Nested record with @as attribute

[nojaf]

type location = {
  @as("location_area") 
  locationArea: {
    name: string,
    url: string,
  }
}

is not valid syntax somehow.

https://rescript-lang.org/try?version=v12.0.0-beta.4&module=esmodule&code=C4TwDgpgBANg9gYwIbAJZwHZQLxQN4BQUUAAkgM4AUARPMmpgPpIBOES1AlFEbIiugwBBNkgBc+XsQxIAthAnlgLVBgDmAGilQArixiLlqzbwC+BU0A