1var eq = require('./eq');
2
3/**
4 * Gets the index at which the `key` is found in `array` of key-value pairs.
5 *
6 * @private
7 * @param {Array} array The array to inspect.
8 * @param {*} key The key to search for.
9 * @returns {number} Returns the index of the matched value, else `-1`.
10 */
11function assocIndexOf(array, key) {
12  var length = array.length;
13  while (length--) {
14    if (eq(array[length][0], key)) {
15      return length;
16    }
17  }
18  return -1;
19}
20
21module.exports = assocIndexOf;
22