在package.json中设置env var以与电子重装一起使用？ [英] Setting an env var in package.json for use with electron-reload?

问题描述

我通常在macOS上进行开发，但是为了解决某些特定于Windows的问题，我将该项目移至Windows 10。进行更改后，我使用 electron-reload 重新加载应用程序。

I usually develop on macOS but I've moved the project over to Windows 10 in order to work on some Windows-specific issues. I use electron-reload to reload the app when changes are made. It's been working wonderfully on macOS but breaks on Windows.

使用下面的设置，然后 npm start 来启动macOS。应用程序，在Windows上会引发错误：'APP__DEV'不被识别为内部或外部命令

Using the setup below, and npm start to start the app, on Windows it throws an error: "'APP__DEV' is not recognized as an internal or external command"

我做错了吗，macOS更宽容了？我看到了这个问题：在package.json中设置process.env var 并且接受的答案与我正在执行的操作相同，因此感到困惑。

Am I doing this wrong and macOS is just more "forgiving"? I saw this question: Setting process.env var in package.json and the accepted answer looks the same as what I am doing so I'm confused.

在我跳下兔子洞之前，我想我会问我所做的事情是否存在简单的错误。

Before I jump down the rabbit hole, I thought I would ask if there is something simple wrong with what I am doing.

如果有关系-将项目移至Windows时我没有进行CTLF等任何转换-我只是使用 DropBox 复制了它。

If it matters – I didn't do any conversion of CTLF, etc when moving the project to Windows – I just copied it over using DropBox.

package.json

package.json

"start": "APP_DEV=true electron .",

---

Main.js

---

Main.js

let isDev = process.env.APP_DEV ? (process.env.APP_DEV.trim() == "true") : false;

if (isDev) {
    require('electron-reload')(__dirname);
}

推荐答案

语法 ENV_VAR =值程序参数是UNIX。 Windows没有提供一种设置环境变量并在同一命令中运行程序的方法，但是，这通常会起作用： set ENV_VAR = value&&程序参数（因此，在您的情况下： set APP_DEV = true&& electronic。是您所要的）。作为建议，请查看 dotenv 和/或跨操作系统，使您的项目在所有系统上都可以使用（就此而言），而不会造成太多麻烦。

The syntax ENV_VAR=value program arguments is a UNIX thing. Windows does not provide a way to set an environment variable and run a program in the same command, however, this will generally work: set ENV_VAR=value && program arguments (so, in your case: set APP_DEV=true && electron . is what you're looking for). As a suggestion, look at dotenv and/or cross-os to make your project more usable (in this regard) on all systems without too much headache.

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