Suggested steps for Brotli compression do not work

[mrpmorris]

The #compression section of the page says to use decode.min.js from here https://github.com/google/brotli/tree/master/js

But when I follow those steps I see the following error

	Uncaught (in promise) TypeError: BrotliDecode is not a function

On the following line in index.html

	const decompressedResponseArray = BrotliDecode(originalResponseArray);

Using decode.js instead works fine.

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• ID: be59faf1-5a20-b7e9-19ff-06589023bb15
• Version Independent ID: 250e7458-3c1d-0117-261d-c03ac136f16a
• Content: Host and deploy ASP.NET Core Blazor WebAssembly
• Content Source: aspnetcore/blazor/host-and-deploy/webassembly.md
• Product: aspnet-core
• Technology: aspnetcore-blazor
• GitHub Login: @guardrex
• Microsoft Alias: riande

[guardrex]

Hello @mrpmorris ... I agree ... I can repro that.

They haven't changed the script (and the last time they did, they changed both versions simultaneously on google/brotli#749 ... April 2019). I feel that I must have tested with the unminifed version, felt good about it, and then just blindly assumed the minified version would work on #19335. I think (guessing) that @captainsafia felt the same.

However if you go all the way back to @pranavkm's original content for this where the minified version was used, the name of the file was different ...

851a357#diff-9d063de26462c89fb0345a4954096907R41

... which implies that your, @pranavkm, own compression of the script was in use (June 2020). Google's compressed version was there, but you didn't use it.

It's easy enough to just change the script and add a NOTE, but I think we'll need to ask @pranavkm and @captainsafia about possibly moving this to the product unit repo for further investigation/resolution. Even if we change the script and add a NOTE that says 'use the unminified version,' some devs will read past the NOTE (i.e., not even see it) and some will ignore it and try to use the minified version anyway. It would be nice to get to the bottom of this and have the example startup code work with both the unminified and minified versions of the Google scripts.

[mrpmorris]

It's a bug in the BrotliDecode lib.

google/brotli#844 (comment)

[guardrex]

Thanks @mrpmorris ... I'll keep an 👁️ on the resolution there.

[captainsafia]

I think (guessing) that @captainsafia felt the same.

Yep, didn't assume there would be an issue with that change.

but I think we'll need to ask @pranavkm and @captainsafia about possibly moving this to the product unit repo for further investigation/resolution.

Considering the release timeline, there's nothing we can do in the product to address this.

Regardless, the issue seems to be in the BrotliJS library itself. Unfortunately, it doesn't look like Google provides older versions of this package. Perhaps we can point users to the npm package instead. Also, there's a chance someone might respond to @mrpmorris's thread above with a fix.