sqlite.js

Another SQLite wrapper library.

Features:

• Incremental Blob IO via Readable / Writable Streams
• Custom VFSs with async implementations
• Coroutines / "multithreading" via Asyncify stack switching.
  • Enables cancelling a query: Conn.prototype.interrupt()
  • Run multiple queries without needing SharedArrayBuffer or Worker
  • This library compiles SQLite with multithreading support
• An API with minimal construction / destruction. Prefers 'borrowing' APIs that automatically aquire and release resources.
  • ConnPool.prototype.borrow()
  • Once webbrowsers get disaposable/asyncdisposable, then I might rework the APIs to better reflect the underlying SQLite objects.
• Tagged template literals
• Everything is optional: only include what you need.
  • Custom VFSs are optional (if you just want in-memory)
  • Custom scalar-functions are optional (if you don't need incremental blob IO, etc.)
  • Pool is optional
• Extensible
  • Modify how values are bound via the Bindable and Resultable traits in sql.mjs/value.js
  • Write your own implementation of custom VFS support. Look at sql.mjs/vfs/custom.js to learn how.
  • Directly call sqlite3 functions via sql.mjs/sqlite.js and sql.mjs/sqlite_def.js
• Two VFS implementations
  • An HTTP VFS that uses HTTP range queries (if supported by the server) to incrementally query a database
    • Read-only
    • Works in browsers or Deno (uses the fetch api)
  • A browser VFS that operates on FileSystemFileHandle's and FileSystemDirectoryHandle's
    • Uses a virtual filesystem composed of file handles stored in an indexedDB database