AimWhy’s gists

AimWhy / 漩涡型二位数组.js

Created April 18, 2025 07:25

	function vortex(n, m) {
	let x = 0, y = 0; count = 1;

	const result = Array(n).fill(0).map(() => Array(m).fill(0));
	const check = (a, b) => result[a] && result[a][b] === 0;

	let pre = NaN;
	while (pre !== count) {
	pre = count;
	while (check(x, y + 1)) result[x][y++] = count++;

AimWhy / GetYears.ts

Created March 19, 2025 01:01

	type NumberToString<N extends number> = `${N}`;
	type StringToNumber<S extends string> = S extends `${infer N extends number}` ? N : never;

	type StringToCharArr<S extends string> = S extends `${infer First}${infer Rest}` ? [First, ...StringToCharArr<Rest>] : [];
	type CharArrToString<Arr extends string[]> = Arr extends [infer First extends string, ...infer Rest extends string[]] ? `${First}${CharArrToString<Rest>}` : '';

	type DigitMap = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '0']

	type CharArrAddOne<Arr extends string[], Acc extends string[] = []> = Arr extends [...infer Rest extends string[], infer Last extends string]
	? Last extends DigitMap[number]

AimWhy / downloadFileStream.ts

Created March 2, 2025 06:13

	import streamSaver from "streamsaver";
	import downloadFile from "./downloadFile";

	const HAS_FILE_SYSTEM_ACCESS_API = !!window.showSaveFilePicker;

	// Why is this in UI? streamsaver does not work in worker. Otherwise it would be better there.
	// If this is ever moved to the worker, be careful about file system access API crashing Chrome 93/94 https://dumbmatter.com/file-system-access-worker-bug/
	const downloadFileStream = async (
	stream: boolean,
	filename: string,

AimWhy / simpleDownload.js

Last active March 2, 2025 11:02

	export const inIframe = globalThis.window !== undefined && globalThis.window !== globalThis.top
	const supportShowSaveFilePicker = "showSaveFilePicker" in globalThis

	function legacySaveFile(file, options) {
	const link = document.createElement("a")
	link.download = options.suggestedName
	link.href = URL.createObjectURL(file)
	link.click()
	setTimeout(() => URL.revokeObjectURL(link.href), options.timeout ?? 10_000)
	}

AimWhy / getBlobWritable.ts

Last active March 2, 2025 11:17

	interface BlobWritable {
	getWriter: () => {
	abort: () => Promise<void>;
	close: () => Promise<void>;
	closed: Promise<undefined>;
	desiredSize: number \| null;
	ready: Promise<undefined>;
	releaseLock: () => void;
	write: (chunk: Uint8Array) => Promise<void>;
	};

AimWhy / saveAudioToFile.js

Created March 2, 2025 05:07

	export function urlToBlob(url) {
	return new Promise((resolve, reject) => {
	const xhr = new XMLHttpRequest();
	xhr.open('GET', url, true);
	xhr.responseType = 'blob';
	xhr.onload = () => {
	if (xhr.status === 200) {
	resolve(xhr.response);
	} else {
	reject(new Error(`urlToBlob: Request failed with status ${xhr.status}`));

AimWhy / ObjectPool.ts

Created March 2, 2025 01:00

	export interface IDisposable {
	dispose(): void;
	}

	export interface IReference<T> extends IDisposable {
	readonly object: T;
	}

	export interface IObjectData {
	getId(): unknown;

AimWhy / workerPool.js

Last active March 10, 2025 07:57

	const workerPool = (concurrentCount) => {
	const queue = [];
	let max = Math.max(concurrentCount, 1);

	const resetMax = (m) => {
	max = Math.max(m, 1);
	checkQueue();
	};

	const checkQueue = () => {

AimWhy / broadcast.js

Last active February 28, 2025 13:42

broadcast.js

	"use strict";

	self.addEventListener('install', (event) => {
	event.waitUntil(self.skipWaiting());
	});

	self.addEventListener('activate', (event) => {
	event.waitUntil(self.clients.claim());
	});

AimWhy / synchronizedLock.js

Created February 27, 2025 11:29

王洪莹 AimWhy