nodejs determines whether it is in webstorm

With the popularity and use of Node.js, more and more developers are beginning to develop Node.js applications in WebStorm. In this process, sometimes it is necessary to use code to determine whether you are currently in the WebStorm environment, so that you can correctly handle some specific businesses. This article explains how to tell whether code is running in WebStorm in Node.js.

1. How to start in WebStorm

When writing a Node.js application, we can start it through the command line or start it in WebStorm. There are two ways to start Node.js applications in WebStorm:

(1) Use WebStorm's built-in command line tools;

(2) Use external command line tools, such as Git Bash, PowerShell etc.

No matter which startup method is used, WebStorm will add some environment variables and parameters to the command line. These environment variables and parameters can be used to determine whether the code is in WebStorm.

2. Determine whether it is in WebStorm

The method to determine whether it is in WebStorm is relatively simple. You only need to determine whether the environment variable "WEBSTORM_ENVIRONMENT" exists to determine whether you are currently in WebStorm.

The specific implementation is as follows:

const isWebStorm = process.env.WEBSTORM_ENVIRONMENT === 'YES';
if (isWebStorm) {
  console.log('当前代码运行在 WebStorm 中');
} else {
  console.log('当前代码运行在命令行中');
}

In this code, we first obtain the environment variables in the current Node.js process through process.env, and then determine whether WEBSTORM_ENVIRONMENT is equal to YES. If equal, it means that the current code is running in WebStorm.

3. Set environment variables in WebStorm

Although it is easy to determine whether you are in WebStorm, sometimes we also need to manually set some environment variables so that we can Handle specific business correctly. Setting environment variables in WebStorm is also very simple. You only need to do the following:

(1) Open WebStorm, select Run -> Edit Configurations...

(2) Find the configuration you want Startup items for environment variables, select from the list that appears.

(3) In Environment, add the required environment variables.

(4) Save the configuration and rerun the program.

After setting the environment variables, we can obtain the corresponding environment variables through process.env in the code.

4. Summary

This article introduces how to determine whether you are currently in the WebStorm environment through code, and how to set environment variables in WebStorm. After starting the Node.js application in WebStorm, some environment variables and parameters will be automatically added. This information can be used to determine whether the code is in WebStorm. However, when writing Node.js applications using WebStorm, you can also manually set environment variables to handle specific business needs. Either way, it can help developers complete their work more efficiently.

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