如何在Heroku安装后编译Typescript? [英] How do I compile Typescript at Heroku postinstall?

问题描述

我不想上传预编译的dist目录，而是要在服务器端编译src.

Instead of uploading the precompiled dist directory, I want to compile src at server side instead.

这是我在package.json中的脚本:

Here are my scripts inside package.json:

"scripts": {
    "test": "echo \"No test specified\" && exit 0",
    "start": "node dist/app.js",
    "postinstall": "tsc"
  }

这里是依赖项:

"dependencies": {
    "@types/express": "^4.11.1",
    "@types/pg": "^7.4.4",
    "@types/socket.io": "^1.4.31",
    "body-parser": "^1.18.2",
    "express": "^4.16.2",
    "pg": "^7.4.1",
    "socket.io": "^2.0.4",
    "tslint": "^5.9.1",
    "typescript": "^2.7.2"
  }

由于"npm install将在安装过程中将node_modules/.bin文件夹添加到PATH环境变量中"，Heroku应该能够直接调用它.

Since 'npm install will add the node_modules/.bin folder to the PATH environment variable during installation', Heroku should be able to call it directly.

但这是我得到的错误:

Building dependencies
       Installing node modules (package.json + package-lock)

       > bilgi-yarismasi@1.0.0 postinstall /tmp/build_afa42c7943d4b71d2b48a016ae3b9e50
       > tsc

       sh: 1: tsc: not found
       npm ERR! file sh
       npm ERR! code ELIFECYCLE
       npm ERR! errno ENOENT
       npm ERR! syscall spawn
       npm ERR! bilgi-yarismasi@1.0.0 postinstall: `tsc`
       npm ERR! spawn ENOENT
       npm ERR!
       npm ERR! Failed at the bilgi-yarismasi@1.0.0 postinstall script.
       npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

       npm ERR! A complete log of this run can be found in:
       npm ERR!     /tmp/npmcache.LTxbD/_logs/2018-02-25T10_36_06_374Z-debug.log
-----> Build failed

推荐答案

您需要从npm脚本中调用 tsc .否则，Heroku会尝试查找名为 tsc 的全局依赖项.

You need to call tsc from an npm script. Otherwise Heroku tries to find a global dependency named tsc.

在您的 package.json 中创建一个新的npm脚本:

Create a new npm script in your package.json:

"tsc": "tsc"

现在将"postinstall":"tsc" 替换为:

"postinstall": "npm run tsc"

这篇关于如何在Heroku安装后编译Typescript?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！