/**
 * Determines whether the array contains a certain element, returning true or false as appropriate (using `Array#includes`).
 *
 * It is the same as `Array#includes`, but serves as a type guard in TS.
 * @param array The array to search in.
 * @param searchElement The element to search for.
 * @param fromIndex The position in this array at which to begin searching for searchElement.
 *
 * @example
 * ```typescript
 * list(1, 2, 3).contains(2); // => true
 * ['a', 'b', 'c'].contains('b'); // => true
 * ```
 *
 * @example
 * ```typescript
 * const s = 'foo' as string;
 * if (list('bar', 'baz').contains(s)) {
 *   const s2 = s; // s2 :: 'bar' | 'baz'
 * }
 * ```
 *
 * @see {@link Array#includes}
 */
declare const contains: <const AS extends readonly unknown[]>(
  array: AS,
  searchElement: unknown,
  fromIndex?: number,
) => searchElement is AS[number];
export default contains;
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