问下大家，怎么通过前端的源代码知道用的是什么版本的node？

我接手一个项目，里面有些前端代码需要稍微改点东西，然后我需要npm install 下载包，关键是我不知道项目用的node版本是多少，导致我下载的时候老是报错。
就问下大家，如何根据项目代码确定用的是哪个版本的node？
主要是我中途接手的，没地方去问对方版本多少？
package.json代码如下

{
  "name": "ncov",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "start": "npm run serve",
  "serve": "vue-cli-service serve",
  "build": "vue-cli-service build",
  "lint": "vue-cli-service lint",
  "xls": "cd src/info && node xls.js"
  },
  "dependencies": {
    "@xkeshi/vue-barcode": "^1.0.0",
  "axios": "^0.21.4",
  "core-js": "^3.6.5",
  "element-ui": "^2.15.1",
  "html2canvas": "^1.4.1",
  "js-md5": "^0.7.3",
  "moment": "^2.29.4",
  "node-sass": "^4.14.1",
  "node-xlsx": "^0.21.0",
  "sass-loader": "^10.0.3",
  "sass-resources-loader": "^2.2.5",
  "vant": "^2.12.12",
  "vue": "^2.6.11",
  "vue-qr": "^2.3.0",
  "vue-router": "^3.2.0",
  "vuex": "^3.4.0"
  },
  "devDependencies": {
    "@vue/cli-plugin-babel": "~4.5.0",
  "@vue/cli-plugin-router": "^4.5.12",
  "@vue/cli-plugin-vuex": "^4.5.12",
  "@vue/cli-service": "~4.5.0",
  "vue-template-compiler": "^2.6.11"
  },
  "eslintConfig": {
    "root": true,
  "env": {
      "node": true
  },
  "extends": [
      "plugin:vue/essential",
  "eslint:recommended"
  ],
  "parserOptions": {
      "parser": "babel-eslint"
  },
  "rules": {}
  },
  "browserslist": [
    "> 1%",
  "last 2 versions",
  "not dead"
  ]
}