import { preAllocate } from '../../../deps'

/**
 * @desc Converts `map` to its key-value pairs.
 * @since 5.0.0-beta.6
 *
 * @return the key-value pairs.
 *
 * {@link https://github.com/andrewplummer/Sugar/blob/master/lib/common.js#L1235 sugar-settoarray}
 * {@link https://github.com/lodash/lodash/blob/master/.internal/mapToArray.js lodash-maptoarray}
 * @see {@link lodash-maptoarray}
 * @see {@link sugar-maptoarray}
 * @see cast/pairs
 *
 * @example
 *    mapToArray(new Map(Object.entries({eh: true})))
 *    //=> [ ['eh', true] ]
 */
function fromMapToArray<Key extends string | symbol = string, Value = any>(
  map: Map<Key, Value>
): Array<[Key, Value]> {
  let index = -1
  const result = preAllocate(map.size)

  map.forEach((value, key) => {
    result[++index] = [key, value]
  })

  return result
}

export { fromMapToArray }
export default fromMapToArray