Unable to open local files in wsl

[captainjapeng]

I'm using this library from preview-email library and it fails to open the generated html file on WSL

I have found a partial solution but missing a code to differentiate between a Web URL or a filesystem path

	} else if (process.platform === 'win32' || isWsl) {

		command = 'cmd' + (isWsl ? '.exe' : '');
		cliArguments.push('/c', 'start', '""', '/b');
		target = target.replace(/&/g, '^&');

		if (options.wait) {
			cliArguments.push('/wait');
		}

		if (options.app) {
			if (isWsl && options.app.startsWith('/mnt/')) {
				const windowsPath = await wslToWindowsPath(options.app);
				options.app = windowsPath;
			}

			cliArguments.push(options.app);
		}

		// Convert local filepath to the one windows can understand
		// Needs to differentiate between web url and filepath
		if (isWsl) {
			target = await wslToWindowsPath(target);
		}

		if (appArguments.length > 0) {
			cliArguments.push(...appArguments);
		}
	} else {

[starptr]

Having a similar problem here. I suspect it is due to this line:

if (isWsl && options.app.startsWith('/mnt/')) {

I played around with wslpath (which is executed by wslToWindowsPath) and it supports non-mounted paths. For example, /home/foo gets converted into \\wsl$\Ubuntu\home\foo. Unfortunately, simply changing the line to

if (isWsl) {

doesn't seem to fix it :(.

[sindresorhus]

A lot of changes have gone into WSL support. Is this still an issue?

[matej-marcisovsky]

Yes, this is still an issue. Latest version installed, WSL2 Ubuntu 22.04 and I can not open local HTML files. Opening URL (like https://google.com) works fine.

[thebnq]

preview-email was updated to take a urlTransformer. This fixes it for me:

urlTransform: (path: string) => `file://\\\\wsl.localhost/${process.env.WSL_DISTRO_NAME}${path}`

[romanlex]

What about this issue?
When run command from js api we get output

I think is wrong for wsl2 for example because it is Linux
when I'm try to run command with npx open I get run with linux binary xdg-open and all work perfectly

If I edit code https://github.com/sindresorhus/open/blob/main/index.js#L150 to
if (platform === 'darwin' || isWsl) {
all work perfectly