Investigate Edge bug

[guybedford]

Posting to track Aurelia's critical bug in Edge. Apparently this can be replicated via the docs site at http://aurelia.io/docs.html#/aurelia/framework/latest/doc/article/what-is-aurelia with devtools closed showing incorrect loading behaviour.

[guybedford]

This is resolved by the implementation of #1070.

The work around is to include <script src="url-polyfill.js"></script> before SystemJS where the file for url-polyfill.js is from https://github.com/ModuleLoader/es6-module-loader/blob/master/src/url-polyfill.js.

[DavidRogers]

Hi guy, I just tried the workaround you described and it made no difference in Edge... I used the exact polyfill you referenced. I have an Aurelia app using JSPM (which I love btw!)
Am I missing something?

[guybedford]

@DavidRogers that needs to be included as well as the Promise polyfill before SystemJS.

[guybedford]

Released in 0.19.25.

[DavidRogers]

I forgot to mention that I did have the bluebird Promise polyfill included as well. (And they are both included before SystemJS).

[guybedford]

Can you investigate where in the pipeline it is not working? For example, is the bundle being executed? Does it work with devtools open? Are there errors being thrown Etc etc. There are many possible compatibility issues.

[DavidRogers]

It is the same aurelia issue (aurelia/framework#227) that is referenced in this issue.The nature of this bug makes it very difficult to debug since everything works fine with devtools open. The referenced issue has a lot of good info in it that is better than what I could provide you.

[michaelmalonenz]

@DavidRogers @guybedford I experienced the same issue, but after removing Bluebird promises, it starts up as expected - even with decent performance (which is what Bluebird was addressing), so it's some sort of interaction there. I am using jspm v0.16.32 and systemjs v0.19.25

[DavidRogers]

I can confirm that removing bluebird as @michaelmalonenz suggests does fix the issue.

[DerAlbertCom]

i can not confirm this. with or without bluebird, if you use .globalResources() in the configuration of aurelia it the application does not startup.

[SamDeBlock]

Probably related to bug in Edge, see:
aurelia/framework#227 (comment)
and chakra-core/ChakraCore#1415

[sberney]

I agree with @SamDeBlock . We have been experiencing this issue too. I don't think SystemJS is at fault, but it does seem to provoke the bug. Not that it adds much information, but I just summarized this.

You might consider adding a check on this line along the lines of

if (typeof meta === 'function')
  meta = meta();

Which makes logical sense, but is not something I have tested, and given the suspected nature of this as a bug with Edge, it may not result in proper behavior either.

Edit and rehash: I suspect all the "resolutions" are patternicity.

One more edit: @guybedford You might consider adding this polyfill.