问题描述
这是根package.json应用的react
{
"name": "movie-timeline","version": "0.1.0","private": true,"dependencies": {
"@fortawesome/fontawesome-svg-core": "^1.2.30","@testing-library/jest-dom": "^4.2.4","@testing-library/react": "^9.3.2","@testing-library/user-event": "^7.1.2","axios": "^0.19.2","bootstrap": "^4.5.2","create-react-app": "^3.4.1","react": "^16.13.1","react-dom": "^16.13.1","react-icons": "^3.10.0","react-router-dom": "^5.2.0","react-scripts": "3.4.2","react-spring": "^8.0.27"
},"scripts": {
"dev": "set PORT=3006 && react-scripts start","start": "serve -s build","build": "react-scripts build","test": "react-scripts test","eject": "react-scripts eject"
},"proxy": "http://localhost:3006","eslintConfig": {
"extends": "react-app"
},"browserslist": {
"production": [
...
],"development": [
...
]
}
}
我添加了set PORT=3006 && react-scripts start"脚本，以便可以在本地和Heroku上运行。
这是heroku记录的内容：
$ heroku logs --tail
Warning: heroku update available from 7.38.2 to 7.42.6.
2020-08-12T22:32:51.450396+00:00 app[web.1]: npm ERR! errno ENOENT
2020-08-12T22:32:51.452680+00:00 app[web.1]: npm ERR! [email protected] start: `serve -s build`
2020-08-12T22:32:51.452896+00:00 app[web.1]: npm ERR! spawn ENOENT
2020-08-12T22:32:51.453058+00:00 app[web.1]: npm ERR!
2020-08-12T22:32:51.453205+00:00 app[web.1]: npm ERR! Failed at the [email protected] start script.
2020-08-12T22:32:51.453348+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2020-08-12T22:32:51.467442+00:00 app[web.1]:
2020-08-12T22:32:51.467627+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2020-08-12T22:32:51.467740+00:00 app[web.1]: npm ERR! /app/.npm/_logs/2020-08-12T22_32_51_460Z-debug.log
2020-08-12T22:32:51.556136+00:00 heroku[web.1]: Process exited with status 1
2020-08-12T22:32:51.706650+00:00 heroku[web.1]: State changed from starting to crashed
2020-08-13T00:12:06.031766+00:00 heroku[web.1]: State changed from crashed to starting
2020-08-13T00:12:29.908831+00:00 heroku[web.1]: Starting process with command `npm start`
2020-08-13T00:12:34.256591+00:00 app[web.1]:
2020-08-13T00:12:34.256605+00:00 app[web.1]: > [email protected] start /app
2020-08-13T00:12:34.256606+00:00 app[web.1]: > serve -s build
2020-08-13T00:12:34.256606+00:00 app[web.1]:
2020-08-13T00:12:34.267835+00:00 app[web.1]: sh: 1: serve: not found
2020-08-13T00:12:34.277638+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2020-08-13T00:12:34.277976+00:00 app[web.1]: npm ERR! syscall spawn
2020-08-13T00:12:34.278160+00:00 app[web.1]: npm ERR! file sh
2020-08-13T00:12:34.278407+00:00 app[web.1]: npm ERR! errno ENOENT
// ...
请问有人可以帮我吗？
解决方法
当您推送到Heroku时，它会在package.json应用中的react中运行此脚本：
{
"scripts": {
"start": "serve -s build",// other
},}
这已从heroku日志中得到确认...
// ...
2020-08-13T00:12:34.256605+00:00 app[web.1]: > [email protected] start /app
2020-08-13T00:12:34.256606+00:00 app[web.1]: > serve -s build
2020-08-13T00:12:34.256606+00:00 app[web.1]:
2020-08-13T00:12:34.267835+00:00 app[web.1]: sh: 1: serve: not found
// ...
由于您在本地计算机上全局安装了serve，因此该项目得以运行。
因此，您需要在本地安装serve，heroku才能在启动应用程序时运行。
$ npm install --save-dev serve
这样，heroku将能够运行您的"start"脚本。