Internal Server Error 500 - Having issues running lowdb via Next.js and Netlify

[Max McKinney]

I've got a really simple DB setup that works when running locally but doesn't work once it's hosted on Netlify. Is there something special that needs to be done for this to work? I don't know if this is an issue on Next.js or a limitation of lowdb.

Here is my db file (root/db/db.js)

import {Low, JSONFileSync} from 'lowdb'

// Cluster DB Setup
const adapter = new JSONFileSync('cluster-db.json')
const clusterDB = new Low(adapter)

// Initialize if empty
clusterDB.read()
clusterDB.data ||= { clusters: [] }
clusterDB.write()

export {clusterDB}

And my only API route (root/pages/api/cluster.js

import {clusterDB} from '../../db/db'

export default async function handler(req, res) {

    await clusterDB.read()

    switch(req.method) {

        case 'POST':
            let newCluster = {severity: req.query.severity, comments: req.query.comments, date: req.query.date}
            clusterDB.data.clusters.push(newCluster)
            clusterDB.write()
            res.status(200).json({status: "Success", cluster: newCluster})
            break;

        case 'GET':
            if(clusterDB.data.clusters) {
                res.status(200).json(clusterDB.data.clusters)
            } else {
                res.status(404).json({status: "404"})
            }
            break;

    }

    res.status(200).json({test: "yay"})
}

I don't get any other error info besides a 500 error on the server-side. I get the error even if all I do is import the clusterDB object, so something is happening there.

[ezcax]

I just face this error and found a work around. JSONFileSync read file in runtime, netlify funtions won't include them in build. So I import them into my script import jpJson from "../data/jp.json" then write a custom adapter to return jpJson

[Max McKinney]

@thainq3127 Could you elaborate some more? I'm not entirely sure what the root of the problem is. Netlify won't include the Lowdb adapters? Is there a way to get Netlify to better include elements in the build? Running "npm run build && npm run start" also seems to work locally so you are right that something is happening on the Netlify side of things.

[ezcax]

Netlify won't include json files, I was too dumb to not google this first https://www.netlify.com/blog/2021/08/12/how-to-include-files-in-netlify-serverless-functions/

[typicode]

Since this issue is not related to lowdb's code, can it be closed?