Side effects with other scripts using postmessage

[lyncee]

Hello,

I just figured out that in some points, when there is an other plugin in the page using postmessage, it has some side effects with gifjs.

I have in my page a youtube html5 player, and when gifjs is also loaded (whatever the loading order), I got this error:

Uncaught SyntaxError: Failed to execute 'postMessage' on 'Window': Invalid target origin '' in a call to 'postMessage'. GIFEncoder.js:55

I will check with some other scripts using postmessage if it does the same side effects anyway and keep you updated if I find a workaround.

Cheers guys, thank you for this awesome work.

[hero4th]

Same problem here, I tried debbuging it with chrome and found this

I really don´t know how 'postMessage' work, but the bug is from the TypedNeuQuant.js file that is called. Line 431 module.exports = NeuQuant;

Any help will appreciated.

Great work from Johan Nordberg, thank you

[keithamus]

It looks like you might be loading gif.worker.js (or gif.worker.coffee) in your HTML. It is not meant to be loaded by you - only by gif.coffee. Remove the reference to it, so that it is only loaded when a new worker is spun up.

By including gif.worker.js - which does self.onmessage, it is actually doing window.onmessage - at which point it receives all messages from all workers, and tries to render a frame from those messages - meaning any worker (that isn't a gif worker) that sends a message will cause this error to throw.

[lyncee]

Hello Keithanus !

Thank you for the trick, it did it.

My bad I feel a bit stupid. Thank you for your follow up !

[keithamus]

@lyncee no problem! You should close this issue.

[hero4th]

Same here, thank you!