Choose an engine

Compare the builds

Both builds use the same Rust calculation engine, storage model, and resource limits. The full build adds statistics, distributions, regression, finance, regex, database, matrix, and reshaping functions. Check the function catalog for the build that provides each function. Compare download sizes in the engine measurements.

Keep the default

import { initSheetwrite } from "@sheetwrite/core";

await initSheetwrite();

Framework adapters make this call on mount. No explicit engine selection is needed for the default build.

Select the full engine

$ npm install @sheetwrite/core @sheetwrite/formulas

import { initSheetwrite } from "@sheetwrite/core";
import * as formulas from "@sheetwrite/formulas";

await initSheetwrite(undefined, formulas);

Run this before creating any grid or store and before mounting a framework adapter. Later zero-argument calls keep the selected engine. Importing the package alone does not select it.

Selection rules

• An app uses one engine. Once initialization starts, selecting another engine rejects.
• The default build returns #NAME? for full-only functions and does not suggest them in formula assist. Their source remains in the document.
• Repeated initialization with the selected engine is safe. Concurrent calls share initialization; a failed initialization can be retried.
• Renderer choice is separate. Both builds work with canvas painting or worker rendering.

See also

• Installation for explicit WASM sources and framework setup.
• Calculation engine for recalculation, spills, and limits.
• Analysis formulas for full-engine examples.