protected virtual override OutStream doWriteInclude(OutStream out, Str module, Str path)

virtual const override Str ext := "js"

new make(File nodeDir)

virtual const override File moduleDir := this.nodeDir.plus(`esm/`)

virtual const override Str moduleType := "esm"

virtual override OutStream writeExports(OutStream out, Str[] exports)

virtual override Void writePackageJson(Str:Obj? json)