[R4R]: new implement of BEP-127

.gitignore

@@ -4,4 +4,13 @@ build/
 pids
 logs
 .idea/
-contracts/flattened/*.sol
+contracts/flattened/*.sol
+
+#Hardhat files
+cache
+artifacts
+
+.env
+
+types
+typechain-types

.prettierignore

@@ -0,0 +1,3 @@
+artifacts
+cache
+node_modules

.prettierrc

@@ -0,0 +1,16 @@
+{
+  "printWidth": 100,
+  "trailingComma": "es5",
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "overrides": [
+    {
+      "files": "*.sol",
+      "options": {
+        "semi": true,
+        "printWidth": 100
+      }
+    }
+  ]
+}

README.md

@@ -37,6 +37,12 @@ truffle migrate
 truffle test
 ```
 
+Run hardhat test:
+```shell script
+npx hardhat compile
+npx hardhat test
+```
+
 Flatten all system contracts:
 ```shell script
 npm run flatten