mmyoji

/**
 * LCM ... Least Common Multiple (最小公倍数)
 * GCD ... Greatest Common Divisor (最大公約数)
 *
 * LCM = (A * B) / GCD
 */

function _findGCD(a: number, b: number): number {
  if (a === 0) return b;
  if (b === 0) return a;

mmyoji

// https://deno.com/blog/queues

function listenQueue<T>(fn: (msg: T) => Promise<void>) {
  //
}


// lib/kv/queue/_core.ts
const messageTypes = {
  foo: "foo",

mmyoji

// see https://deno.land/std/datetime/constants.ts?source
const MILLISECOND = 1;
const SECOND = MILLISECOND * 1e3;
const MINUTE = SECOND * 60;
const HOUR = MINUTE * 60;
const DAY = HOUR * 24;
const WEEK = DAY * 7;

type Unit =
  | "milliseconds"

mmyoji

Steps

[Optional] Uninstall Docker Desktop

1. Start Docker Desktop
2. Remove all docker resources (e.g., docker container prune)
3. Stop Docker Desktop
4. rm -rf ~/.docker

Install Docker in WSL2

mmyoji

Install pnpm

see https://pnpm.io/installation

$ pnpm --version

corepack will NOT be distributed with Node.js v25>= https://nodejs.org/docs/latest-v24.x/api/corepack.html

mmyoji

// https://www.typescriptlang.org/play#example/nominal-typing

type ValidatedInputString = string & { __brand: "User Input Post Validation" };


// https://speakerdeck.com/naoya/typescript-niyoru-graphql-batukuendokai-fa-75b3dab7-90a8-4169-a4dc-d1e7410b9dbd?slide=91

declare const __newtype: unique symbol;

export type newtype<Constructor, Type> = Type & {

mmyoji

// see: https://www.bbss.dev/posts/eventloop/

/**
 * @example
 * ```ts
 * const fn = makePromise(() => {
 *   return heavyFunc();
 * });
 * // or you can write:
 * // const fn = makePromise(heavyFunc);

mmyoji

ref: https://stackoverflow.com/a/62885391

Run test with the following command:

node --expose-gc ./node_modules/.bin/jest --runInBand --logHeapUsage

• --expose-gc is V8 options (see node --v8-options)
• --logHeapUsage: https://jestjs.io/docs/cli#--logheapusage

mmyoji

mysql> SELECT * FROM information_schema.SCHEMATA WHERE schema_name = "test";
+--------------+-------------+----------------------------+------------------------+----------+
| CATALOG_NAME | SCHEMA_NAME | DEFAULT_CHARACTER_SET_NAME | DEFAULT_COLLATION_NAME | SQL_PATH |
+--------------+-------------+----------------------------+------------------------+----------+
| def          | test        | latin1                     | latin1_swedish_ci      | NULL     |
+--------------+-------------+----------------------------+------------------------+----------+
1 row in set (0.00 sec)

-- https://stackoverflow.com/a/6115705
mysql> ALTER DATABASE test CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

mmyoji

# https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/distribution-web-values-specify.html#DownloadDistValuesPathPattern

# maybe settings are like the following:
- OriginSettings:
  - OriginDomain: MY-EXAMPLE-BUCKET.s3.ap-northeast-1.amazonaws.com
    OriginPath: /static
  - OriginDomain: example-load-balancer-1234567890.ap-northeast-1.alb.amazonaws.com
    OriginPath: *