source: node_modules/victory-vendor/lib-vendor/d3-time/src/year.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.years = exports.default = void 0;
var _interval = _interopRequireDefault(require("./interval.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var year = (0, _interval.default)(function (date) {
  date.setMonth(0, 1);
  date.setHours(0, 0, 0, 0);
}, function (date, step) {
  date.setFullYear(date.getFullYear() + step);
}, function (start, end) {
  return end.getFullYear() - start.getFullYear();
}, function (date) {
  return date.getFullYear();
});

// An optimized implementation for this simple case.
year.every = function (k) {
  return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : (0, _interval.default)(function (date) {
    date.setFullYear(Math.floor(date.getFullYear() / k) * k);
    date.setMonth(0, 1);
    date.setHours(0, 0, 0, 0);
  }, function (date, step) {
    date.setFullYear(date.getFullYear() + step * k);
  });
};
var _default = exports.default = year;
var years = exports.years = year.range;