Heroku构建失败: heroku-prebuild

Question

我最近更新了一个我正在尝试部署的项目。它以前是成功构建的，但现在遇到了以下错误消息。我不确定是什么错误，因为我已经尝试删除包-lock.json，清除npm缓存并重新安装npm。提前感谢！

-----> Node.js app detected

-----> Creating runtime environment

       NPM_CONFIG_LOGLEVEL=error
       NODE_ENV=production
       NODE_MODULES_CACHE=true
       NODE_VERBOSE=false

-----> Installing binaries
       engines.node (package.json):  unspecified
       engines.npm (package.json):   unspecified (use default)

       Resolving node version 8.x...
       Downloading and installing node 8.12.0...
       Using default npm version: 6.4.1

-----> Building dependencies
       Running heroku-prebuild

       > kickstart@1.0.0 heroku-prebuild /tmp/build_ddb0ffb55870b12204585dc338aab661
       > next build

sh: 1: next: not found
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! kickstart@1.0.0 heroku-prebuild: `next build`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the kickstart@1.0.0 heroku-prebuild script.

package.json

{
  "name": "kickstart",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "heroku-prebuild": "next build",
    "test": "mocha",
    "dev": "node server.js",
    "start": "next build"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "fs-extra": "^5.0.0",
    "ganache-cli": "^6.1.0",
    "mocha": "^4.1.0",
    "next": "^4.2.3",
    "next-routes": "^1.3.0",
    "react": "^16.2.0",
    "react-dom": "^16.2.0",
    "semantic-ui-css": "^2.3.0",
    "semantic-ui-react": "^0.77.2",
    "solc": "^0.4.21",
    "truffle-hdwallet-provider": "0.0.3",
    "web3": "1.0.0-beta.26"
  },
  "devDependencies": {
    "eslint-config-airbnb": "^16.1.0",
    "eslint-plugin-import": "^2.9.0",
    "eslint-plugin-jsx-a11y": "^6.0.3",
    "eslint-plugin-react": "^7.7.0"
  }
}

Answer 1

不是100%确定，但问题出在调用next build的heroku-prebuild中。此时，还没有安装任何依赖项。您应该在不同的阶段运行next build。您已经将其作为start脚本。