What versions & operating system are you using?
Wrangler 4.22.0
Please provide a link to a minimal reproduction
No response
Describe the Bug
When trying to deploy to cloudflare with wrangler deploy we get the error
Unable to determine module type for application/source-map mime type
If we set --upload-source-maps=false then it goes away
Please provide any relevant error logs
--- 2025-07-02T07:46:56.554Z debug
Error: Unable to determine module type for application/source-map mime type
at getModuleType (****node_modules/wrangler/wrangler-dist/cli.js:152060:13)
at ****node_modules/wrangler/wrangler-dist/cli.js:152072:13
at Array.map (<anonymous>)
at convertWorkerBundleToModules (****node_modules/wrangler/wrangler-dist/cli.js:152071:33)
at analyseBundle (****node_modules/wrangler/wrangler-dist/cli.js:152123:16)
at handleStartupError (****node_modules/wrangler/wrangler-dist/cli.js:152244:28)
at helpIfErrorIsSizeOrScriptStartup (****node_modules/wrangler/wrangler-dist/cli.js:152263:11)
at deploy (****node_modules/wrangler/wrangler-dist/cli.js:152825:15)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
at async Object.handler (****node_modules/wrangler/wrangler-dist/cli.js:80948:66)
What versions & operating system are you using?
Wrangler 4.22.0
Please provide a link to a minimal reproduction
No response
Describe the Bug
When trying to deploy to cloudflare with wrangler deploy we get the error
If we set --upload-source-maps=false then it goes away
Please provide any relevant error logs