import { EqualityComparer, IEqualityComparer } from '../equality-comparer'
import * as utils from '../utils'
import * as assistance from './assistance'

export function contains<TSource>(source: Iterable<TSource>, value: TSource, comparer?: IEqualityComparer<TSource>): boolean {
  utils.throws.ThrowIfNull('source', source)
  comparer = comparer || EqualityComparer.Default()
  return assistance.contains(source, value, (x, y) => comparer.Equals(x, y))
}