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| 1 | /**
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| 2 | * Ask TS to re-check that `A1` extends `A2`.
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| 3 | * And if it fails, `A2` will be enforced anyway.
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| 4 | * Can also be used to add constraints on parameters.
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| 5 | * @param A1 to check against
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| 6 | * @param A2 to cast to
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| 7 | * @returns `A1 | A2`
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| 8 | * @example
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| 9 | * ```ts
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| 10 | * import {A} from 'ts-toolbelt'
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| 11 | *
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| 12 | * type test0 = A.Cast<'42', string> // '42'
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| 13 | * type test1 = A.Cast<'42', number> // number
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| 14 | * ```
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| 15 | */
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| 16 | export declare type Cast<A1 extends any, A2 extends any> = A1 extends A2 ? A1 : A2;
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