function pageLocation(loc) {
  return {
    offset: loc.field_1,
    compressed_page_size: loc.field_2,
    first_row_index: loc.field_3,
  }
}
@import {ColumnIndex, DataReader, OffsetIndex, PageLocation, ParquetParsers, SchemaElement} from '../src/types.d.ts'
@param {any} loc
@returns {PageLocation}