Realm-js: constructor must be of type 'function' on debugger mode

Created on 6 Oct 2018 · 32Comments · Source: realm/realm-js

Goals

It is working as well without debugger mode. But on debugger mode, we are getting error when try to create Realm object with schema parameters.

Expected Results

It should work like without debugger

Actual Results

Code Sample

Version of Realm and Tooling

Realm JS SDK Version: 2.17.0
React Native: 0.57.1
Client OS: Android
Which debugger for React Native: Chrome

O-Community T-Bug

Source

mistikk

👍18

Most helpful comment

It is related from last version of realm(v2.18.0). You should downgrade to 2.16.0.
And dont forgot to check version number on package.json. It should be "realm": "2.16.0" not "realm": "ˆ2.16.0". I lost 1 day for that :triumph:

After that, run this code for reset all packages;
watchman watch-del-all && rm -rf $TMPDIR/react-native-packager-cache-* && rm -rf $TMPDIR/metro-bundler-cache-* && rm -rf node_modules/ && yarn cache clean && yarn install && yarn start -- --reset-cache

mistikk on 13 Oct 2018

👍7 🎉3 ❤2 😄2

All 32 comments

I am still getting this error with realm v2.18.0

mistikk on 9 Oct 2018

👍4

ithustle on 10 Oct 2018

I'm having the exact same issue as op

Copterdoctor on 10 Oct 2018

+1 . How to fix this. Previously its working fine. I updated my OS. started getting this error. Please help

### Version of Realm and Tooling
Realm JS SDK Version: 2.16.0
React Native: 0.57.0
Client OS: Android
Which debugger for React Native: Chrome

screenshot_20181011-175639

NaveenJ-ICARUS on 11 Oct 2018

Version 2.16.0 its working fine on RN 0.57.2

ithustle on 11 Oct 2018

@NaveenJayaram94 You upgraded from which OS to which OS?

bmunkholm on 11 Oct 2018

Actually, I've downgraded to 2.16.0. I did it yesterday. I was suffering about last 2 weeks because of this. I'm working on two differents machines. Win and MacOS. (10 and High Sierra)

ithustle on 11 Oct 2018

👍1

I downgraded from Ubuntu 18.10 to 17.10.
Yesterday in 18.10 its working fine, today downgraded my os, in first compile only its throwing this error. I don't know what to do

NaveenJ-ICARUS on 11 Oct 2018

Happening to me too. I haven't updated my OS or realm version. Not sure this is related, but the error started popping up after I ran these commands:

rm -rf node_modules
npm cache clean
npm install

jgplane on 11 Oct 2018

but its work well without debugging, but without chrome debugging its very difficult develop RN App. Searching for other mobile NoSql DB.

NaveenJ-ICARUS on 11 Oct 2018

@NaveenJayaram94 Have you tried to use Safari on Mac? Others have great experience with that instead of Chrome.

bmunkholm on 11 Oct 2018

@bmunkholm , I use Ubuntu 17.10. so only option left is the firefox browser. Tomorrow I'll test it and update here. thanks

NaveenJ-ICARUS on 11 Oct 2018

+1111

figure-ai on 12 Oct 2018

@bmunkholm even in firefox same error. searching for alternatives with NoSQL and real time database.

NaveenJ-ICARUS on 12 Oct 2018

👍1

Some fix for this?

wesleyguirra on 13 Oct 2018

mistikk on 13 Oct 2018

👍7 🎉3 ❤2 😄2

@mistikk Thanks budy. You saved me from disaster
it worked after downgrading my node from 10.X.X to 9.8.0

NaveenJ-ICARUS on 15 Oct 2018

+1 on react-native for 2.18.0

JackHull on 21 Oct 2018

I have same issue in v2.18.0. Downgrade to v2.17.0 is solve.

sinhpn92 on 25 Oct 2018

Got it fixed by upgrading to 2.19.0-rc.4.

JackHull on 27 Oct 2018

I've commented out the line 80 from "node_modules\realm\lib\browser\index.js".

[80] //config = this._constructor(config);
[81] let schemas = typeof config == 'object' && config.schema;
[82] let constructors = schemas ? {} : null;

It had a very slow start (when debug is on) but it worked fine for me on v2.19.0.