| 1 | /**
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| 2 | * Returns the value of the first element in the sequence that satisfies the provided testing function.
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| 3 | * Otherwise undefined is returned.
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| 4 | * @param {Iterable<T>} source Source sequence.
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| 5 | * @param {function(value: T, index: number): boolean} predicate Function to execute for every item in the sequence.
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| 6 | * @param {Object} [thisArg] Object to use as this when executing callback.
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| 7 | * @return {T | undefined} The value of the first element in the sequence that satisfies the provided testing function.
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| 8 | * Otherwise undefined is returned.
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| 9 | */
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| 10 | export declare function find<T, S extends T>(source: Iterable<T>, predicate: (value: T, index: number) => value is S, thisArg?: any): S | undefined;
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| 11 | export declare function find<T>(source: Iterable<T>, predicate: (value: T, index: number) => boolean, thisArg?: any): T | undefined;
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