Juraj Mäsiar Juraj-Masiar
Juraj-Masiar
/ math_random_collision.js
Last active
October 5, 2023 20:35
How many times do you need to call `Math.random()` to get a collision? (Firefox will tell you, Chrome may not!)
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| // This is a simple experiment to see how likely it is to get a collision when using Math.random() | |
| (() => { | |
| const numbersSet = new Set(); | |
| while (true) { | |
| const random = Math.random(); | |
| // const random = crypto.randomUUID(); | |
| if (numbersSet.has(random)) { | |
| console.log(`Set size: ${numbersSet.size.toLocaleString()}, collision: ${random}`); | |
| break; | |
| } |
Juraj-Masiar
/ firefox_for_android.polyfill.ts
Last active
February 8, 2024 16:02
Polyfill for the missing browser.window API in the Firefox for Android
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| if (!browser.windows) browser.windows = {}; | |
| if (!browser.windows.getCurrent) { | |
| browser.windows.getCurrent = async (getInfo?: browser.windows.GetInfo): Promise<browser.windows.Window> => { | |
| const tabs = await browser.tabs.query({}); | |
| const activeTab = tabs.find(tab => tab.active); | |
| return { | |
| id: activeTab?.windowId ?? 1, | |
| title: activeTab?.title ?? '', | |
| focused: true, | |
| alwaysOnTop: false, |