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import { ZoneIsAbstractError } from "./errors.js";
/**
* @interface
*/
export default class Zone {
/**
* The type of zone
* @abstract
* @type {string}
*/
get type() {
throw new ZoneIsAbstractError();
}
/**
* The name of this zone.
* @abstract
* @type {string}
*/
get name() {
throw new ZoneIsAbstractError();
}
/**
* The IANA name of this zone.
* Defaults to `name` if not overwritten by a subclass.
* @abstract
* @type {string}
*/
get ianaName() {
return this.name;
}
/**
* Returns whether the offset is known to be fixed for the whole year.
* @abstract
* @type {boolean}
*/
get isUniversal() {
throw new ZoneIsAbstractError();
}
/**
* Returns the offset's common name (such as EST) at the specified timestamp
* @abstract
* @param {number} ts - Epoch milliseconds for which to get the name
* @param {Object} opts - Options to affect the format
* @param {string} opts.format - What style of offset to return. Accepts 'long' or 'short'.
* @param {string} opts.locale - What locale to return the offset name in.
* @return {string}
*/
offsetName(ts, opts) {
throw new ZoneIsAbstractError();
}
/**
* Returns the offset's value as a string
* @abstract
* @param {number} ts - Epoch milliseconds for which to get the offset
* @param {string} format - What style of offset to return.
* Accepts 'narrow', 'short', or 'techie'. Returning '+6', '+06:00', or '+0600' respectively
* @return {string}
*/
formatOffset(ts, format) {
throw new ZoneIsAbstractError();
}
/**
* Return the offset in minutes for this zone at the specified timestamp.
* @abstract
* @param {number} ts - Epoch milliseconds for which to compute the offset
* @return {number}
*/
offset(ts) {
throw new ZoneIsAbstractError();
}
/**
* Return whether this Zone is equal to another zone
* @abstract
* @param {Zone} otherZone - the zone to compare
* @return {boolean}
*/
equals(otherZone) {
throw new ZoneIsAbstractError();
}
/**
* Return whether this Zone is valid.
* @abstract
* @type {boolean}
*/
get isValid() {
throw new ZoneIsAbstractError();
}
}
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