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TypeError: Cannot assign to read only property 'toJSON' of object 'Error' #215

@JuergenSimon

Description

@JuergenSimon
  • Operating System version: macos 10.12.6, Node 9.5.0
  • Firebase SDK version: 5.9.0
  • Library version: 4.10.1
  • Firebase Product: admin (auth, database, storage, etc)

[REQUIRED] Step 3: Describe the problem

Installed firebase-admin using instructions here: https://www.npmjs.com/package/firebase-admin
Added firebase-admin to a module as instructed using:

var admin = require('firebase-admin');

in a module in a loopback node application. Application fails to start with the following error:

/Users/simon/Projects/APPICS/src/appics-backend/node_modules/firebase-admin/lib/utils/error.js:65
    FirebaseError.prototype.toJSON = function () {
                                   ^

TypeError: Cannot assign to read only property 'toJSON' of object 'Error'
    at /Users/abcdefg/Projects/APPICS/src/appics-backend/node_modules/firebase-admin/lib/utils/error.js:65:36
    at Object.<anonymous> (/Users/simon/Projects/APPICS/src/appics-backend/node_modules/firebase-admin/lib/utils/error.js:72:2)
    at Module._compile (module.js:660:30)
    at Object.Module._extensions..js (module.js:671:10)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/abcdefg/Projects/APPICS/src/appics-backend/node_modules/firebase-admin/lib/firebase-namespace.js:21:15)
    at Module._compile (module.js:660:30)
    at Object.Module._extensions..js (module.js:671:10)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
Waiting for the debugger to disconnect...

Process finished with exit code 1

Steps to reproduce:

What happened? How can we make the problem occur?
This could be a description, log/console output, etc.

Relevant Code:

'use strict';

let admin = require("firebase-admin");

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