Provides utility functions to make your geoguessr scripts independent of arbitrary changes to class name suffixes
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此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.cn-greasyfork.org/scripts/460322/1151661/Geoguessr%20Styles%20Scan.js
Geoguessr sometimes updates its stylesheets, changing its class names, which can break user scripts despite no visible changes to the UI. These minor changes involve the last 5 characters of a class name, which always follow 2 underscores. For example, "status_section__8uP8o" is the class name for a section in the purple info bar at the top right of the screen in classic games.
This library provides utility functions to make your scripts independent of random changes to these last 5 characters, by letting you define class names by their prefix (underscores included: "status_section__") rather than the full name.
function cn(string) outputs the geoguessr class name corresponding to the prefix. For example, cn("status_section__") evaluates to "status_section__8uP8o".
async function scanStyles() fetches Geoguessr class names from stylesheets listed in the <head> block. You must use scanStyles before being able to use cn. Note that it is possible that not all styles you need are there at the moment when you're calling scanStyles, therefore you might want to call it several times. Calling it "too many times" should never be a performance issue as fetching a stylesheet uses cache beyond the first fetch.
function checkAllStylesFound(list) outputs a boolean to let you check whether all class name prefixes inside list are ready for use by cn.
