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ReferenceError: _typeof is not defined /w CRA 2.0

See original GitHub issue

Using Create-React-App v2.0 i get the following error in the console, when loading Quagga. The webcam loads up fine, and displays an image, but it will not scan barcodes.

blob:http://localhost:3000/b34a09e5-04a0-495f-bcc5-91af1e544d8b:1472 Uncaught ReferenceError: _typeof is not defined

Below you can see a (maybe) more clear version of what i’m seeing. screen shot 2018-10-10 at 15 35 50

Issue Analytics

State:
Created 5 years ago
Comments:9

Top GitHub Comments

3reactions

LimmaPauluscommented, Jun 11, 2021

I managed to bypass this problem with the following import:

import Quagga from 'quagga/dist/quagga';

1reaction

cedmcommented, Apr 17, 2019

I’m getting the same error, but not using CRA.

I’m running a fairly basic Rails 5 with Webpack setup, and the _typeof is not defined error happens when I use the Quagga NPM package and load it via Webpack (import Quagga from 'quagga'). If I bypass Webpack and link to it directly via a <script scr="quagga.min.js"> tag (I manually downloaded the quagga.min.js file from Github), everything works fine.

I don’t understand what the issue is…