Heroku上没有安装babel-node

Question

我在Heroku上使用ES6语法的babel-node，但在部署时出现构建错误。它说“babel-node：not found”。我已经尝试在本地计算机上进行全新安装，并且完美地工作。 Package.json：

{ 
    "name": "secret", 
    "version": "0.0.0", 
    "private": true, 
    "scripts": { 
    "start": "./node_modules/.bin/babel-node ./bin/www" 
    }, 
    "engines": { 
    "node": "7.5.0", 
    "npm": "5.0.3" 
    }, 
    "dependencies": { 
    "babel-cli": "^6.24.1", 
    "babel-preset-es2015": "^6.24.1", 
    "babel-preset-stage-0": "^6.24.1", 
    ... 
    } 
} 

我感谢您的帮助！ :)

2017-07-17T11:02:26.997876+00:00 heroku[web.1]: State changed from crashed to starting 
2017-07-17T11:02:31.839278+00:00 heroku[web.1]: Starting process with command `npm start` 
2017-07-17T11:02:38.074157+00:00 heroku[web.1]: State changed from starting to crashed 
2017-07-17T11:02:38.062607+00:00 heroku[web.1]: Process exited with status 1 
2017-07-17T11:02:37.865774+00:00 app[web.1]: 
2017-07-17T11:02:37.865786+00:00 app[web.1]: > secret@0.0.0 start /app 
2017-07-17T11:02:37.865787+00:00 app[web.1]: > babel-node ./bin/www 
2017-07-17T11:02:37.865787+00:00 app[web.1]: 
2017-07-17T11:02:37.936361+00:00 app[web.1]: sh: 1: babel-node: not found 
2017-07-17T11:02:37.966452+00:00 app[web.1]: npm ERR! file sh 
2017-07-17T11:02:37.966683+00:00 app[web.1]: npm ERR! code ELIFECYCLE 
2017-07-17T11:02:37.966931+00:00 app[web.1]: npm ERR! errno ENOENT 
2017-07-17T11:02:37.967106+00:00 app[web.1]: npm ERR! syscall spawn 
2017-07-17T11:02:37.967287+00:00 app[web.1]: npm ERR! secret@0.0.0 start: `babel-node ./bin/www` 
2017-07-17T11:02:37.967430+00:00 app[web.1]: npm ERR! spawn ENOENT 
2017-07-17T11:02:37.967588+00:00 app[web.1]: npm ERR! 
2017-07-17T11:02:37.967733+00:00 app[web.1]: npm ERR! Failed at the secret@0.0.0 start script. 
2017-07-17T11:02:37.967873+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above. 
2017-07-17T11:02:37.969151+00:00 app[web.1]: 
2017-07-17T11:02:37.969374+00:00 app[web.1]: npm ERR! A complete log of this run can be found in: 
2017-07-17T11:02:37.969484+00:00 app[web.1]: npm ERR!  /app/.npm/_logs/2017-07-17T11_02_37_957Z-debug.log 
2017-07-17T11:25:52.044791+00:00 heroku[web.1]: State changed from crashed to starting 
2017-07-17T11:25:54.841341+00:00 heroku[web.1]: Starting process with command `npm start` 
2017-07-17T11:25:57.407691+00:00 heroku[web.1]: Process exited with status 1 
2017-07-17T11:25:57.413873+00:00 heroku[web.1]: State changed from starting to crashed 
2017-07-17T11:25:57.310176+00:00 app[web.1]: 
2017-07-17T11:25:57.310190+00:00 app[web.1]: > secret@0.0.0 start /app 
2017-07-17T11:25:57.310191+00:00 app[web.1]: > babel-node ./bin/www 
2017-07-17T11:25:57.310192+00:00 app[web.1]: 
2017-07-17T11:25:57.316940+00:00 app[web.1]: sh: 1: babel-node: not found 
2017-07-17T11:25:57.335019+00:00 app[web.1]: npm ERR! file sh 
2017-07-17T11:25:57.335287+00:00 app[web.1]: npm ERR! code ELIFECYCLE 
2017-07-17T11:25:57.335517+00:00 app[web.1]: npm ERR! errno ENOENT 
2017-07-17T11:25:57.335735+00:00 app[web.1]: npm ERR! syscall spawn 
2017-07-17T11:25:57.335933+00:00 app[web.1]: npm ERR! secret@0.0.0 start: `babel-node ./bin/www` 
2017-07-17T11:25:57.336095+00:00 app[web.1]: npm ERR! spawn ENOENT 
2017-07-17T11:25:57.336280+00:00 app[web.1]: npm ERR! 
2017-07-17T11:25:57.336449+00:00 app[web.1]: npm ERR! Failed at the secret@0.0.0 start script. 
2017-07-17T11:25:57.336614+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above. 
2017-07-17T11:25:57.337985+00:00 app[web.1]: 
2017-07-17T11:25:57.338232+00:00 app[web.1]: npm ERR! A complete log of this run can be found in: 
2017-07-17T11:25:57.338379+00:00 app[web.1]: npm ERR!  /app/.npm/_logs/2017-07-17T11_25_57_323Z-debug.log 

Answer 1

有点晚，但这里是什么，我认为你缺少：

步骤（1）：npm install --save babel-cli babel-preset-env在终端

注意事项第1步：不要保存到dev因为这将需要你设置NPM_CONFIG_PRODUCTION = false

步骤（2）：你没有编译任何东西给babel而没有添加babel样板文件或使用babelrc文件。最简单的方法是在主应用程序文件夹中创建一个.babelrc文件，即。同一个你的package.json中输入以下内容：在第2步

{ 
    "presets": ["env"] 
} 

注：随着ENV的使用预置您不需要巴贝尔预设-ES2015等

步骤（ 3）：你现在可以使用babel-node运行你的代码，所以在你的情况下执行你的启动脚本，即。 ./node_modules/.bin/babel-node ./bin/www

我建议通过NPM模块阅读，如果您需要进一步的指导了解预设的逻辑：https://www.npmjs.com/package/babel-preset-env

此外，我会使用像PM2的过程经理建议。这允许您的节点实例在崩溃时保持活动状态。用来做这件事的永远模块，但是pm2更好。以下是您的package.json中的一个启动脚本示例：

“scripts”：{ “start”：“node ./node_modules/.bin/pm2 start main.json --attach --env production” }

Procfile（注意，我使用nginx的，但只是故宫开始就正常工作）：

web: bin/start-nginx npm start 
worker: node ./node_modules/.bin/pm2 start worker.json --attach 

这里将是你的main.json与args设置为使用通天节点（注意，保持实例到1，不要在Heroku上的网络测试仪上分叉）：

main.json：

{ 
    "name": "the_awesome", 
    "script": "app.js", 
    "instances": 1, 
    "exec_mode": "cluster" 
} 

worker.json：

{ 
    "name": "worker", 
    "script": "/app/lib/worker.js" 
} 

（4）添加一个需要（ '巴别塔注册'）钩到您的app.js和worker.js如果您正在使用pm2在集群模式下。如果您使用pm2而不是集群模式，或者只是不使用pm2，那么您可以直接使用babel-node来运行.js或es6文件。

最后，要检查是否真的安装了babel节点，您可以执行如下：

heroku run bash -a {name of your app} 
ls ./node_modules/.bin //babel-node should be present 

祝你好运！