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Test of Tuple Operators
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| type TestTuple = [ | |
| "key1", | |
| "union type 1" | "union type 2" | "union type 3", | |
| "key2", | |
| string, | |
| "key3", | |
| number, | |
| "key4", | |
| [string, number, null | string] | |
| ]; | |
| type TestSlicedTuple = SliceTuple<TestTuple, 2>; | |
| // result is [["key1", "union type 1" | "union type 2" | "union type 3"], ["key2", string], ["key3", number], ["key4", [string, number, string | null]]] | |
| type TestSlicedTupleItem = TestSlicedTuple[0]; | |
| // result is ["key1", "union type 1" | "union type 2" | "union type 3"] | |
| type TestListToTypeAlias = MergeTuple<TestSlicedTuple>; | |
| // result is [string, number, string | null]; & {key3: number;} & {key2: string;} & {key1: "type 1";}; | |
| // result is equal to {key4: "an another type"; key3: number; key2: string; key1: "type 1";} | |
| type TestListToUnion = PipeTuple<TestSlicedTuple>; | |
| // result is [] | ["key1", "union type 1" | "union type 2" | "union type 3"] | ["key2", string] | ["key3", number] | ["key4", [string, number, string | null]] | |
| type TestAlias = TestListToTypeAlias["key4"]; | |
| // result is [string, number, string | null] | |
| type TestKeys = TestListToUnion[0]; | |
| // result is "key1" | "key2" | "key3" | "key4" | undefined | |
| type TestTypes = TestListToUnion[1]; | |
| // result is string | number | [string, number, string | null] | undefined |
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