okcontract / cells / 9240715259

import type { AnyCell, MapCell } from "./cell";

import type { SheetProxy } from "./proxy";

export const initialValue = <T>(

  proxy: SheetProxy,

  v0: T | AnyCell<T>,

  v: AnyCell<T>,

  name = "initial"

): MapCell<T, true> => {

  const cell = proxy.new(v0, name);

  v.subscribe((v) => {

    // We do not propagate errors yet.

    if (v instanceof Error) return;

    cell.set(v);

  });

  // We fake being a MapCell to prevent setting the cell

  // outside of this function.

  return cell as unknown as MapCell<T, true>;

};