import * as __ctHelpers from "commontools"; import { ifElse, recipe, UI } from "commontools"; interface State { matrix: number[][]; row: number; col: number; items: string[]; arr: number[]; a: number; b: number; indices: number[]; nested: { arrays: string[][]; index: number; }; users: Array<{ name: string; scores: number[]; }>; selectedUser: number; selectedScore: number; } export default recipe({ type: "object", properties: { matrix: { type: "array", items: { type: "array", items: { type: "number" } } }, row: { type: "number" }, col: { type: "number" }, items: { type: "array", items: { type: "string" } }, arr: { type: "array", items: { type: "number" } }, a: { type: "number" }, b: { type: "number" }, indices: { type: "array", items: { type: "number" } }, nested: { type: "object", properties: { arrays: { type: "array", items: { type: "array", items: { type: "string" } } }, index: { type: "number" } }, required: ["arrays", "index"] }, users: { type: "array", items: { type: "object", properties: { name: { type: "string" }, scores: { type: "array", items: { type: "number" } } }, required: ["name", "scores"] } }, selectedUser: { type: "number" }, selectedScore: { type: "number" } }, required: ["matrix", "row", "col", "items", "arr", "a", "b", "indices", "nested", "users", "selectedUser", "selectedScore"] } as const satisfies __ctHelpers.JSONSchema, { type: "object", properties: { $UI: { $ref: "#/$defs/Element" } }, required: ["$UI"], $defs: { Element: { type: "object", properties: { type: { type: "string", "enum": ["vnode"] }, name: { type: "string" }, props: { $ref: "#/$defs/Props" }, children: { $ref: "#/$defs/RenderNode" }, $UI: { $ref: "#/$defs/VNode" } }, required: ["type", "name", "props"] }, VNode: { type: "object", properties: { type: { type: "string", "enum": ["vnode"] }, name: { type: "string" }, props: { $ref: "#/$defs/Props" }, children: { $ref: "#/$defs/RenderNode" }, $UI: { $ref: "#/$defs/VNode" } }, required: ["type", "name", "props"] }, RenderNode: { anyOf: [{ type: "string" }, { type: "number" }, { type: "boolean", "enum": [false] }, { type: "boolean", "enum": [true] }, { $ref: "#/$defs/VNode" }, { type: "object", properties: {} }, { type: "array", items: { $ref: "#/$defs/RenderNode" } }] }, Props: { type: "object", properties: {}, additionalProperties: { anyOf: [{ type: "string" }, { type: "number" }, { type: "boolean", "enum": [false] }, { type: "boolean", "enum": [true] }, { type: "object", additionalProperties: true }, { type: "array", items: true }, { asCell: true }, { asStream: true }, { type: "null" }] } } } } as const satisfies __ctHelpers.JSONSchema, (state) => { return { [UI]: (

Nested Element Access

{/* Double indexing into matrix */}

Matrix value: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { matrix: { type: "array", items: { type: "array", items: { type: "number" } }, asOpaque: true }, row: { type: "number", asOpaque: true }, col: { type: "number", asOpaque: true } }, required: ["matrix", "row", "col"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { matrix: state.matrix, row: state.row, col: state.col } }, ({ state }) => state.matrix[state.row]![state.col])}

{/* Triple nested access */}

Deep nested: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { nested: { type: "object", properties: { arrays: { type: "array", items: { type: "array", items: { type: "string" } }, asOpaque: true }, index: { type: "number", asOpaque: true } }, required: ["arrays", "index"] }, row: { type: "number", asOpaque: true } }, required: ["nested", "row"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { nested: { arrays: state.nested.arrays, index: state.nested.index }, row: state.row } }, ({ state }) => state.nested.arrays[state.nested.index]![state.row])}

Multiple References to Same Array

{/* Same array accessed multiple times with different indices */}

First and last: {state.items[0]} and{" "} {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { items: { type: "array", items: { type: "string" }, asOpaque: true } }, required: ["items"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { items: state.items } }, ({ state }) => state.items[state.items.length - 1])}

{/* Array used in computation and access */}

Sum of ends: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true } }, required: ["arr"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number" } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr } }, ({ state }) => state.arr[0]! + state.arr[state.arr.length - 1]!)}

Computed Indices

{/* Index from multiple state values */}

Computed index: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true }, a: { type: "number", asOpaque: true }, b: { type: "number", asOpaque: true } }, required: ["arr", "a", "b"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr, a: state.a, b: state.b } }, ({ state }) => state.arr[state.a + state.b])}

{/* Index from computation involving array */}

Modulo index: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { items: { type: "array", items: { type: "string" }, asOpaque: true }, row: { type: "number", asOpaque: true } }, required: ["items", "row"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { items: state.items, row: state.row } }, ({ state }) => state.items[state.row % state.items.length])}

{/* Complex index expression */}

Complex: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true }, a: { type: "number", asOpaque: true } }, required: ["arr", "a"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr, a: state.a } }, ({ state }) => state.arr[Math.min(state.a * 2, state.arr.length - 1)])}

Chained Element Access

{/* Element access returning array, then accessing that */}

User score:{" "} {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { users: { type: "array", items: { type: "object", properties: { name: { type: "string" }, scores: { type: "array", items: { type: "number" } } }, required: ["name", "scores"] }, asOpaque: true }, selectedUser: { type: "number", asOpaque: true }, selectedScore: { type: "number", asOpaque: true } }, required: ["users", "selectedUser", "selectedScore"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { users: state.users, selectedUser: state.selectedUser, selectedScore: state.selectedScore } }, ({ state }) => state.users[state.selectedUser]!.scores[state.selectedScore])!}

{/* Using one array element as index for another */}

Indirect: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { items: { type: "array", items: { type: "string" }, asOpaque: true }, indices: { type: "array", items: { type: "number" }, asOpaque: true } }, required: ["items", "indices"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { items: state.items, indices: state.indices } }, ({ state }) => state.items[state.indices[0]!])}

{/* Array element used as index for same array */}

Self reference: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true } }, required: ["arr"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr } }, ({ state }) => state.arr[state.arr[0]!])}

Mixed Property and Element Access

{/* Property access followed by element access with computed index */}

Mixed: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { nested: { type: "object", properties: { arrays: { type: "array", items: { type: "array", items: { type: "string" } }, asOpaque: true }, index: { type: "number", asOpaque: true } }, required: ["arrays", "index"] } }, required: ["nested"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number" } as const satisfies __ctHelpers.JSONSchema, { state: { nested: { arrays: state.nested.arrays, index: state.nested.index } } }, ({ state }) => state.nested.arrays[state.nested.index]!.length)}

{/* Element access followed by property access */}

User name length: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { users: { type: "array", items: { type: "object", properties: { name: { type: "string" }, scores: { type: "array", items: { type: "number" } } }, required: ["name", "scores"] }, asOpaque: true }, selectedUser: { type: "number", asOpaque: true } }, required: ["users", "selectedUser"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number" } as const satisfies __ctHelpers.JSONSchema, { state: { users: state.users, selectedUser: state.selectedUser } }, ({ state }) => state.users[state.selectedUser]!.name.length)}

Element Access in Conditions

{/* Element access in ternary */}

Conditional:{" "} {__ctHelpers.ifElse({ type: "boolean" } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, __ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true }, a: { type: "number", asOpaque: true } }, required: ["arr", "a"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "boolean" } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr, a: state.a } }, ({ state }) => state.arr[state.a]! > 10), __ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { items: { type: "array", items: { type: "string" }, asOpaque: true }, b: { type: "number", asOpaque: true } }, required: ["items", "b"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "string", asOpaque: true } as const satisfies __ctHelpers.JSONSchema, { state: { items: state.items, b: state.b } }, ({ state }) => state.items[state.b]!), state.items[0]!)}

{/* Element access in boolean expression */}

Has value: {ifElse({ type: "boolean" } as const satisfies __ctHelpers.JSONSchema, { type: "string" } as const satisfies __ctHelpers.JSONSchema, { type: "string" } as const satisfies __ctHelpers.JSONSchema, { "enum": ["positive", "non-positive"], asOpaque: true } as const satisfies __ctHelpers.JSONSchema, __ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { matrix: { type: "array", items: { type: "array", items: { type: "number" } }, asOpaque: true }, row: { type: "number", asOpaque: true }, col: { type: "number", asOpaque: true } }, required: ["matrix", "row", "col"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "boolean" } as const satisfies __ctHelpers.JSONSchema, { state: { matrix: state.matrix, row: state.row, col: state.col } }, ({ state }) => state.matrix[state.row]![state.col]! > 0), "positive", "non-positive")}

Element Access with Operators

{/* Element access with arithmetic */}

Product: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true }, a: { type: "number", asOpaque: true }, b: { type: "number", asOpaque: true } }, required: ["arr", "a", "b"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number" } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr, a: state.a, b: state.b } }, ({ state }) => state.arr[state.a]! * state.arr[state.b]!)}

{/* Element access with string concatenation */}

Concat: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { items: { type: "array", items: { type: "string" }, asOpaque: true }, indices: { type: "array", items: { type: "number" }, asOpaque: true } }, required: ["items", "indices"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "string" } as const satisfies __ctHelpers.JSONSchema, { state: { items: state.items, indices: state.indices } }, ({ state }) => state.items[0]! + " - " + state.items[state.indices[0]!]!)}

{/* Multiple element accesses in single expression */}

Sum: {__ctHelpers.derive({ type: "object", properties: { state: { type: "object", properties: { arr: { type: "array", items: { type: "number" }, asOpaque: true } }, required: ["arr"] } }, required: ["state"] } as const satisfies __ctHelpers.JSONSchema, { type: "number" } as const satisfies __ctHelpers.JSONSchema, { state: { arr: state.arr } }, ({ state }) => state.arr[0]! + state.arr[1]! + state.arr[2]!)}

), }; }); // @ts-ignore: Internals function h(...args: any[]) { return __ctHelpers.h.apply(null, args); } // @ts-ignore: Internals h.fragment = __ctHelpers.h.fragment;