replace IE11 by edge/chromium to support ECMA6 [feature request]

[mprevot]

Installed product versions

• Visual Studio: 16.8.3 enterprise
• This extension: 1.12.253

Description

MarkdownEditor uses VS2019 integrated IE11 but IE11 does not support ECMA6 js, excluding a class of js plugins such as mermaid (mermaid-js/mermaid#303).

Using Edge/Chromium instead would be neat for features/performance/maintenance.

Chromium Embedded Framework (CEF) can be used (~ Chromium v88.0.4324.0):
https://github.com/chromiumembedded/cef

[efreykongcn]

Hi,

I've implemented this feature for my personal use (Replaced IE 11 by Microsoft Edge WebView2 instead of CEF). Now the browser supports latest mermaid (v8.13.10. Sequence diagram etc.).

I'm not sure this feature would be a common request, so I just keep it in my forked repository, UpgradeBrowserToWebView2 branch.

Anyone who may interested this feature can get it from branch link: https://github.com/efreykongcn/MarkdownEditor/tree/UpgradeBrowserToWebView2

[madskristensen]

How much bigger is the .vsix file with WebView2?

[efreykongcn]

How much bigger is the .vsix file with WebView2?

The size of current MarkdownEditor.vsix is 1.68MB, after upgraded browser from IE to WebView2 (also upgraded mermaid js to the latest), the vsix file is about 2.84MB.

[madskristensen]

A PR with this would be awesome if you're willing?

[efreykongcn]

A PR with this would be awesome if you're willing?

My pleasure.
PR created. Please review.

[ite-klass]

This was implemented in #229, merged in c9d7762.