Edward Betts
ea4980a5d7
Adjust European short trip heuristic from >3 days to >1 day to correctly detect when user has returned home from European trips. This fixes the April 29-30, 2023 case where the location incorrectly showed "Sankt Georg, Hamburg" instead of "Bristol" when the user was free (no events scheduled) after the foss-north trip ended on April 27. The previous logic required more than 3 days to pass before assuming return home from European countries, but for short European trips by rail/ferry, users typically return within 1-2 days. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
53 lines
2.1 KiB
JavaScript
53 lines
2.1 KiB
JavaScript
/**
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* @fileoverview A variant of EventEmitter which does not give listeners information about each other
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* @author Teddy Katz
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Typedefs
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//------------------------------------------------------------------------------
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/**
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* An event emitter
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* @typedef {Object} SafeEmitter
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* @property {(eventName: string, listenerFunc: Function) => void} on Adds a listener for a given event name
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* @property {(eventName: string, arg1?: any, arg2?: any, arg3?: any) => void} emit Emits an event with a given name.
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* This calls all the listeners that were listening for that name, with `arg1`, `arg2`, and `arg3` as arguments.
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* @property {function(): string[]} eventNames Gets the list of event names that have registered listeners.
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*/
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/**
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* Creates an object which can listen for and emit events.
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* This is similar to the EventEmitter API in Node's standard library, but it has a few differences.
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* The goal is to allow multiple modules to attach arbitrary listeners to the same emitter, without
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* letting the modules know about each other at all.
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* 1. It has no special keys like `error` and `newListener`, which would allow modules to detect when
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* another module throws an error or registers a listener.
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* 2. It calls listener functions without any `this` value. (`EventEmitter` calls listeners with a
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* `this` value of the emitter instance, which would give listeners access to other listeners.)
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* @returns {SafeEmitter} An emitter
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*/
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module.exports = () => {
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const listeners = Object.create(null);
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return Object.freeze({
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on(eventName, listener) {
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if (eventName in listeners) {
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listeners[eventName].push(listener);
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} else {
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listeners[eventName] = [listener];
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}
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},
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emit(eventName, ...args) {
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if (eventName in listeners) {
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listeners[eventName].forEach(listener => listener(...args));
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}
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},
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eventNames() {
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return Object.keys(listeners);
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}
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});
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};
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