| 1 | import { Option, PresentArray } from '@glimmer/interfaces';
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| 2 | export declare function isPresent<T>(list: readonly T[]): list is PresentArray<T>;
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| 3 | export declare function ifPresent<T, U, V>(list: T[], ifPresent: (input: PresentArray<T>) => U, otherwise: () => V): U | V;
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| 4 | export declare function toPresentOption<T>(list: T[]): Option<PresentArray<T>>;
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| 5 | export declare function assertPresent<T>(list: T[], message?: string): asserts list is PresentArray<T>;
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| 6 | export declare function mapPresent<T, U>(list: PresentArray<T>, callback: (input: T) => U): PresentArray<U>;
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| 7 | export declare function mapPresent<T, U>(list: PresentArray<T> | null, callback: (input: T) => U): PresentArray<U> | null;
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| 8 | |
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