nitropage/src/lib/primitives/simplex.ts

A free and open source, extensible visual page builder based on SolidStart.

import { Accessor, untrack } from "solid-js";

/**
 * Returns an accessor that is only reactive when the value changes from false to true
 */
export const createSimplex = (fn: Accessor<boolean>, invert = false) => {
  return () => {
    const state = untrack(() => fn());
    if (state === !invert) return state;
    return fn();
  };
};