package.json - how to get IP address of local machine?

Question

I have a node.js application that uses webpack-dev-server, so in my package.json I have this to start it:

...
"scripts": {
    "start": "webpack-dev-server --host 192.168.0.13 --port 3001",
}
...

192.168.0.13 is my local IP address. As my network uses DHCP, is there a variable that I can use instead of my IP address in package.json or webpack.config.js file, so that it will always use my local IP?

Note: I have read that I can use 0.0.0.0, but this is apparently insecure, so is there something else I can use directly in my package.json or webpack.config.js file that will dynamically provide webpack-dev-server with my local IP address?

Possible duplicate of [Get local IP address in node.js](https://stackoverflow.com/questions/3653065/get-local-ip-address-in-node-js) — OmG, Oct 15 '17 at 11:49
Not really, this above question is directly in node, whereas my question is in package.json itself. — JoeTidee, Oct 15 '17 at 11:53
@OmG do you want to remove that 'duplicate' notification at the top of this question or proved an answer!? — JoeTidee, Oct 15 '17 at 12:11
json file modification can be done in different ways. You can use this package as an example. https://www.npmjs.com/package/edit-json-file — OmG, Oct 15 '17 at 12:15
And how do you specifically use this with webpack-dev-server? — JoeTidee, Oct 15 '17 at 12:19

score 2 · Accepted Answer · answered Oct 15 '17 at 12:45

2

I discovered that the host can be dynamically set within webpack.config.js using the host option:

...
devServer: {
    host: require('os').hostname().toLowerCase(),
    port: 3001,
    ...
},
...

answered Oct 15 '17 at 12:45

JoeTidee

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This does not really answer the original question, as it is depending on webpack. – waldgeist Apr 09 '21 at 08:23

score 0 · Answer 2 · answered Jan 23 '23 at 08:34

0

You can get your IP address inside of package.json with the ipconfig getifaddr en0 command like this:

"start": "webpack-dev-server --host \"$(ipconfig getifaddr en0)\" --port 3001"

answered Jan 23 '23 at 08:34

iuliu.net

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package.json - how to get IP address of local machine?

2 Answers2