feat(utxo-coredao): initialize utxo-coredao

This is dependent on wasm-miniscript with OP_DROP, which is not
merged in yet. I will add tests for this once we can import it.

TICKET: BTC-1578

modules/utxo-coredao/.eslintignore

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+node_modules
+.idea
+public
+dist
+

modules/utxo-coredao/.mocharc.yml

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+require: 'ts-node/register'
+timeout: '60000'
+reporter: 'min'
+reporter-option:
+  - 'cdn=true'
+  - 'json=false'
+exit: true
+spec: ['test/unit/**/*.ts']

modules/utxo-coredao/.npmignore

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+!dist/
+dist/test/
+dist/tsconfig.tsbuildinfo
+.idea/
+.prettierrc.yml
+tsconfig.json
+src/
+test/
+scripts/
+.nyc_output
+CODEOWNERS
+node_modules/
+.prettierignore
+.mocharc.js

modules/utxo-coredao/.prettierignore

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+.nyc_output/
+dist/

modules/utxo-coredao/.prettierrc.yml

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+printWidth: 120
+singleQuote: true
+trailingComma: 'es5'

modules/utxo-coredao/README.md

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+# BitGo utxo-CoreDao
+
+Provides the functionality to build and parse coredao transactions.
+

modules/utxo-coredao/package.json

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+{
+  "name": "@bitgo/utxo-coredao",
+  "version": "1.0.0",
+  "description": "BitGo SDK for building CoreDao transactions",
+  "main": "./dist/src/index.js",
+  "types": "./dist/src/index.d.ts",
+  "scripts": {
+    "build": "yarn tsc --build --incremental --verbose .",
+    "fmt": "prettier --write .",
+    "check-fmt": "prettier --check .",
+    "clean": "rm -r ./dist",
+    "lint": "eslint --quiet .",
+    "prepare": "npm run build",
+    "test": "npm run coverage",
+    "coverage": "nyc -- npm run unit-test",
+    "unit-test": "mocha"
+  },
+  "author": "BitGo SDK Team <[email protected]>",
+  "license": "MIT",
+  "engines": {
+    "node": ">=18 <21"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/BitGo/BitGoJS.git",
+    "directory": "modules/utxo-coredao"
+  },
+  "lint-staged": {
+    "*.{js,ts}": [
+      "yarn prettier --write",
+      "yarn eslint --fix"
+    ]
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "nyc": {
+    "extension": [
+      ".ts"
+    ]
+  },
+  "dependencies": {
+    "@bitgo/utxo-lib": "^11.0.0"
+  }
+}

modules/utxo-coredao/src/descriptor.ts

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+import { BIP32Interface, bitgo } from '@bitgo/utxo-lib';
+
+/**
+ * Script type for a descriptor. This is either a p2sh (sh) or a p2wsh (wsh) script.
+ */
+export type ScriptType = 'sh' | 'wsh';
+
+/**
+ * Create a multi-sig descriptor to produce a coredao staking address
+ * @param scriptType segwit or legacy
+ * @param locktime locktime for CLTV
+ * @param m Total number of keys required to unlock
+ * @param orderedKeys
+ */
+export function createMultiSigDescriptor(
+  scriptType: ScriptType,
+  locktime: number,
+  m: number,
+  orderedKeys: BIP32Interface[]
+): string {
+  if (m > orderedKeys.length || m < 1) {
+    throw new Error(
+      `m (${m}) must be less than or equal to the number of keys (${orderedKeys.length}) and greater than 0`
+    );
+  }
+  if (locktime <= 0) {
+    throw new Error(`locktime (${locktime}) must be greater than 0`);
+  }
+
+  const xpubs = orderedKeys.map((key) => key.toBase58() + '/*');
+  return `${scriptType}(and_v(r:after(${locktime}),multi(${m},${xpubs.join(',')}))`;
+}
+
+/**
+ * Create a wallet descriptor to produce a coredao staking address for a standard BitGo wallet
+ * @param scriptType
+ * @param locktime
+ * @param rootWalletKeys
+ */
+export function createWalletDescriptor(
+  scriptType: ScriptType,
+  locktime: number,
+  rootWalletKeys: bitgo.RootWalletKeys
+): string {
+  return createMultiSigDescriptor(scriptType, locktime, 2, rootWalletKeys.triple);
+}

modules/utxo-coredao/src/index.ts

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+export * from './descriptor';

modules/utxo-coredao/test/unit/descriptor.ts

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+import * as assert from 'assert';
+import { createMultiSigDescriptor, createWalletDescriptor } from '../../src';
+import { testutil, bitgo } from '@bitgo/utxo-lib';
+
+// TODO BTC-1583: Add test fixtures for compiling descriptors
+describe('CoreDao descriptor', function () {
+  const keys = testutil.getKeyTriple('wasm-possum');
+  it('should fail if given invalid parameters', function () {
+    assert.throws(() => createMultiSigDescriptor('wsh', -1, 2, keys));
+    assert.throws(() => createWalletDescriptor('wsh', 0, new bitgo.RootWalletKeys(keys)));
+    assert.throws(() => createMultiSigDescriptor('wsh', 0, 2, keys));
+    assert.throws(() => createMultiSigDescriptor('wsh', 3, 4, keys));
+  });
+});

modules/utxo-coredao/tsconfig.json

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+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": ".",
+    "typeRoots": ["./node_modules/@types", "../../node_modules/@types"],
+    "allowJs": false,
+    "strict": true,
+    "useUnknownInCatchVariables": false
+  },
+  "include": ["src/**/*", "bin/**/*", "test/**/*"],
+  "exclude": ["node_modules"],
+  "references": [
+    {
+      "path": "../utxo-lib"
+    }
+  ]
+}