Add eslint for ts

.eslintrc

@@ -0,0 +1,15 @@
+{
+    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "plugins": ["@typescript-eslint", "prettier"],
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/eslint-recommended",
+        "plugin:@typescript-eslint/recommended",
+        "prettier"
+    ],
+    "rules": {
+        "no-console": 1,
+        "prettier/prettier": 2
+    }
+}

package.json

@@ -7,10 +7,19 @@
   "author": "Sambo Chea",
   "license": "MIT",
   "private": false,
+  "dependencies": {},
   "devDependencies": {
-    "prettier": "^2.2.1"
+    "@typescript-eslint/eslint-plugin": "^4.17.0",
+    "@typescript-eslint/parser": "^4.17.0",
+    "eslint": "^7.21.0",
+    "eslint-config-prettier": "^8.1.0",
+    "eslint-plugin-prettier": "^3.3.1",
+    "prettier": "^2.2.1",
+    "typescript": "^4.2.3"
   },
   "scripts": {
-    "lint": "prettier --config .prettierrc 'src/**/*.ts' --write"
+    "build": "tsc -p tsconfig.json",
+    "lint": "eslint . --ext .ts",
+    "prettier": "prettier --config .prettierrc 'src/**/*.ts' --write"
   }
 }

tsconfig.json

@@ -1,20 +1,21 @@
 {
-  "compilerOptions": {
+    "compilerOptions": {
-    "target": "es5",
+        "target": "es5",
-    "allowJs": true,
+        "allowJs": true,
-    "skipLibCheck": true,
+        "skipLibCheck": true,
-    "esModuleInterop": true,
+        "esModuleInterop": true,
-    "allowSyntheticDefaultImports": true,
+        "allowSyntheticDefaultImports": true,
-    "strict": true,
+        "strict": true,
-    "forceConsistentCasingInFileNames": true,
+        "forceConsistentCasingInFileNames": true,
-    "noFallthroughCasesInSwitch": true,
+        "noFallthroughCasesInSwitch": true,
-    "module": "commonjs",
+        "module": "commonjs",
-    "moduleResolution": "node",
+        "moduleResolution": "node",
-    "resolveJsonModule": true,
+        "resolveJsonModule": true,
-    "isolatedModules": true,
+        "isolatedModules": true,
-    "noEmit": true,
+        "noEmit": true,
-    "declaration": true,
+        "declaration": true,
-    "outDir": "./dist"
+        "outDir": "dist",
-  },
+        "rootDir": "src"
-  "include": ["src/**/*"]
+    },
+    "include": ["src/**/*"]
 }