Polyfills for Blazor for Internet Explorer 11 support and some fix for some other browsers, like buggy Safari with WebAssembly
This are the required polyfills in order to launch Blazor from Internet Explorer 11, maybe some other unsupported browsers too.
Please note that this project is only for compatibility conveniences and no one knows if Blazor will still work even with theses polyfills in the future. There is also no guarantee about full Blazor support.
This project is using core-js and fetch polyfills, with some tweak at startup for Internet Explorer 11, and detecting buggy WebAssembly on Webkit, including Chrome and Safari.
Falling back on asmjs for theses buggy Webkit version.
The easiest way to install is to download the latest release and include the blazor.polyfill.js or blazor.polyfill.min.js file before the blazor-boot script tag in your wwwroot\index.html file like:
<script type="text/javascript" src="blazor.polyfill.min.js"></script>
<script type="blazor-boot">
</script>That's all !
Not directly related to Blazor.Polyfill, but depending your environment (IIS, IIS Express, Kestrel etC.) you may encounter this kind of error in the browser console at Blazor startup:
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (mono.js.mem, line 0)
This is surely related to a missing mime-type in your web configuration. If you are using IIS hosting (or similar) edit your web.config file and at this node level:
<configuration>
<system.webServer>
<staticContent>add a child node like:
<mimeMap fileExtension=".mem" mimeType="application/octet-stream" /> This project is not affiliated with the Blazor project.