const sqlite3_index_constraint_layout: {
  members: {
    iColumn: {
      offset: 0;
      signature: "i";
    };
    iTermOffset: {
      offset: 8;
      signature: "i";
    };
    op: {
      offset: 4;
      signature: "C";
    };
    usable: {
      offset: 5;
      signature: "C";
    };
  };
  sizeof: 12;
};