react-elegant-ui/esm/lib/findIndexLoop.js

Elegant UI components, made by BEM best practices for react

// TODO: rename to `findIndex`
/**
 * Complex search by array top to down or vice versa
 *
 * Loop search from start index until start index inclusive
 *
 * @param items array of items
 * @param predicate callback to check suitable
 * @param direction 1 to positive search, -1 to negative search
 */
export var findIndexLoop = function (items, predicate, startIndex, direction,
/**
 * allow disable loop search
 */
loop) {
  if (startIndex === void 0) {
    startIndex = 0;
  }
  if (direction === void 0) {
    direction = 1;
  }
  if (loop === void 0) {
    loop = true;
  }
  var lastIndex = items.length - 1;
  // Prevent work when index out of bound
  if (startIndex > lastIndex || startIndex < 0) {
    throw new Error('Array out of bounds');
  }
  var index = startIndex;
  var iteration = 0;
  var isAllowSelfCheck = true;
  while (index !== startIndex || isAllowSelfCheck) {
    if (index === startIndex) {
      isAllowSelfCheck = false;
    }
    var item = items[index];
    if (item !== undefined) {
      var isSuitableItem = predicate(item, iteration, items);
      if (isSuitableItem) return index;
    }
    iteration++;
    index += direction;
    // Reset index to opposite end by going out of bounds
    if (direction === 1 && index > lastIndex) {
      if (!loop) break;
      index = 0;
      continue;
    } else if (direction === -1 && index < 0) {
      if (!loop) break;
      index = lastIndex;
      continue;
    }
  }
  return -1;
};