import toDate from "../toDate/index.js"; import requiredArgs from "../_lib/requiredArgs/index.js"; /** * @name parseJSON * @category Common Helpers * @summary Parse a JSON date string * * @description * Converts a complete ISO date string in UTC time, the typical format for transmitting * a date in JSON, to a JavaScript `Date` instance. * * This is a minimal implementation for converting dates retrieved from a JSON API to * a `Date` instance which can be used with other functions in the `date-fns` library. * The following formats are supported: * * - `2000-03-15T05:20:10.123Z`: The output of `.toISOString()` and `JSON.stringify(new Date())` * - `2000-03-15T05:20:10Z`: Without milliseconds * - `2000-03-15T05:20:10+00:00`: With a zero offset, the default JSON encoded format in some other languages * - `2000-03-15T05:20:10+05:45`: With a positive or negative offset, the default JSON encoded format in some other languages * - `2000-03-15T05:20:10+0000`: With a zero offset without a colon * - `2000-03-15T05:20:10`: Without a trailing 'Z' symbol * - `2000-03-15T05:20:10.1234567`: Up to 7 digits in milliseconds field. Only first 3 are taken into account since JS does not allow fractional milliseconds * - `2000-03-15 05:20:10`: With a space instead of a 'T' separator for APIs returning a SQL date without reformatting * * For convenience and ease of use these other input types are also supported * via [toDate]{@link https://date-fns.org/docs/toDate}: * * - A `Date` instance will be cloned * - A `number` will be treated as a timestamp * * Any other input type or invalid date strings will return an `Invalid Date`. * * @param {String|Number|Date} argument A fully formed ISO8601 date string to convert * @returns {Date} the parsed date in the local time zone * @throws {TypeError} 1 argument required */ export default function parseJSON(argument) { requiredArgs(1, arguments); if (typeof argument === 'string') { var parts = argument.match(/(\d{4})-(\d{2})-(\d{2})[T ](\d{2}):(\d{2}):(\d{2})(?:\.(\d{0,7}))?(?:Z|(.)(\d{2}):?(\d{2})?)?/); if (parts) { // Group 8 matches the sign return new Date(Date.UTC(+parts[1], +parts[2] - 1, +parts[3], +parts[4] - (+parts[9] || 0) * (parts[8] == '-' ? -1 : 1), +parts[5] - (+parts[10] || 0) * (parts[8] == '-' ? -1 : 1), +parts[6], +((parts[7] || '0') + '00').substring(0, 3))); } return new Date(NaN); } return toDate(argument); }