Invalid loader: "mts"

[loynoir]

Reproduce

https://github.com/loynoir/reproduce-esbuild-node-loader-24.mts

Actual

$ node --loader esbuild-node-loader index.mts
Error: Invalid loader: "mts" (valid: js, jsx, ts, tsx, css, json, text, base64, dataurl, file, binary)

Expected

No error

$ node --loader esbuild-node-loader index.mts
42