Thank you

.github/workflows/main.yaml

@@ -0,0 +1,21 @@
+name: unit tests
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Run unit tests
+        run: yarn test

.gitignore

@@ -103,10 +103,11 @@ dist
 # TernJS port file
 .tern-port
 
+.DS_Store
 package-lock.json
 .idea
 cache/
 artifacts/
 deployments/
-
+.openzeppelin/
 

.prettierrc.js

@@ -0,0 +1,35 @@
+module.exports = {
+    overrides: [
+        {
+            files: "*.sol",
+            options: {
+                bracketSpacing: false,
+                printWidth: 145,
+                tabWidth: 4,
+                useTabs: false,
+                singleQuote: false,
+                explicitTypes: "never",
+            },
+        },
+        {
+            files: "*.ts",
+            options: {
+                printWidth: 145,
+                semi: false,
+                tabWidth: 4,
+                useTabs: false,
+                trailingComma: "es5",
+            },
+        },
+        {
+            files: "*.js",
+            options: {
+                printWidth: 145,
+                semi: false,
+                tabWidth: 4,
+                useTabs: false,
+                trailingComma: "es5",
+            },
+        },
+    ],
+}

.solhint.json

@@ -0,0 +1,8 @@
+{
+  "extends": "solhint:default",
+  "rules": {
+    "avoid-suicide": "error",
+    "avoid-sha3": "warn",
+    "max-line-length": ["warn", 300]
+  }
+}