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Diffstat (limited to 'node_modules/date-fns/getWeekYear/index.js')
| -rw-r--r-- | node_modules/date-fns/getWeekYear/index.js | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/node_modules/date-fns/getWeekYear/index.js b/node_modules/date-fns/getWeekYear/index.js new file mode 100644 index 0000000..616b597 --- /dev/null +++ b/node_modules/date-fns/getWeekYear/index.js @@ -0,0 +1,80 @@ +"use strict"; + +var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default; +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = getWeekYear; +var _index = _interopRequireDefault(require("../startOfWeek/index.js")); +var _index2 = _interopRequireDefault(require("../toDate/index.js")); +var _index3 = _interopRequireDefault(require("../_lib/toInteger/index.js")); +var _index4 = _interopRequireDefault(require("../_lib/requiredArgs/index.js")); +var _index5 = require("../_lib/defaultOptions/index.js"); +/** + * @name getWeekYear + * @category Week-Numbering Year Helpers + * @summary Get the local week-numbering year of the given date. + * + * @description + * Get the local week-numbering year of the given date. + * The exact calculation depends on the values of + * `options.weekStartsOn` (which is the index of the first day of the week) + * and `options.firstWeekContainsDate` (which is the day of January, which is always in + * the first week of the week-numbering year) + * + * Week numbering: https://en.wikipedia.org/wiki/Week#Week_numbering + * + * @param {Date|Number} date - the given date + * @param {Object} [options] - an object with options. + * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale} + * @param {0|1|2|3|4|5|6} [options.weekStartsOn=0] - the index of the first day of the week (0 - Sunday) + * @param {1|2|3|4|5|6|7} [options.firstWeekContainsDate=1] - the day of January, which is always in the first week of the year + * @returns {Number} the local week-numbering year + * @throws {TypeError} 1 argument required + * @throws {RangeError} `options.weekStartsOn` must be between 0 and 6 + * @throws {RangeError} `options.firstWeekContainsDate` must be between 1 and 7 + * + * @example + * // Which week numbering year is 26 December 2004 with the default settings? + * const result = getWeekYear(new Date(2004, 11, 26)) + * //=> 2005 + * + * @example + * // Which week numbering year is 26 December 2004 if week starts on Saturday? + * const result = getWeekYear(new Date(2004, 11, 26), { weekStartsOn: 6 }) + * //=> 2004 + * + * @example + * // Which week numbering year is 26 December 2004 if the first week contains 4 January? + * const result = getWeekYear(new Date(2004, 11, 26), { firstWeekContainsDate: 4 }) + * //=> 2004 + */ +function getWeekYear(dirtyDate, options) { + var _ref, _ref2, _ref3, _options$firstWeekCon, _options$locale, _options$locale$optio, _defaultOptions$local, _defaultOptions$local2; + (0, _index4.default)(1, arguments); + var date = (0, _index2.default)(dirtyDate); + var year = date.getFullYear(); + var defaultOptions = (0, _index5.getDefaultOptions)(); + var firstWeekContainsDate = (0, _index3.default)((_ref = (_ref2 = (_ref3 = (_options$firstWeekCon = options === null || options === void 0 ? void 0 : options.firstWeekContainsDate) !== null && _options$firstWeekCon !== void 0 ? _options$firstWeekCon : options === null || options === void 0 ? void 0 : (_options$locale = options.locale) === null || _options$locale === void 0 ? void 0 : (_options$locale$optio = _options$locale.options) === null || _options$locale$optio === void 0 ? void 0 : _options$locale$optio.firstWeekContainsDate) !== null && _ref3 !== void 0 ? _ref3 : defaultOptions.firstWeekContainsDate) !== null && _ref2 !== void 0 ? _ref2 : (_defaultOptions$local = defaultOptions.locale) === null || _defaultOptions$local === void 0 ? void 0 : (_defaultOptions$local2 = _defaultOptions$local.options) === null || _defaultOptions$local2 === void 0 ? void 0 : _defaultOptions$local2.firstWeekContainsDate) !== null && _ref !== void 0 ? _ref : 1); + + // Test if weekStartsOn is between 1 and 7 _and_ is not NaN + if (!(firstWeekContainsDate >= 1 && firstWeekContainsDate <= 7)) { + throw new RangeError('firstWeekContainsDate must be between 1 and 7 inclusively'); + } + var firstWeekOfNextYear = new Date(0); + firstWeekOfNextYear.setFullYear(year + 1, 0, firstWeekContainsDate); + firstWeekOfNextYear.setHours(0, 0, 0, 0); + var startOfNextYear = (0, _index.default)(firstWeekOfNextYear, options); + var firstWeekOfThisYear = new Date(0); + firstWeekOfThisYear.setFullYear(year, 0, firstWeekContainsDate); + firstWeekOfThisYear.setHours(0, 0, 0, 0); + var startOfThisYear = (0, _index.default)(firstWeekOfThisYear, options); + if (date.getTime() >= startOfNextYear.getTime()) { + return year + 1; + } else if (date.getTime() >= startOfThisYear.getTime()) { + return year; + } else { + return year - 1; + } +} +module.exports = exports.default;
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