Convert a regex to a glob pattern

How it works

Regex wildcards map to glob stars and question marks where semantics align; escaped literals remain literal. Alternation, lookarounds, and other non-glob constructs are flagged instead of silently broadened.

• Glob syntax is simpler than regex.
• Conservative conversion avoids matching more files than intended.

Worked example

											^.*\.js$
										

												**.js
											

When to use this

Gitignore rules, build includes, and file-picker filters convert patterns.

Edge cases

• Alternation such as (js|ts) has no single portable glob.
• Regex anchors have no filename wildcard equivalent.
• Whether * crosses directories depends on the glob matcher.