Add eslint + prettier

Author: adaex

.eslintignore

@@ -0,0 +1 @@
+dist

.eslintrc.json

@@ -0,0 +1,22 @@
+{
+  "env": {
+    "es2021": true,
+    "mocha": true,
+    "node": true
+  },
+  "extends": ["standard-with-typescript", "prettier"],
+  "parserOptions": {
+    "ecmaVersion": 2021,
+    "project": "tsconfig.json",
+    "sourceType": "module"
+  },
+  "plugins": ["@typescript-eslint"],
+  "rules": {
+    "@typescript-eslint/explicit-function-return-type": "off",
+    "@typescript-eslint/naming-convention": "off",
+    "@typescript-eslint/no-namespace": "off",
+    "@typescript-eslint/restrict-plus-operands": "off",
+    "@typescript-eslint/restrict-template-expressions": "off",
+    "@typescript-eslint/strict-boolean-expressions": "off"
+  }
+}

.prettierignore

@@ -0,0 +1 @@
+dist

.prettierrc.json

@@ -0,0 +1,5 @@
+{
+  "printWidth": 160,
+  "semi": false,
+  "singleQuote": true
+}

package.json

@@ -19,17 +19,26 @@
   "scripts": {
     "dev": "tsc -w",
     "build": "rm -rf dist && tsc && cp package.json *.md dist && rm -rf dist/test",
-    "sync": "curl -X PUT 'https://npm.taobao.org/sync/coa-wx-isv?sync_upstream=true'",
-    "publish-prerelease": "yarn build && yarn version --prerelease && cp package.json dist && cd dist && npm publish"
+    "lint": "eslint . ",
+    "prettier": "prettier -w .",
+    "sync": "curl -X PUT 'https://npm.taobao.org/sync/coa-wx-isv?sync_upstream=true'"
   },
   "dependencies": {
-    "coa-echo": "^1.0.8",
+    "coa-echo": "^1.1.1",
     "coa-error": "^1.5.2",
-    "coa-helper": "^1.1.1",
+    "coa-helper": "^1.2.1",
     "coa-xml": "^1.0.2"
   },
   "devDependencies": {
-    "@types/node": "^15.3.1",
-    "typescript": "^4.2.4"
+    "@types/node": "^15.6.1",
+    "@typescript-eslint/eslint-plugin": "^4.25.0",
+    "eslint": "^7.27.0",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-config-standard-with-typescript": "^20.0.0",
+    "eslint-plugin-import": "^2.23.4",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^5.1.0",
+    "prettier": "^2.3.0",
+    "typescript": "^4.3.2"
   }
 }