import * as __ctHelpers from "commontools"; import { cell, pattern, UI } from "commontools"; export default pattern((_state) => { const items = cell(["apple", "banana", "cherry"], { type: "array", items: { type: "string" } } as const satisfies __ctHelpers.JSONSchema); const index = cell(1, { type: "number" } as const satisfies __ctHelpers.JSONSchema); return { [UI]: (
Selected item: {__ctHelpers.derive({ type: "object", properties: { items: { type: "array", items: { type: "string" }, asCell: true }, index: { type: "number", asCell: true } }, required: ["items", "index"] } as const satisfies __ctHelpers.JSONSchema, { type: ["string", "undefined"] } as const satisfies __ctHelpers.JSONSchema, { items: items, index: index }, ({ items, index }) => items.get()[index.get()])}