Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Super expression must either be null or a function while loading wavesurfer

See original GitHub issue

After upgrading to latest version 3.1.0 of wavesurfer. below error is coming while loading wavesurfer.js file.

 ERROR Error: Uncaught (in promise): TypeError: Super expression must either be null or a function (core.js.pre-build-optimizer.js:1449)
TypeError: Super expression must either be null or a function

It was working correctly for older version 3.0.0

Issue Analytics

State:
Created 4 years ago
Reactions:6
Comments:14

Top GitHub Comments

1reaction

aburaicommented, Oct 10, 2019

maybe we must change main definition in package.json and do not use the minified version i have no time currently to test it

0reactions

thijstriemstracommented, Oct 10, 2019

sounds good @aburai. see https://docs.npmjs.com/files/package.json#main

Top Results From Across the Web

Using Angular and nginx I get the error Uncaught TypeError

Using Angular and nginx I get the error Uncaught TypeError: Super expression must either be null or a function.

React Errors : Super expression must either be null or a ...

This is an easy to find and fix issue. If a component is exported with the default keyword then it must be imported...

Uncaught TypeError: Super expression must either be null ...

After making production build i am getting this error in console and application is not getting loaded. My Environment: OS: Linux/Ubuntu ...

wavesurfer.js resize doesn't stops playback

__esModule)return e;var t={};if(null!=e)for(var n in e)Object.prototype. ... new TypeError("Super expression must either be null or a function, not "+typeof ...

React Errors : Super expression must either be null or a ...

Upgrade React. React has only supported ES6-style classes since version 0.13.0 (see their official blog post on the support introduction here.