Eugene Lazutkin uhop

Brew Bundle Brewfile Tips

Copyright & License

Unless otherwise noted (either in this file or in a file's copyright section) the contents of this gist are Copyright ©️2020 by Christopher Allen, and are shared under spdx:Creative Commons Attribution Share Alike 4.0 International (CC-BY-SA-4.) open-source license.

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What

We need to setup an S3 bucket so we can use AWS JS SDK to upload files from a web application only for logged in users.

We already have a Cognito user pool, e.g., self-managed, and/or tied to a corporate SSO or social networks. Users may have different permissions depending on custom groups they are on. There is an app client, which is used to authenticate users in our web app.

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8" />
	<title>Multi-page print test</title>
	<!--
	Print to PDF, landscape, letter size, no margins, enable background graphics.
	Tested on Chrome.
	-->
	<style>

	const rep = (str, n) => {
	if (n < 1 \|\| !str) return '';
	let result = '';
	for (;;) {
	if (n & 1) {
	result += str;
	}
	n >>= 1;
	if (n < 1) break;
	str += str;

	'use strict';

	// from https://gist.github.com/uhop/d87365fac38ba6b8cbf0b890d0c2258e

	const noop = () => {};

	class DndMove {
	static supportedEvents = {
	pointerup: 'onPointerUp',
	pointermove: 'onPointerMove',

	// runs asynchronous operations in parallel, no more than a specified number at a time
	// it takes an array of functions, which return promises when invoked without arguments
	// modelled after Promise.all()

	const wrap = value => {
	if (typeof value == 'function') return value();
	if (value && typeof value.then == 'function') return value; // thenable
	return Promise.resolve(value);
	};

	<!DOCTYPE html>
	<html>
	<head>
	<title>DnD test bed - grouping</title>
	<link rel="stylesheet" href="./dnd.css" />
	</head>
	<body>
	<h1>DnD test bed - grouping</h1>
	<div class="container">
	<div class="item dnd-item dnd-handle">One</div>

	// https://gist.github.com/uhop/fbb7fc3606cbb2fa54e0ce4f9a200037
	// License: BSD-3
	// (c) 2023 Eugene Lazutkin

	import http from 'node:http';
	import fs from 'node:fs';
	import path from 'node:path';
	import process from 'node:process';

	const fsp = fs.promises;

	'use strict';

	class ListHead {
	constructor(head = null, next = 'next', prev = 'prev') {
	if (head instanceof ListHead) {
	({nextName: this.nextName, prevName: this.prevName, head: this.head} = head);
	return;
	}
	this.nextName = next;
	this.prevName = prev;

	let flag;

	const detectWebp = () => {
	if (typeof flag == 'boolean') return flag;
	const canvas = document.createElement('canvas');
	flag = !!(canvas.getContext && canvas.getContext('2d') && /^data:image\/webp;/.test(canvas.toDataURL('image/webp')));
	return flag;
	};

	export default detectWebp;

Eugene Lazutkin uhop

Brew Bundle Brewfile Tips

Copyright & License

Sponsor

What

How