feat(question): add #19749 - IsEqual

type-challenges · Nov 25, 2022 · 9072c7e · 9072c7e
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diff --git a/questions/19749-medium-isequal/README.md b/questions/19749-medium-isequal/README.md
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+Implements the equal operator that returns a boolean for whether the two given types are equal.
diff --git a/questions/19749-medium-isequal/info.yml b/questions/19749-medium-isequal/info.yml
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+difficulty: medium
+title: IsEqual
+author:
+ github: doz13189
+ name: Takahiro Kato
+
diff --git a/questions/19749-medium-isequal/template.ts b/questions/19749-medium-isequal/template.ts
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+type IsEqual<X, Y> = any
diff --git a/questions/19749-medium-isequal/test-cases.ts b/questions/19749-medium-isequal/test-cases.ts
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+import type { Equal, Expect } from '@type-challenges/utils'
+
+type cases = [
+ Expect<Equal<IsEqual<number, string>, false>>,
+ Expect<Equal<IsEqual<1, 1>, true>>,
+ Expect<Equal<IsEqual<any, 1>, false>>,
+ Expect<Equal<IsEqual<1 | 2, 1>, false>>,
+ Expect<Equal<IsEqual<any, never>, false>>,
+ Expect<Equal<IsEqual<[any], [number]>, false>>,
+]