vis-utils/lib/findEqualUnsorted.js

Utility functions for data visualization

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = findEqualUnsorted;
/**
 * Helper function to find the item that matches this value.
 * Since it assumes the data is unsorted, it does a linear scan O(n).
 *
 * @param {Array} array the input array to search
 * @param {Number} value the value to match against (typically pixels)
 * @param {Function} accessor applied to each item in the array to get equivalent
 *   value to compare against
 * @return {Any} The item in the array that has this value or null if not found
 */
function findEqualUnsorted(array, value) {
  var accessor = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : function (d) {
    return d;
  };

  return array.find(function (d) {
    return accessor(d) === value;
  });
}