finish all return type

package.json

@@ -7,6 +7,7 @@
     "serve": "vite",
     "build": "run-p type-check build-only",
     "preview": "vite preview",
+    "test": "jest",
     "build-only": "vite build",
     "type-check": "vue-tsc --noEmit",
     "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore"
@@ -46,6 +47,7 @@
   "devDependencies": {
     "@osmonauts/telescope": "^0.88.2",
     "@rushstack/eslint-patch": "^1.1.4",
+    "@types/jest": "^29.5.0",
     "@types/marked": "^4.0.8",
     "@types/node": "^18.11.12",
     "@types/numeral": "^2.0.2",
@@ -55,6 +57,7 @@
     "@vue/tsconfig": "^0.1.3",
     "eslint": "^8.22.0",
     "eslint-plugin-vue": "^9.3.0",
+    "jest": "^29.5.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.7.1",
     "sass": "^1.58.0",