repo stringlengths 7 64 | file_url stringlengths 81 338 | file_path stringlengths 5 257 | content stringlengths 0 32.8k | language stringclasses 1
value | license stringclasses 7
values | commit_sha stringlengths 40 40 | retrieved_at stringdate 2026-01-04 15:25:31 2026-01-05 01:50:38 | truncated bool 2
classes |
|---|---|---|---|---|---|---|---|---|
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00002-medium-return-type/template.ts | questions/00002-medium-return-type/template.ts | type MyReturnType<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/03243-medium-flattendepth/test-cases.ts | questions/03243-medium-flattendepth/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<FlattenDepth<[]>, []>>,
Expect<Equal<FlattenDepth<[1, 2, 3, 4]>, [1, 2, 3, 4]>>,
Expect<Equal<FlattenDepth<[1, [2]]>, [1, 2]>>,
Expect<Equal<FlattenDepth<[1, 2, [3, 4], [[[5]]]], 2>, [1, 2, 3, 4, [5]]>>,
Expect<Equal<Flat... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/03243-medium-flattendepth/template.ts | questions/03243-medium-flattendepth/template.ts | type FlattenDepth = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/21106-medium-zu-he-jian-lei-xing-combination-key-type/test-cases.ts | questions/21106-medium-zu-he-jian-lei-xing-combination-key-type/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type ModifierKeys = ['cmd', 'ctrl', 'opt', 'fn']
type CaseTypeOne = 'cmd ctrl' | 'cmd opt' | 'cmd fn' | 'ctrl opt' | 'ctrl fn' | 'opt fn'
type cases = [
Expect<Equal<Combs<ModifierKeys>, CaseTypeOne>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/21106-medium-zu-he-jian-lei-xing-combination-key-type/template.ts | questions/21106-medium-zu-he-jian-lei-xing-combination-key-type/template.ts | // 实现 Combs
type Combs<T extends any[]> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00741-extreme-sort/test-cases.ts | questions/00741-extreme-sort/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Sort<[]>, []>>,
Expect<Equal<Sort<[1]>, [1]>>,
Expect<Equal<Sort<[2, 1]>, [1, 2]>>,
Expect<Equal<Sort<[0, 0, 0]>, [0, 0, 0]>>,
Expect<Equal<Sort<[1, 2, 3]>, [1, 2, 3]>>,
Expect<Equal<Sort<[3, 2, 1]>, [1, 2, 3]>>,
Expe... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00741-extreme-sort/template.ts | questions/00741-extreme-sort/template.ts | type Sort = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/09286-medium-firstuniquecharindex/test-cases.ts | questions/09286-medium-firstuniquecharindex/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<FirstUniqueCharIndex<'leetcode'>, 0>>,
Expect<Equal<FirstUniqueCharIndex<'loveleetcode'>, 2>>,
Expect<Equal<FirstUniqueCharIndex<'aabb'>, -1>>,
Expect<Equal<FirstUniqueCharIndex<''>, -1>>,
Expect<Equal<FirstUniqueCharInde... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/09286-medium-firstuniquecharindex/template.ts | questions/09286-medium-firstuniquecharindex/template.ts | type FirstUniqueCharIndex<T extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00462-extreme-currying-2/test-cases.ts | questions/00462-extreme-currying-2/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
const curried1 = DynamicParamsCurrying((a: string, b: number, c: boolean) => true)
const curried2 = DynamicParamsCurrying((a: string, b: number, c: boolean, d: boolean, e: boolean, f: string, g: boolean) => true)
const curried1Return1 = curried1('123')(123)(... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00462-extreme-currying-2/template.ts | questions/00462-extreme-currying-2/template.ts | declare function DynamicParamsCurrying(fn: any): any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00734-extreme-inclusive-range/test-cases.ts | questions/00734-extreme-inclusive-range/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<InclusiveRange<200, 1>, []>>,
Expect<Equal<InclusiveRange<10, 5>, []>>,
Expect<Equal<InclusiveRange<5, 5>, [5]>>,
Expect<Equal<InclusiveRange<0, 10>, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]>>,
Expect<Equal<InclusiveRange<1, 20... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00734-extreme-inclusive-range/template.ts | questions/00734-extreme-inclusive-range/template.ts | type InclusiveRange<Lower extends number, Higher extends number> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00651-hard-length-of-string-2/test-cases.ts | questions/00651-hard-length-of-string-2/test-cases.ts | import type { Equal, IsTrue } from '@type-challenges/utils'
type cases = [
IsTrue<Equal<LengthOfString<''>, 0>>,
IsTrue<Equal<LengthOfString<'1'>, 1>>,
IsTrue<Equal<LengthOfString<'12'>, 2>>,
IsTrue<Equal<LengthOfString<'123'>, 3>>,
IsTrue<Equal<LengthOfString<'1234'>, 4>>,
IsTrue<Equal<LengthOfString<'123... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00651-hard-length-of-string-2/template.ts | questions/00651-hard-length-of-string-2/template.ts | type LengthOfString<S extends string> = number
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00007-easy-readonly/test-cases.ts | questions/00007-easy-readonly/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<MyReadonly<Todo1>, Readonly<Todo1>>>,
]
interface Todo1 {
title: string
description: string
completed: boolean
meta: {
author: string
}
}
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00007-easy-readonly/template.ts | questions/00007-easy-readonly/template.ts | type MyReadonly<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/13580-hard-replace-union/test-cases.ts | questions/13580-hard-replace-union/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
// string -> null
Expect<Equal<UnionReplace<number | string, [[string, null]]>, number | null>>,
// string -> null
Expect<Equal<UnionReplace<number | string, [[string, null], [Date, Function]]>, number | null>>,
// Date -> string; F... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/13580-hard-replace-union/template.ts | questions/13580-hard-replace-union/template.ts | type UnionReplace<T, U extends [any, any][]> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/03188-medium-tuple-to-nested-object/test-cases.ts | questions/03188-medium-tuple-to-nested-object/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<TupleToNestedObject<['a'], string>, { a: string }>>,
Expect<Equal<TupleToNestedObject<['a', 'b'], number>, { a: { b: number } }>>,
Expect<Equal<TupleToNestedObject<['a', 'b', 'c'], boolean>, { a: { b: { c: boolean } } }>>,
... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/03188-medium-tuple-to-nested-object/template.ts | questions/03188-medium-tuple-to-nested-object/template.ts | type TupleToNestedObject<T, U> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/25270-medium-transpose/test-cases.ts | questions/25270-medium-transpose/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Transpose<[]>, []>>,
Expect<Equal<Transpose<[[1]]>, [[1]]>>,
Expect<Equal<Transpose<[[1, 2]]>, [[1], [2]]>>,
Expect<Equal<Transpose<[[1, 2], [3, 4]]>, [[1, 3], [2, 4]]>>,
Expect<Equal<Transpose<[[1, 2, 3], [4, 5, 6]]>, [[... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/25270-medium-transpose/template.ts | questions/25270-medium-transpose/template.ts | type Transpose<M extends number[][]> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/30178-hard-unique-items/test-cases.ts | questions/30178-hard-unique-items/test-cases.ts | import type { Equal } from '@type-challenges/utils'
declare const readonlyEqual: <A>() => <T>(value: T) => Equal<Readonly<A>, Readonly<T>>
declare const expect: (value: true) => void
// Should work
expect(readonlyEqual<[1, 2, 3]>()(uniqueItems([1, 2, 3])))
expect(readonlyEqual<['a', 'b', 'c']>()(uniqueItems(['a', 'b'... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/30178-hard-unique-items/template.ts | questions/30178-hard-unique-items/template.ts | function uniqueItems(items: any[]) {
return items
}
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/05310-medium-join/test-cases.ts | questions/05310-medium-join/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Join<['a', 'p', 'p', 'l', 'e'], '-'>, 'a-p-p-l-e'>>,
Expect<Equal<Join<['Hello', 'World'], ' '>, 'Hello World'>>,
Expect<Equal<Join<['2', '2', '2'], 1>, '21212'>>,
Expect<Equal<Join<['o'], 'u'>, 'o'>>,
Expect<Equal<Join<[... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/05310-medium-join/template.ts | questions/05310-medium-join/template.ts | type Join<T, U> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/01097-medium-isunion/test-cases.ts | questions/01097-medium-isunion/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<IsUnion<string>, false>>,
Expect<Equal<IsUnion<string | number>, true>>,
Expect<Equal<IsUnion<'a' | 'b' | 'c' | 'd'>, true>>,
Expect<Equal<IsUnion<undefined | null | void | ''>, true>>,
Expect<Equal<IsUnion<{ a: string } ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/01097-medium-isunion/template.ts | questions/01097-medium-isunion/template.ts | type IsUnion<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00057-hard-get-required/test-cases.ts | questions/00057-hard-get-required/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<GetRequired<{ foo: number, bar?: string }>, { foo: number }>>,
Expect<Equal<GetRequired<{ foo: undefined, bar?: undefined }>, { foo: undefined }>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00057-hard-get-required/template.ts | questions/00057-hard-get-required/template.ts | type GetRequired<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00847-hard-string-join/test-cases.ts | questions/00847-hard-string-join/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
// Edge cases
const noCharsOutput = join('-')()
const oneCharOutput = join('-')('a')
const noDelimiterOutput = join('')('a', 'b', 'c')
// Regular cases
const hyphenOutput = join('-')('a', 'b', 'c')
const hashOutput = join('#')('a', 'b', 'c')
const twoCharOut... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00847-hard-string-join/template.ts | questions/00847-hard-string-join/template.ts | declare function join(delimiter: any): (...parts: any[]) => any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00274-extreme-integers-comparator/test-cases.ts | questions/00274-extreme-integers-comparator/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Comparator<5, 5>, Comparison.Equal>>,
Expect<Equal<Comparator<5, 6>, Comparison.Lower>>,
Expect<Equal<Comparator<5, 8>, Comparison.Lower>>,
Expect<Equal<Comparator<5, 0>, Comparison.Greater>>,
Expect<Equal<Comparator<-5, ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00274-extreme-integers-comparator/template.ts | questions/00274-extreme-integers-comparator/template.ts | enum Comparison {
Greater,
Equal,
Lower,
}
type Comparator<A extends number, B extends number> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/07544-medium-construct-tuple/test-cases.ts | questions/07544-medium-construct-tuple/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<ConstructTuple<0>, []>>,
Expect<Equal<ConstructTuple<2>, [unknown, unknown]>>,
Expect<Equal<ConstructTuple<999>['length'], 999>>,
// @ts-expect-error
Expect<Equal<ConstructTuple<1000>['length'], 1000>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/07544-medium-construct-tuple/template.ts | questions/07544-medium-construct-tuple/template.ts | type ConstructTuple<L extends number> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/16259-medium-to-primitive/test-cases.ts | questions/16259-medium-to-primitive/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type PersonInfo = {
name: 'Tom'
age: 30
married: false
addr: {
home: '123456'
phone: '13111111111'
}
hobbies: ['sing', 'dance']
readonlyArr: readonly ['test']
fn: () => any
}
type ExpectedResult = {
name: string
age: number
marr... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/16259-medium-to-primitive/template.ts | questions/16259-medium-to-primitive/template.ts | type ToPrimitive = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00956-hard-deeppick/test-cases.ts | questions/00956-hard-deeppick/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type Obj = {
a: number
b: string
c: boolean
obj: {
d: number
e: string
f: boolean
obj2: {
g: number
h: string
i: boolean
}
}
obj3: {
j: number
k: string
l: boolean
}
}
type cases = [
Expect<Eq... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00956-hard-deeppick/template.ts | questions/00956-hard-deeppick/template.ts | type DeepPick = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/04803-medium-trim-right/test-cases.ts | questions/04803-medium-trim-right/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<TrimRight<'str'>, 'str'>>,
Expect<Equal<TrimRight<'str '>, 'str'>>,
Expect<Equal<TrimRight<'str '>, 'str'>>,
Expect<Equal<TrimRight<' str '>, ' str'>>,
Expect<Equal<TrimRight<' foo bar \n\t '>, ' foo ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/04803-medium-trim-right/template.ts | questions/04803-medium-trim-right/template.ts | type TrimRight<S extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00553-hard-deep-object-to-unique/test-cases.ts | questions/00553-hard-deep-object-to-unique/test-cases.ts | import type { Equal, IsFalse, IsTrue } from '@type-challenges/utils'
type Quz = { quz: 4 }
type Foo = { foo: 2, baz: Quz, bar: Quz }
type Bar = { foo: 2, baz: Quz, bar: Quz & { quzz?: 0 } }
type UniqQuz = DeepObjectToUniq<Quz>
type UniqFoo = DeepObjectToUniq<Foo>
type UniqBar = DeepObjectToUniq<Bar>
declare let foo... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00553-hard-deep-object-to-unique/template.ts | questions/00553-hard-deep-object-to-unique/template.ts | type DeepObjectToUniq<O extends object> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/18142-medium-all/test-cases.ts | questions/18142-medium-all/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<All<[1, 1, 1], 1>, true>>,
Expect<Equal<All<[1, 1, 2], 1>, false>>,
Expect<Equal<All<['1', '1', '1'], '1'>, true>>,
Expect<Equal<All<['1', '1', '1'], 1>, false>>,
Expect<Equal<All<[number, number, number], number>, true>>... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/18142-medium-all/template.ts | questions/18142-medium-all/template.ts | type All = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/01130-medium-replacekeys/test-cases.ts | questions/01130-medium-replacekeys/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type NodeA = {
type: 'A'
name: string
flag: number
}
type NodeB = {
type: 'B'
id: number
flag: number
}
type NodeC = {
type: 'C'
name: string
flag: number
}
type ReplacedNodeA = {
type: 'A'
name: number
flag: string
}
type Replaced... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/01130-medium-replacekeys/template.ts | questions/01130-medium-replacekeys/template.ts | type ReplaceKeys<U, T, Y> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02257-medium-minusone/test-cases.ts | questions/02257-medium-minusone/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<MinusOne<1>, 0>>,
Expect<Equal<MinusOne<55>, 54>>,
Expect<Equal<MinusOne<3>, 2>>,
Expect<Equal<MinusOne<100>, 99>>,
Expect<Equal<MinusOne<1101>, 1100>>,
Expect<Equal<MinusOne<9_007_199_254_740_992>, 9_007_199_254_740_99... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02257-medium-minusone/template.ts | questions/02257-medium-minusone/template.ts | type MinusOne<T extends number> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/05140-medium-trunc/test-cases.ts | questions/05140-medium-trunc/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Trunc<0.1>, '0'>>,
Expect<Equal<Trunc<0.2>, '0'>>,
Expect<Equal<Trunc<1.234>, '1'>>,
Expect<Equal<Trunc<12.345>, '12'>>,
Expect<Equal<Trunc<-5.1>, '-5'>>,
Expect<Equal<Trunc<'.3'>, '0'>>,
Expect<Equal<Trunc<'1.234'>, ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/05140-medium-trunc/template.ts | questions/05140-medium-trunc/template.ts | type Trunc = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00012-medium-chainable-options/test-cases.ts | questions/00012-medium-chainable-options/test-cases.ts | import type { Alike, Expect } from '@type-challenges/utils'
declare const a: Chainable
const result1 = a
.option('foo', 123)
.option('bar', { value: 'Hello World' })
.option('name', 'type-challenges')
.get()
const result2 = a
.option('name', 'another name')
// @ts-expect-error
.option('name', 'last nam... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00012-medium-chainable-options/template.ts | questions/00012-medium-chainable-options/template.ts | type Chainable = {
option(key: string, value: any): any
get(): any
}
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/05317-medium-lastindexof/test-cases.ts | questions/05317-medium-lastindexof/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<LastIndexOf<[1, 2, 3, 2, 1], 2>, 3>>,
Expect<Equal<LastIndexOf<[2, 6, 3, 8, 4, 1, 7, 3, 9], 3>, 7>>,
Expect<Equal<LastIndexOf<[0, 0, 0], 2>, -1>>,
Expect<Equal<LastIndexOf<[string, 2, number, 'a', number, 1], number>, 4>>,
... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/05317-medium-lastindexof/template.ts | questions/05317-medium-lastindexof/template.ts | type LastIndexOf<T, U> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/09384-hard-maximum/test-cases.ts | questions/09384-hard-maximum/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Maximum<[]>, never>>,
Expect<Equal<Maximum<[0, 2, 1]>, 2>>,
Expect<Equal<Maximum<[1, 20, 200, 150]>, 200>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/09384-hard-maximum/template.ts | questions/09384-hard-maximum/template.ts | type Maximum<T extends any[]> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00043-easy-exclude/test-cases.ts | questions/00043-easy-exclude/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<MyExclude<'a' | 'b' | 'c', 'a'>, 'b' | 'c'>>,
Expect<Equal<MyExclude<'a' | 'b' | 'c', 'a' | 'b'>, 'c'>>,
Expect<Equal<MyExclude<string | number | (() => void), Function>, string | number>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00043-easy-exclude/template.ts | questions/00043-easy-exclude/template.ts | type MyExclude<T, U> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/30301-medium-isodd/test-cases.ts | questions/30301-medium-isodd/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<IsOdd<5>, true>>,
Expect<Equal<IsOdd<2023>, true>>,
Expect<Equal<IsOdd<1453>, true>>,
Expect<Equal<IsOdd<1926>, false>>,
Expect<Equal<IsOdd<2.3>, false>>,
Expect<Equal<IsOdd<3e23>, false>>,
Expect<Equal<IsOdd<3e0>, tr... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/30301-medium-isodd/template.ts | questions/30301-medium-isodd/template.ts | type IsOdd<T extends number> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00545-hard-printf/test-cases.ts | questions/00545-hard-printf/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Format<'abc'>, string>>,
Expect<Equal<Format<'a%sbc'>, (s1: string) => string>>,
Expect<Equal<Format<'a%dbc'>, (d1: number) => string>>,
Expect<Equal<Format<'a%%dbc'>, string>>,
Expect<Equal<Format<'a%%%dbc'>, (d1: number... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00545-hard-printf/template.ts | questions/00545-hard-printf/template.ts | type Format<T extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00011-easy-tuple-to-object/test-cases.ts | questions/00011-easy-tuple-to-object/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
const tuple = ['tesla', 'model 3', 'model X', 'model Y'] as const
const tupleNumber = [1, 2, 3, 4] as const
const sym1 = Symbol(1)
const sym2 = Symbol(2)
const tupleSymbol = [sym1, sym2] as const
const tupleMix = [1, '2', 3, '4', sym1] as const
type cases = ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00011-easy-tuple-to-object/template.ts | questions/00011-easy-tuple-to-object/template.ts | type TupleToObject<T extends readonly any[]> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00189-easy-awaited/test-cases.ts | questions/00189-easy-awaited/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type X = Promise<string>
type Y = Promise<{ field: number }>
type Z = Promise<Promise<string | number>>
type Z1 = Promise<Promise<Promise<string | boolean>>>
type T = { then: (onfulfilled: (arg: number) => any) => any }
type cases = [
Expect<Equal<MyAwaite... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00189-easy-awaited/template.ts | questions/00189-easy-awaited/template.ts | type MyAwaited<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02693-medium-endswith/test-cases.ts | questions/02693-medium-endswith/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<EndsWith<'abc', 'bc'>, true>>,
Expect<Equal<EndsWith<'abc', 'abc'>, true>>,
Expect<Equal<EndsWith<'abc', 'd'>, false>>,
Expect<Equal<EndsWith<'abc', 'ac'>, false>>,
Expect<Equal<EndsWith<'abc', ''>, true>>,
Expect<Equal... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02693-medium-endswith/template.ts | questions/02693-medium-endswith/template.ts | type EndsWith<T extends string, U extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/30958-medium-pascals-triangle/test-cases.ts | questions/30958-medium-pascals-triangle/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<
Equal<
Pascal<1>,
[
[1],
]
>
>,
Expect<
Equal<
Pascal<3>,
[
[1],
[1, 1],
[1, 2, 1],
]
>
>,
Expect<
Equal<
Pascal<5>,
[
... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/30958-medium-pascals-triangle/template.ts | questions/30958-medium-pascals-triangle/template.ts | type Pascal<N extends number> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/29650-medium-extracttoobject/test-cases.ts | questions/29650-medium-extracttoobject/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type test1 = { id: '1', myProp: { foo: '2' } }
type testExpect1 = {
id: '1'
foo: '2'
}
type test2 = {
id: '1'
prop1: { zoo: '2' }
prop2: { foo: '4' }
}
type testExpect2 = {
id: '1'
prop1: { zoo: '2' }
foo: '4'
}
type test3 = {
prop1: { z... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/29650-medium-extracttoobject/template.ts | questions/29650-medium-extracttoobject/template.ts | type ExtractToObject<T, U> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/31447-extreme-countreversepairs/test-cases.ts | questions/31447-extreme-countreversepairs/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<CountReversePairs<[5, 2, 6, 1]>, 4>>,
Expect<Equal<CountReversePairs<[1, 2, 3, 4]>, 0>>,
Expect<Equal<CountReversePairs<[-1, -1]>, 0>>,
Expect<Equal<CountReversePairs<[-1]>, 0>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/31447-extreme-countreversepairs/template.ts | questions/31447-extreme-countreversepairs/template.ts | type CountReversePairs<T extends number[]> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00300-hard-string-to-number/test-cases.ts | questions/00300-hard-string-to-number/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<ToNumber<'0'>, 0>>,
Expect<Equal<ToNumber<'5'>, 5>>,
Expect<Equal<ToNumber<'12'>, 12>>,
Expect<Equal<ToNumber<'27'>, 27>>,
Expect<Equal<ToNumber<'18@7_$%'>, never>>,
]
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00300-hard-string-to-number/template.ts | questions/00300-hard-string-to-number/template.ts | type ToNumber<S extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/19458-hard-snakecase/test-cases.ts | questions/19458-hard-snakecase/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<SnakeCase<'hello'>, 'hello'>>,
Expect<Equal<SnakeCase<'userName'>, 'user_name'>>,
Expect<Equal<SnakeCase<'getElementById'>, 'get_element_by_id'>>,
Expect<Equal<SnakeCase<'getElementById' | 'getElementByClassNames'>, 'get_el... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/19458-hard-snakecase/template.ts | questions/19458-hard-snakecase/template.ts | type SnakeCase<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02757-medium-partialbykeys/test-cases.ts | questions/02757-medium-partialbykeys/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
interface User {
name: string
age: number
address: string
}
interface UserPartialName {
name?: string
age: number
address: string
}
interface UserPartialNameAndAge {
name?: string
age?: number
address: string
}
type cases = [
Expect<Equ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02757-medium-partialbykeys/template.ts | questions/02757-medium-partialbykeys/template.ts | type PartialByKeys<T, K> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00017-hard-currying-1/test-cases.ts | questions/00017-hard-currying-1/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
const curried1 = Currying((a: string, b: number, c: boolean) => true)
const curried2 = Currying((a: string, b: number, c: boolean, d: boolean, e: boolean, f: string, g: boolean) => true)
const curried3 = Currying(() => true)
type cases = [
Expect<Equal<
... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00017-hard-currying-1/template.ts | questions/00017-hard-currying-1/template.ts | declare function Currying(fn: any): any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00147-hard-c-printf-parser/test-cases.ts | questions/00147-hard-c-printf-parser/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<ParsePrintFormat<''>, []>>,
Expect<Equal<ParsePrintFormat<'Any string.'>, []>>,
Expect<Equal<ParsePrintFormat<'The result is %d.'>, ['dec']>>,
Expect<Equal<ParsePrintFormat<'The result is %%d.'>, []>>,
Expect<Equal<ParseP... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00147-hard-c-printf-parser/template.ts | questions/00147-hard-c-printf-parser/template.ts | type ControlsMap = {
c: 'char'
s: 'string'
d: 'dec'
o: 'oct'
h: 'hex'
f: 'float'
p: 'pointer'
}
type ParsePrintFormat = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/31824-hard-length-of-string-3/test-cases.ts | questions/31824-hard-length-of-string-3/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type Deced = [10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
type Signum = Deced[number]
type Reped<
S extends string,
C extends Signum,
R extends string = '',
>
= (C extends 0
? R
: Reped<S, Deced[C], `${R}${S}`>
)
type t0 = 'k'
type t1 = Reped<t0, 10>
... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/31824-hard-length-of-string-3/template.ts | questions/31824-hard-length-of-string-3/template.ts | type LengthOfString<S extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/09896-medium-get-middle-element/test-cases.ts | questions/09896-medium-get-middle-element/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<GetMiddleElement<[]>, []>>,
Expect<Equal<GetMiddleElement<[1, 2, 3, 4, 5]>, [3]>>,
Expect<Equal<GetMiddleElement<[1, 2, 3, 4, 5, 6]>, [3, 4]>>,
Expect<Equal<GetMiddleElement<[() => string]>, [() => string]>>,
Expect<Equal... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/09896-medium-get-middle-element/template.ts | questions/09896-medium-get-middle-element/template.ts | type GetMiddleElement<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02828-hard-classpublickeys/test-cases.ts | questions/02828-hard-classpublickeys/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
class A {
public str: string
protected num: number
private bool: boolean
constructor() {
this.str = 'naive'
this.num = 19260917
this.bool = true
}
getNum() {
return Math.random()
}
}
type cases = [
Expect<Equal<ClassPublicKey... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/02828-hard-classpublickeys/template.ts | questions/02828-hard-classpublickeys/template.ts | type ClassPublicKeys = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/03192-medium-reverse/test-cases.ts | questions/03192-medium-reverse/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Reverse<[]>, []>>,
Expect<Equal<Reverse<['a', 'b']>, ['b', 'a']>>,
Expect<Equal<Reverse<['a', 'b', 'c']>, ['c', 'b', 'a']>>,
]
type errors = [
// @ts-expect-error
Reverse<'string'>,
// @ts-expect-error
Reverse<{ key:... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/03192-medium-reverse/template.ts | questions/03192-medium-reverse/template.ts | type Reverse<T> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/04260-medium-nomiwase/test-cases.ts | questions/04260-medium-nomiwase/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<AllCombinations<''>, ''>>,
Expect<Equal<AllCombinations<'A'>, '' | 'A'>>,
Expect<Equal<AllCombinations<'AB'>, '' | 'A' | 'B' | 'AB' | 'BA'>>,
Expect<Equal<AllCombinations<'ABC'>, '' | 'A' | 'B' | 'C' | 'AB' | 'AC' | 'BA' | ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/04260-medium-nomiwase/template.ts | questions/04260-medium-nomiwase/template.ts | type AllCombinations<S> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00119-medium-replaceall/test-cases.ts | questions/00119-medium-replaceall/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<ReplaceAll<'foobar', 'bar', 'foo'>, 'foofoo'>>,
Expect<Equal<ReplaceAll<'foobar', 'bag', 'foo'>, 'foobar'>>,
Expect<Equal<ReplaceAll<'foobarbar', 'bar', 'foo'>, 'foofoofoo'>>,
Expect<Equal<ReplaceAll<'t y p e s', ' ', ''>, ... | typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00119-medium-replaceall/template.ts | questions/00119-medium-replaceall/template.ts | type ReplaceAll<S extends string, From extends string, To extends string> = any
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
type-challenges/type-challenges | https://github.com/type-challenges/type-challenges/blob/00122042c4c58f12227e97c68235dfde1fd2129d/questions/00268-easy-if/test-cases.ts | questions/00268-easy-if/test-cases.ts | import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<If<true, 'a', 'b'>, 'a'>>,
Expect<Equal<If<false, 'a', 2>, 2>>,
Expect<Equal<If<boolean, 'a', 2>, 'a' | 2>>,
]
// @ts-expect-error
type error = If<null, 'a', 'b'>
| typescript | MIT | 00122042c4c58f12227e97c68235dfde1fd2129d | 2026-01-04T15:39:52.431107Z | false |
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