mod cursor;
mod txn;
let open = |path: string| -> Result<Db, `DbErr(string)> 'db_open;
let flush = |db: Db| -> Result<null, `DbErr(string)> 'db_flush;
let generate_id = |db: Db| -> Result<u64, `DbErr(string)> 'db_generate_id;
let tree_names = |db: Db| -> Result<Array<string>, `DbErr(string)> 'db_tree_names;
let drop_tree = |db: Db, name: string| -> Result<bool, `DbErr(string)> 'db_drop_tree;
let tree = |db: Db, name: [string, null]| -> Result<Tree<'k, 'v>, `DbErr(string)> 'db_tree;
let get_type = |db: Db, name: [string, null]| -> Result<[(string, string), null], `DbErr(string)> 'db_get_type;
let get = |t: Tree<'k, 'v>, key: 'k| -> Result<['v, null], `DbErr(string)> 'db_get;
let insert = |t: Tree<'k, 'v>, key: 'k, value: 'v| -> Result<['v, null], `DbErr(string)> 'db_insert;
let remove = |t: Tree<'k, 'v>, key: 'k| -> Result<['v, null], `DbErr(string)> 'db_remove;
let contains_key = |t: Tree<'k, 'v>, key: 'k| -> Result<bool, `DbErr(string)> 'db_contains_key;
let get_many = |t: Tree<'k, 'v>, keys: Array<'k>| -> Result<Array<['v, null]>, `DbErr(string)> 'db_get_many;
let first = |t: Tree<'k, 'v>| -> Result<[('k, 'v), null], `DbErr(string)> 'db_first;
let last = |t: Tree<'k, 'v>| -> Result<[('k, 'v), null], `DbErr(string)> 'db_last;
let pop_min = |t: Tree<'k, 'v>| -> Result<[('k, 'v), null], `DbErr(string)> 'db_pop_min;
let pop_max = |t: Tree<'k, 'v>| -> Result<[('k, 'v), null], `DbErr(string)> 'db_pop_max;
let get_lt = |t: Tree<'k, 'v>, key: 'k| -> Result<[('k, 'v), null], `DbErr(string)> 'db_get_lt;
let get_gt = |t: Tree<'k, 'v>, key: 'k| -> Result<[('k, 'v), null], `DbErr(string)> 'db_get_gt;
let compare_and_swap = |t: Tree<'k, 'v>, key: 'k, old: ['v, null], new: ['v, null]| -> Result<[null, `Mismatch(['v, null])], `DbErr(string)> 'db_compare_and_swap;
let batch = |t: Tree<'k, 'v>, ops: Array<[`Insert('k, 'v), `Remove('k)]>| -> Result<null, `DbErr(string)> 'db_batch;
let len = |t: Tree<'k, 'v>| -> Result<u64, `DbErr(string)> 'db_len;
let is_empty = |t: Tree<'k, 'v>| -> Result<bool, `DbErr(string)> 'db_is_empty;
let size_on_disk = |db: Db| -> Result<u64, `DbErr(string)> 'db_size_on_disk;
let was_recovered = |db: Db| -> Result<bool, `DbErr(string)> 'db_was_recovered;
let checksum = |db: Db| -> Result<u32, `DbErr(string)> 'db_checksum;
let export = |db: Db, path: string| -> Result<null, `DbErr(string)> 'db_export;
let import = |db: Db, path: string| -> Result<null, `DbErr(string)> 'db_import;