getMappingsJson :: String -> [Mapping] -> Value
getMappingsJson name mappings =
  SourceMap.generate SourceMapping
    { smFile = name ++ ".js"
    , smSourceRoot = Nothing
    , smMappings = mappings
    }
getMappingsJson :: String -> [Mapping] -> Value
getMappingsJson name mappings =
  SourceMap.generate SourceMapping
    { smFile = name ++ ".js"
    , smSourceRoot = Nothing
    , smMappings = mappings
    }
getMappingsJson name mappings =
  SourceMap.generate SourceMapping
    { smFile = name ++ ".js"
    , smSourceRoot = Nothing
    , smMappings = mappings
    }