Fails when running in Visual Studio Code and maybe other Electron environments

[enrikb]

I'm using unxhr via asciidoctor-kroki and asciidoctor-vscode.
I noticed that XMLHttpRequest does not work in this environment, because the synchronous implementation based on re-executing the running process will fail. It assumes to call node with a helper script as argument.
I'm new to both Electron and Visual Studio Code extensions, but as it seems, you should set the environment variable

ELECTRON_RUN_AS_NODE=1

to make it work with Electron and, in addition, the command line option

--ms-enable-electron-run-as-node

to make Visual Studio Code actually obey above environment variable.

I succesfully verified this within Visual Studio Code using the following patch:

diff -ruN lib/XMLHttpRequest.js ../asciidoctor-vscode/node_modules/asciidoctor-kroki/node_modules/unxhr/lib/XMLHttpRequest.js
--- lib/XMLHttpRequest.js       2023-01-02 15:10:07.171592430 +0100
+++ ../asciidoctor-vscode/node_modules/asciidoctor-kroki/node_modules/unxhr/lib/XMLHttpRequest.js       2023-01-02 15:34:17.592216815 +0100
@@ -520,7 +520,8 @@
       const output = require('child_process').execSync(`"${process.execPath}" "${scriptPath}" \
 --ssl="${ssl}" \
 --encoding="${encoding}" \
---request-options=${JSON.stringify(JSON.stringify(options))}`, { stdio: ['pipe', 'pipe', 'pipe'], input: data, maxBuffer: maxBuffer })
+--request-options=${JSON.stringify(JSON.stringify(options))} \
+--ms-enable-electron-run-as-node`, { stdio: ['pipe', 'pipe', 'pipe'], input: data, maxBuffer: maxBuffer, env: { ELECTRON_RUN_AS_NODE:1 }})
       const result = JSON.parse(output.toString('utf8'))
       if (result.error) {
         throw translateError(result.error, url)

However, I'm not sure if these changes need to be added conditionally and what the conditions would be or how they could be tested.

Cheers,
Enrik