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tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(45,7): error TS2322: Type 'number' is not assignable to type 'Box2'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(60,7): error TS2322: Type 'number' is not assignable to type 'string | RecArray<string>'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(66,8): error TS2322: Type 'number' is not assignable to type 'string | string[]'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(72,8): error TS2322: Type 'number' is not assignable to type 'string | (string | string[])[]'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(102,10): error TS2304: Cannot find name 'html'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(104,12): error TS2304: Cannot find name 'html'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(105,7): error TS2304: Cannot find name 'html'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(106,52): error TS2304: Cannot find name 'frag'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(116,11): error TS2304: Cannot find name 'concat'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(116,24): error TS2304: Cannot find name 'concat'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(117,11): error TS2304: Cannot find name 'concat'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(122,11): error TS2304: Cannot find name 'concat'.
tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts(127,3): error TS2304: Cannot find name 'assert'.
==== tests/cases/conformance/types/typeRelationships/recursiveTypes/recursiveTypeReferences1.ts (13 errors) ====
type ValueOrArray<T> = T | Array<ValueOrArray<T>>;
const a0: ValueOrArray<number> = 1;
const a1: ValueOrArray<number> = [1, [2, 3], [4, [5, [6, 7]]]];
type HypertextNode = string | [string, { [key: string]: unknown }, ...HypertextNode[]];
const hypertextNode: HypertextNode =
["div", { id: "parent" },
["div", { id: "first-child" }, "I'm the first child"],
["div", { id: "second-child" }, "I'm the second child"]
];
type Json = string | number | boolean | null | Json[] | { [key: string]: Json };
let data: Json = {
caption: "Test",
location: { x: 10, y: 20 },
values: [true, [10, 20], null]
};
interface Box<T> { value: T };
type T1 = Box<T1>;
type T2 = Box<Box<T2>>;
type T3 = Box<Box<Box<T3>>>;
function f1(t1: T1, t2: T2, t3: T3) {
t1 = t2;
t1 = t3;
t2 = t1;
t2 = t3;
t3 = t1;
t3 = t2;
}
type Box1 = Box<Box1> | number;
const b10: Box1 = 42;
const b11: Box1 = { value: 42 };
const b12: Box1 = { value: { value: { value: 42 }}};
type Box2 = Box<Box2 | number>;
const b20: Box2 = 42; // Error
~~~
!!! error TS2322: Type 'number' is not assignable to type 'Box2'.
const b21: Box2 = { value: 42 };
const b22: Box2 = { value: { value: { value: 42 }}};
type RecArray<T> = Array<T | RecArray<T>>;
declare function flat<T>(a: RecArray<T>): Array<T>;
declare function flat1<T>(a: Array<T | Array<T>>): Array<T>
declare function flat2<T>(a: Array<T | Array<T | Array<T>>>): Array<T>;
flat([1, [2, [3]]]); // number[]
flat([[[0]]]); // number[]
flat([[[[[[[[[[[4]]]]]]]]]]]); // number[]
flat([1, 'a', [2]]); // (string | number)[]
flat([1, [2, 'a']]); // (string | number)[]
flat([1, ['a']]); // Error
~
!!! error TS2322: Type 'number' is not assignable to type 'string | RecArray<string>'.
flat1([1, [2, [3]]]); // (number | number[])[]
flat1([[[0]]]); // number[][]
flat1([1, 'a', [2]]); // (string | number)[]
flat1([1, [2, 'a']]); // (string | number)[]
flat1([1, ['a']]); // Error
~
!!! error TS2322: Type 'number' is not assignable to type 'string | string[]'.
flat2([1, [2, [3]]]); // number[]
flat2([[[0]]]); // number[]
flat2([1, 'a', [2]]); // (string | number)[]
flat2([1, [2, 'a']]); // (string | number)[]
flat2([1, ['a']]); // Error
~
!!! error TS2322: Type 'number' is not assignable to type 'string | (string | string[])[]'.
type T10 = T10[];
type T11 = readonly T11[];
type T12 = (T12)[];
type T13 = T13[] | string;
type T14 = T14[] & { x: string };
type T15<X> = X extends string ? T15<X>[] : never;
type ValueOrArray1<T> = T | ValueOrArray1<T>[];
type ValueOrArray2<T> = T | ValueOrArray2<T>[];
declare function foo1<T>(a: ValueOrArray1<T>): T;
declare let ra1: ValueOrArray2<string>;
let x1 = foo1(ra1); // Boom!
type NumberOrArray1<T> = T | ValueOrArray1<T>[];
type NumberOrArray2<T> = T | ValueOrArray2<T>[];
declare function foo2<T>(a: ValueOrArray1<T>): T;
declare let ra2: ValueOrArray2<string>;
let x2 = foo2(ra2); // Boom!
// Repro from #33617 (errors are expected)
type Tree = [HTMLHeadingElement, Tree][];
function parse(node: Tree, index: number[] = []): HTMLUListElement {
return html('ul', node.map(([el, children], i) => {
~~~~
!!! error TS2304: Cannot find name 'html'.
const idx = [...index, i + 1];
return html('li', [
~~~~
!!! error TS2304: Cannot find name 'html'.
html('a', { href: `#${el.id}`, rel: 'noopener', 'data-index': idx.join('.') }, el.textContent!),
~~~~
!!! error TS2304: Cannot find name 'html'.
children.length > 0 ? parse(children, idx) : frag()
~~~~
!!! error TS2304: Cannot find name 'frag'.
]);
}));
}
function cons(hs: HTMLHeadingElement[]): Tree {
return hs
.reduce<HTMLHeadingElement[][]>((hss, h) => {
const hs = hss.pop()!;
return hs.length === 0 || level(h) > level(hs[0])
? concat(hss, [concat(hs, [h])])
~~~~~~
!!! error TS2304: Cannot find name 'concat'.
~~~~~~
!!! error TS2304: Cannot find name 'concat'.
: concat(hss, [hs, [h]]);
~~~~~~
!!! error TS2304: Cannot find name 'concat'.
}, [[]])
.reduce<Tree>((node, hs) =>
hs.length === 0
? node
: concat<Tree[number]>(node, [[hs.shift()!, cons(hs)]])
~~~~~~
!!! error TS2304: Cannot find name 'concat'.
, []);
}
function level(h: HTMLHeadingElement): number {
assert(isFinite(+h.tagName[1]));
~~~~~~
!!! error TS2304: Cannot find name 'assert'.
return +h.tagName[1];
}
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