code: function assocIndexOf$3(array, key) {
  	  var length = array.length;
  	  while (length--) {
  	    if (eq_1(array[length][0], key)) {
  	      return length;
  	    }
  	  }
  	  return -1;
  	}
docs: Gets the index at which the `key` is found in `array` of key-value pairs.
  
  @private
  @param {Array} array The array to inspect.
  @param {*} key The key to search for.
  @returns {number} Returns the index of the matched value, else `-1`.