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JavaScript's functional programming helper library.

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import isArrayLike from './_isArrayLike.js';
import values from './values.js';
import indexOf from './indexOf.js';

// Determine if the array or object contains a given item (using `===`).
export default function contains(obj, item, fromIndex, guard) {
  if (!isArrayLike(obj)) obj = values(obj);
  if (typeof fromIndex != 'number' || guard) fromIndex = 0;
  return indexOf(obj, item, fromIndex) >= 0;
}