Fix path on Windows

[compulim]

Fixes #4102.

Changelog Entry

Description

cldr-data-downloader we forked and ported to ESM earlier in PR #3998 wasn't working on Windows.

Under Node.js, there are two file path scheme:

• CJS use OS native file path (e.g. C:\Users\...);
• ESM requires URL-based file path (e.g. file:///C:/Users/...).

We mixed them up in the port. It was broken-but-working on Linux because we are using the path as a relative. However, under Windows, it exposed the issue.

Design

We prefer OS native file path when passing the path externally, say, from cldr-data package to cldr-data-downloader package.

Internally, it depends. Because mkdir and other fs functions prefer OS native file path.

There is an utility function named isUrl. It is supposed to check if the path is a URL or OS native file path. However, it consider C:\Users\... is a URL, instead of OS native file path. We fixed it.

In the future, we should consider adding a PR validation pipeline that runs on Windows, in addition to Linux.

Specific Changes

• Updated index.js and util.js in cldr-data-downloader to handle file path correctly

• I have added tests and executed them locally
• I have updated CHANGELOG.md
• I have updated documentation

Review Checklist

This section is for contributors to review your work.

• Accessibility reviewed (tab order, content readability, alt text, color contrast)
• Browser and platform compatibilities reviewed
• CSS styles reviewed (minimal rules, no z-index)
• Documents reviewed (docs, samples, live demo)
• Internationalization reviewed (strings, unit formatting)
• package.json and package-lock.json reviewed
• Security reviewed (no data URIs, check for nonce leak)
• Tests reviewed (coverage, legitimacy)