| 1 | import { FindOptions } from './findoptions';
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| 2 | /**
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| 3 | * Returns the index of the first element in the array that satisfies the provided testing function.
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| 4 | * Otherwise, it returns -1, indicating that no element passed the test.
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| 5 | *
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| 6 | * @export
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| 7 | * @template T The type of the elements in the source sequence.
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| 8 | * @param {Iterable<T>} source An iterable sequence whose elements to apply the predicate to.
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| 9 | * @param {FindOptions<T>} options The options for a predicate for filtering, thisArg for binding and AbortSignal for cancellation.
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| 10 | * @returns {number} The index of the first element in the array that passes the test. Otherwise, -1.
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| 11 | */
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| 12 | export declare function findIndex<T>(source: Iterable<T>, options: FindOptions<T>): number;
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