Adding a module throws assertionError

Question

I am working in my index.js file using the firebase-admin module from Firebase, everything works great until I decide to import the apple-icloud module (https://github.com/MauriceConrad/iCloud-API) to my index.js file.

I require both like this :

var iCloud = require('apple-icloud');
var admin = require('firebase-admin');

At the line where I use :

var db = admin.database();

The program stops and throws this error :

/home/loris/HHIOT/node_modules/@firebase/util/dist/index.node.cjs.js:64
        throw assertionError(message);
        ^

Error: Firebase Database (${JSCORE_VERSION}) INTERNAL ASSERT FAILED: Missing index implementation for fillDefaults
    at assertionError (/home/loris/HHIOT/node_modules/@firebase/util/dist/index.node.cjs.js:73:12)
    at Object.assert (/home/loris/HHIOT/node_modules/@firebase/util/dist/index.node.cjs.js:64:15)
    at /home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:3347:18
    at Object.map (/home/loris/HHIOT/node_modules/@firebase/util/dist/index.node.cjs.js:896:22)
    at IndexMap.addToIndexes (/home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:3345:31)
    at ChildrenNode.updateImmediateChild (/home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:3545:46)
    at ChildrenNode.updateChild (/home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:3560:25)
    at ChildrenNode.updateChild (/home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:3559:67)
    at SnapshotHolder.updateSnapshot (/home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:9368:41)
    at Repo.updateInfo_ (/home/loris/HHIOT/node_modules/@firebase/database/dist/index.node.cjs.js:12882:24)

I tried to import the apple-icloud module in a separate file, it does work. It seems this error only happens when apple-icloud and firebase-admin are both required.

I find out that if I require the module after firebase has been initialised, it does work, any idea why ?

What can be the cause of this ? Thanks.