Heroku：找不到模块“pg”？
[英]Heroku : Cannot find module 'pg'?
问题描述
2021-03-19T16:05:15.937220+00:00 app[web.1]: Error: Cannot find module 'pg' 
2021-03-19T16:05:15.937220+00:00 app[web.1]：错误：找不到模块“pg”
2021-03-19T16:05:15.937220+00:00 app[web.1]: Require stack: 2021-03-19T16:05:15.937220+00:00 应用程序 [web.1]：需要堆栈：
2021-03-19T16:05:15.937220+00:00 app[web.1]: - /app/models/db_schema.js 2021-03-19T16:05:15.937220+00:00 应用程序 [web.1]:-/app/models/db_schema.js
2021-03-19T16:05:15.937221+00:00 app[web.1]: - /app/controllers/event_controller.js 2021-03-19T16:05:15.937221+00:00 应用程序 [web.1]: - /app/controllers/event_controller.js
2021-03-19T16:05:15.937221+00:00 app[web.1]: - /app/router/event_routes.js 2021-03-19T16:05:15.937221+00:00 应用 [web.1]: - /app/router/event_routes.js
2021-03-19T16:05:15.937221+00:00 app[web.1]: - /app/app.js 2021-03-19T16:05:15.937221+00:00 应用 [web.1]: - /app/app.js
This is my package.json这是我的 package.json
{ {
"name": "backend", “名称”：“后端”，
"version": "1.0.0", “版本”：“1.0.0”，
"description": "", “描述”： ””，
"main": "app.js", “主”：“app.js”，
"engines": { “引擎”： {
"node": "v14.12.0",
"npm": "6.14.8"
}, },
"scripts": { “脚本”：{
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node app.js",
"start:dev": "nodemon app.js",
"heroku-postbuild": "cd frontend && npm install && npm run build"
}, },
"repository": { “存储库”：{
"type": "git",
"url": "git+https://github.com/shivamsouravjha/shawn-the-sheep.git"
}, },
"author": "shivam", “作者”：“shivam”，
"license": "ISC", “许可证”：“ISC”，
"bugs": { “错误”：{
"url": "https://github.com/shivamsouravjha/shawn-the-sheep/issues"
}, },
"homepage": "https://github.com/shivamsouravjha/shawn-the-sheep#readme", “主页”：“https://github.com/shivamsouravjha/shawn-the-sheep#readme”，
"devDependencies": { “开发依赖”：{
"nodemon": "^2.0.7",
"pg": "^8.5.1",
"router": "^1.3.5"
}, },
"dependencies": { “依赖”：{
"cors": "^2.8.5",
"dotenv": "^8.2.0",
"express": "^4.17.1",
"express-validator": "^6.10.0"
} }
} }
1 个解决方案
解决方案1
1 已采纳 2021-03-19 17:39:01
So the file structure would be:所以文件结构是：
/app /应用程序
----app.js ----app.js
----node_modules/ ----node_modules/
It is also necessary to move pg from devDependencies into Dependencies and run npm run build.还需要将 pg 从 devDependencies 移动到 Dependencies 并运行 npm run build。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.