Node-Fetch needs import on debug but does not work on production

Developers
,
1

I am using, node-fetch to query my devices on the device.js
On debug, I need to import
const fetch = require('node-fetch');
Without it, I get this error when running homey app run:

[ManagerDrivers] [Driver:solarpanel] [Device:09843584-dbce-45d8-bd3d-22068247553a] Error:  ReferenceError: fetch is not defined
    at SolarPanel.pullData (/app/drivers/solarpanel/device.js:26:7)

However, leaving the line in on production (deploying via homey app install), breaks the app. I get this error both in the developer tools and homeyscript:

Could not get device by ID.

Leaving that line out works fine in production for some reason.

2

What does “on debug” mean? Do you mean homey app run or homey app run --remote? (and if so, which one specifically?) Which Homey model?

Okay, I see the issue:

  • HP2023, homey app run --remote: fetch is defined (probably built into Node)
  • HP2023, homey app run: fetch is not defined
  • Older HP’s: fetch is not defined

So if you really want to use fetch, the best way is to ship your app with node-fetch as a dependency.

I think the error (“Could not get device by ID”) is unrelated.

1 Like
3

So if you really want to use fetch ,
Do you have an alternative in mind?

4

For Homeyscript, all you have available is fetch, for apps you can use something like http.min, but it depends on your specific requirements.

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