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v0.14.0
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@raykyri raykyri released this 18 Apr 19:41
v0.14.0
4ef42c3

The main application API has stabilized now. APIs relating to topics and application upgrades (e.g. migrations, snapshots, contract hashing) are still subject to change.

Breaking Changes

  • Signer package names have changed from e.g. @canvas-js/chain-ethereum to @canvas-js/signer-ethereum.
  • Action signatures have changed from function(db, ...args) {} to function(...args) {}. To access db: ModelAPI, use this.db instead. We expect to release a wrapper for developers who prefer to use arrow functions to define their applications within the next few weeks.
  • SIWESigner classes are now initialized with a random signer if you provide { burner: true } as the configuration. Otherwise, they must be initialized with a { signer: ethers.Wallet } value. If neither burner nor signer is provided, they will initialize in read-only mode.

New Features, Improvements, Other Changes

  • Applications can now be initialized with snapshots of past data. Snapshots are automatically prepended at the start of a log, and applications that use snapshots must include a hash of the snapshot in their topic, e.g. forum-example.canvas.xyz#ffae63ab95cc5483.
  • Added transactions with serializable isolation.
  • Added Sign in with Farcaster, for browser logins and miniapp frame logins.
  • Added support for providing TypeScript contracts to the runtime, which are compiled using esbuild-wasm.
  • Ability to live-edit and live-update applications from the network explorer, to switch in a new running contract.
  • Improved type derivation for useLiveQuery() and useCanvas().
  • Messages and actions are now encoded in CBOR, and performance has been significantly increased for large databases. This is an automatic upgrade (large applications may take a longer time to start while the automatic migration runs).
  • Added internal upgrade functionality to the database. Upgrades run when an application starts, and are resumable if interrupted.
  • Fixes some crashes on application shutdown.
  • Removed branch tracking and custom merge functions, for performance reasons.
  • Removed db.link().
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