Method fromISO

src/interval.js:136–172

* Create an Interval from an ISO 8601 string. * Accepts ` / `, ` / `, and ` / ` formats. * @param {string} text - the ISO string to parse * @param {Object} [opts] - options to pass DateTime#fromISO and optionally Duration#fromISO * @s

(text, opts)

   * @return {Interval}
   */
  static fromISO(text, opts) {
    const [s, e] = (text || "").split("/", 2);
    if (s && e) {
      let start, startIsValid;
      try {
        start = DateTime.fromISO(s, opts);
        startIsValid = start.isValid;
      } catch (e) {
        startIsValid = false;
      }

      let end, endIsValid;
      try {
        end = DateTime.fromISO(e, opts);
        endIsValid = end.isValid;
      } catch (e) {
        endIsValid = false;
      }

      if (startIsValid && endIsValid) {
        return Interval.fromDateTimes(start, end);
      }

      if (startIsValid) {
        const dur = Duration.fromISO(e, opts);
        if (dur.isValid) {
          return Interval.after(start, dur);
        }
      } else if (endIsValid) {
        const dur = Duration.fromISO(s, opts);
        if (dur.isValid) {
          return Interval.before(end, dur);
        }
      }
    }
    return Interval.invalid("unparsable", `the input "${text}" can't be parsed as ISO 8601`);
  }

  /**
   * Check if an object is an Interval. Works across context boundaries