matsub’s gists

matsub / createUser.sh

Created October 30, 2023 03:25

obtain an access token of AWS Cognito

	#!/bin/bash

	USER_POOL_ID=<user pool ID>
	CLIENT_ID=<application client ID>
	CLIENT_SECRET=<client secret>
	COGNITO_USERNAME=<any user name>
	COGNITO_TEMP_PASSWORD=<temporary password>
	COGNITO_PASSWORD=<any user password>

	SECRET_HASH=$(echo -n "${COGNITO_USERNAME}${CLIENT_ID}" \| openssl dgst -sha256 -hmac "${CLIENT_SECRET}" -binary \| base64)

matsub / event.ts

Created August 31, 2020 05:22

Typed Event Emitter

	import { EventEmitter } from "events";

	interface TypedEventEmitter<T> {
	addListener<K extends keyof T>(event: K, listener: (arg: T[K]) => void): this;
	on<K extends keyof T>(event: K, listener: (arg: T[K]) => void): this;
	once<K extends keyof T>(event: K, listener: (arg: T[K]) => void): this;
	removeListener<K extends keyof T>(
	event: K,
	listener: (arg: T[K]) => void
	): this;

matsub / objectify.js

Last active August 3, 2020 08:39

convert a serial array to an object in JavaScript and TypeScript

	function objectify(arr) {
	return Object.fromEntries(arr.reduce((acc, cur, idx) => (idx%2 ? acc[acc.length-1].push(cur) : acc.push([cur])) && acc, []));
	}

matsub / clock.html

Created July 2, 2020 05:21

	<span></span>
	<script>
	const span = document.querySelector("span");
	function step(timestamp) {
	const date = new Date();
	const d = {
	h: date.getHours().toString().padStart(2, '0'),
	m: date.getMinutes().toString().padStart(2, '0'),
	s: date.getSeconds().toString().padStart(2, '0'),
	ms: Math.floor(date.getMilliseconds() / 100),

matsub / redis-sentinel.yml

Created March 18, 2020 05:06

k8s manifest YAML for redis-sentinel set

matsub / noise.html

Last active March 18, 2020 05:10

static noise with javascript

	<canvas width="854" height="480"></canvas>
	<script>
	const canvas = document.querySelector("canvas");
	const ctx = canvas.getContext("2d");
	const imageData = ctx.createImageData(canvas.width, canvas.height);
	let offsetY = 0;

	// draw like a scanner
	const gradient = ctx.createLinearGradient(0, 0, 0, canvas.height);
	gradient.addColorStop(0, "rgba(0,0,0,0.6)");

matsub / test.js

Created December 28, 2018 06:08

testcafeがLoose equalityをstrict equalityとして評価しているように見える

	import { Selector } from 'testcafe'

	fixture `Loose Equality`
	.page `http://localhost:8000/`

	test('Say Hello', async t => {
	const btn = Selector("button")
	await t.click(btn)

	// assertion

matsub / Dockerfile

Created December 8, 2018 12:41

GitHub Apps

	FROM python:3.6-alpine3.7

	LABEL "com.github.actions.name"="Assign Reviewer"
	LABEL "com.github.actions.description"="Assign a PR reviewer when it does not have enough reviewers"
	LABEL "com.github.actions.icon"="edit"
	LABEL "com.github.actions.color"="blue"

	LABEL "repository"="https://github.com/matsub/try-github-actions"
	LABEL "maintainer"="matsub <[email protected]>"

matsub / Dockerfile

Created December 8, 2018 05:49

GitHub Actions

	FROM alpine:3.8

	LABEL "com.github.actions.name"="Hello World"
	LABEL "com.github.actions.description"="Write arguments to the standard output"
	LABEL "com.github.actions.icon"="anchor"

	LABEL "repository"="https://github.com/matsub/try-github-actions"
	LABEL "maintainer"="matsub <[email protected]>"

	ADD entrypoint.sh /entrypoint.sh

matsub / VolumeController.html

Created November 16, 2018 06:15

WebRTC+WebAudio

	<!doctype html>
	<input type="range" value="1" min="0" max="1" step="0.05">
	<script src="VolumeController.js"></script>
	<script>
	async function main() {
	const input = document.querySelector("input")
	const stream = await navigator.mediaDevices.getUserMedia({
	video: false,
	audio: true
	})

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