UEA-Prodem

node_modules/date-fns/_lib/test/tzOffsetTransitions.d.ts

@@ -0,0 +1,48 @@
+interface PartialInterval {
+  start: Date | undefined;
+  end: Date | undefined;
+}
+/**
+ * Fetch the start and end of DST for the local time
+ * zone in a given year.
+ * We'll assume that DST start & end are the first
+ * forward and the last back transitions in the year,
+ * except transitions in Jan or Dec which are likely
+ * to be permanent TZ changes rather than DST changes.
+ * @param year
+ * @returns object with two Date-valued properties:
+ * - `start` is the first instant of DST in the Spring,
+ *   or undefined if there's no DST in this year.
+ * - `end` is the first instant of standard time
+ *   in the Fall, or undefined if there's no DST in
+ *   this year.
+ */
+export declare function getDstTransitions(year: number): PartialInterval;
+/**
+ * Fetch all timezone-offset transitions in a given
+ * year.  These are almost always DST transitions,
+ * but sometimes there are non-DST changes, e.g.
+ * when a country changes its time zone
+ * @param year
+ * @returns array of objects, each  with the following
+ * propeerties:
+ * - `date` - a `Date` representing the first instant
+ *   when the new timezone offset is effective.
+ * - `type` - either `forward` for skippnig time like
+ *   the Spring transition to DST.
+ * - `before` - the timezone offset before the transition.
+ *   For example, the UTC-0400 offset will return -240.
+ *   To match how times are displayed in ISO 8601 format,
+ *   the sign of this value is reversed from the return
+ *   value of `Date.getTimezoneOffset`.
+ * - `after` - the timezone offset after the transition.
+ *   Examples and caveats are the same as `before`.
+
+ */
+export declare function getTzOffsetTransitions(year: number): {
+  date: Date;
+  type: string;
+  before: number;
+  after: number;
+}[];
+export {};