The JSC shell's fetchModuleFromLocalFileSystem uses a \\?\ path for the module, however that seems to not work with forward slashes as directory separators, so replace the forward slashes with backslashes.
Pull request: https://github.com/WebKit/WebKit/pull/12068
Committed 262257@main (b7030754b74c): <https://commits.webkit.org/262257@main> Reviewed commits have been landed. Closing PR #12068 and removing active labels.
<rdar://problem/107347981>