import { NoMatchIndexNominal } from "./typing";
/**
 * Returns the index of the first occurrence of a value in an array.
 * @param array the array where the search is performed.
 * @param value the value to locate in the array
 * @param startIndex the array index at which to begin the search. If `startIndex` is omitted, the search starts at index 0.
 * @param count the number of elements in the section to search.
 */
export declare function indexOf<TArray extends readonly any[], TValue>(array: TArray, value: TValue, startIndex?: number, count?: number): TValue extends TArray[number] ? number : NoMatchIndexNominal;
/**
 * Returns the index of the first occurrence of a value in an array.
 * @param array the array where the search is performed.
 * @param value the value to locate in the array
 * @param startIndex the array index at which to begin the search. If `startIndex` is omitted, the search starts at index 0.
 * @param count the number of elements in the section to search.
 */
export declare function indexOf<TArray extends readonly any[]>(array: TArray, value: TArray[number], startIndex?: number, count?: number): number;
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