests": true,
+      "**/.yarn": true,
       "**/app": true,
+      "**/coverage": true,
       "**/lib": true,
       "**/node_modules": true,
       "**/target": true,

.vscode/tasks.json

@@ -3,10 +3,25 @@
   "tasks": [
     {
       "type": "npm",
-      "group": "build",
+      "group": {
+        "isDefault": true,
+        "kind": "build"
+      },
       "label": "build:dev",
       "script": "build:dev"
     },
+    {
+      "type": "npm",
+      "group": "build",
+      "label": "build:native",
+      "script": "build:native"
+    },
+    {
+      "type": "npm",
+      "group": "build",
+      "label": "clean",
+      "script": "clean"
+    },
     {
       "type": "npm",
       "group": "test",

packages/core/package.json

@@ -21,6 +21,7 @@
     "@ethersproject/abi": "^5.7.0",
     "@ethersproject/bignumber": "^5.7.0",
     "bignumber.js": "8.0.2",
+    "bitcoinjs-lib": "^6.1.0",
     "ethereumjs-util": "^7.1.5",
     "jsonschema": "^1.4.1"
   },

packages/core/src/blockchains/blockchains.ts

@@ -1,5 +1,5 @@
 import { BigAmount, CreateAmount, Unit, Units } from '@emeraldpay/bigamount';
-import { Satoshi, Wei, WeiAny, WeiEtc } from '@emeraldpay/bigamount-crypto';
+import { Satoshi, SatoshiAny, Wei, WeiAny, WeiEtc } from '@emeraldpay/bigamount-crypto';
 import { LedgerApp } from '@emeraldpay/emerald-vault-core';
 import { Bitcoin } from './Bitcoin';
 import { Coin } from './coin';
@@ -165,7 +165,13 @@ export const WEIS_GOERLI = new Units([
   new Unit(18, 'Goerli Ether', 'ETG'),
 ]);
 
-export const SATOSHIS_TEST = new Units([new Unit(0, 'Test Satoshi', 'tsat'), new Unit(8, 'Test Bitcoin', 'TESTBTC')]);
+export const SATOSHIS_TEST = new Units([
+  new Unit(0, 'Test Satoshi', 'tsat'),
+  new Unit(1, 'Test Finney', 'tfin'),
+  new Unit(2, 'Test bit', 'tμBTC'),
+  new Unit(5, 'Test millibit', 'tmBTC'),
+  new Unit(8, 'Test Bitcoin', 'TestBTC'),
+]);
 
 export function amountFactory(code: BlockchainCode): CreateAmount<BigAmount> {
   switch (code) {
@@ -178,7 +184,7 @@ export function amountFactory(code: BlockchainCode): CreateAmount<BigAmount> {
     case BlockchainCode.Goerli:
       return (value) => new WeiAny(value, WEIS_GOERLI);
     case BlockchainCode.TestBTC:
-      return (value) => new BigAmount(value, SATOSHIS_TEST);
+      return (value) => new SatoshiAny(value, SATOSHIS_TEST);
     default:
       throw new Error(`Unsupported blockchain: ${code}`);
   }

packages/core/src/workflow/create-tx/CreateBitcoinCancelTx.ts → packages/core/src/workflow/CreateBitcoinCancelTx.ts

@@ -13,7 +13,7 @@ export class CreateBitcoinCancelTx extends CreateBitcoinTx {
 
     return [
       {
-        address: this.changeAddress,
+        address: this.changeAddress ?? '',
         amount: totalChange.number.toNumber(),
         entryId: this.entryId,
       },
@@ -33,6 +33,10 @@ export class CreateBitcoinCancelTx extends CreateBitcoinTx {
       return ValidationResult.INSUFFICIENT_FEE_PRICE;
     }
 
+    if (this.changeAddress == null) {
+      return ValidationResult.NO_CHANGE_ADDRESS;
+    }
+
     if (this.tx.from.length === 0) {
       return ValidationResult.NO_FROM;
     }