Import JSON inside NPM Module

Question

I made an npm module , this module export a function that load a json file and then export the result ( a little bit simplified )

The probleme is when I import this module inside another project I have this error:

 no such file or directory, open 'C:\Users\{my_username}\github\{name_of_the_project}\file.json'

I looks like when I import my module, it try to read the json inside the current directory and not inside the npm module .

The code inside my module:

export default function() {
    return readFile('./swagger.json')
        .then(data => JSON.parse(data))
}

Answer 1

Final answer (for ES Module):

import { readFile } from 'fs/promises';
import { fileURLToPath } from 'url';
import path from 'path';

export default function() {
    const __filename = fileURLToPath(import.meta.url);
    const __dirname = path.dirname(__filename);

    return readFile(`${__dirname}/swagger.json`)
        .then(data => JSON.parse(data))
}

If you don't use ES Module (but commonJS), __dirname already exist so you can do:

export default function() {
        return readFile(`${__dirname}/swagger.json`)
            .then(data => JSON.parse(data))
    }

Answer 2

I think this topic may help you fix your issue

https://stackoverflow.com/questions/35048686/whats-the-difference-between-path-resolve-and-path-join#:~:text=Adding%20a%20%2Fpath%20as%20any%20of%20arguments.&text=resolve()%20process%20the%20sequence,with%20root%20and%20produce%20output .

best of luck,,,