Importing vs fetching JSON

JSON module imports are now baseline across browsers, but they have important behavioral differences from fetch(). Module imports cache data for the page lifetime and can cause memory leaks with dynamic data or large objects, while fetch() allows garbage collection. Error handling with fetch() also provides better introspection through response status and text fallbacks. JSON imports work best for local static resources that bundlers can optimize, but fetch() remains the better choice for API calls and dynamic data.