VANILLA / ENGINE WORKBENCH

Own every Grid generation.

Create a real Grid, edit it, switch a construction-bound option, and tear it down. The adjacent instrument shows exactly which renderer, datasource, and workbook the host owns.

Adapter: Core API
Engine: Rust / WASM
Surface: Canvas

Live workbook/ Vanilla

Real adapter · interactive state

Imperative Grid laboratoryChoose the ownership boundary to inspect.

Initializing WASM and 100,000 rows…

HOST-OWNED LIFECYCLE

Generation instrument

Generation 1 · creating

Renderer: Requested: Main thread · Active: Main thread
Datasource: Dense columnar · host memory
Workbook: Revenue pipeline

3-action challengeProve the host owns the Grid.

1
Edit one value
Select B2, type a value in the formula bar, and commit it.
2
Switch its construction option
Rendering thread
Main threadWeb Worker
3
Destroy, then create

Construction & debug controls

PUBLISHED RUNTIME

See the contract working.

No mock controls or copied state. Every interaction above crosses the public adapter and Grid APIs.

01
Explicit lifecycle
createWorkbench and destroy() bound every generation — no listeners, chrome, or canvas survive teardown.
02
Construction-bound truth
Renderer and data path rebuild the grid and live in the URL; read-only flips on the running instance.
03
Host-owned paging
The page source, its latency, and its abort path are host code; allocation stats read back from the store.
04
Honest Worker fallback
A failed Worker boot emits renderer-fallback and keeps painting on the main thread — requested vs. active is always visible.