John Johnson johnrjj

😶‍🌫️

probably writing code

currently: vibing

johnrjj / mosh-launcher.sh

Created June 30, 2025 13:02

mosh-server workaround on mac osx

	#!/bin/bash
	# File location: ~/bin/mosh-launcher.sh
	# --- Set the PATH for Homebrew ---
	eval "$(/opt/homebrew/bin/brew shellenv)"

	# --- Set the Locale for UTF-8 ---
	export LANG=en_US.UTF-8
	export LC_ALL=en_US.UTF-8

	# --- Execute the real mosh-server ---

johnrjj / backend.js

Created May 17, 2023 17:04

	import cors from 'cors';
	import express from 'express';
	import Session from 'express-session';
	import { generateNonce, SiweMessage } from 'siwe';

	const app = express();
	app.use(express.json());
	app.use(cors({
	origin: 'http://localhost:8080',
	credentials: true,

johnrjj / fill-with-native-token.tsx

Last active March 10, 2022 07:52

fill with native token with nftswap v3

	const MAKER_ASSET: SwappableAsset = {
	type: 'ERC20',
	tokenAddress: DAI_TOKEN_ADDRESS_MUMBAI_TESTNET,
	amount: '1000000000', // 1 DAI
	};
	const TAKER_ASSET: SwappableAsset = {
	type: 'ERC20',
	tokenAddress: WMATIC_TOKEN_ADDRESS_MUMBAI_TESTNET,
	amount: '1000000000', // 0.0000001 WMATIC
	};

johnrjj / 0x-api-ethers.ts

Created September 24, 2021 18:18

0x API swap w/ ethers.js

	import { Web3Provider } from '@ethersproject/providers'

	const provider = new Web3Provider(window.ethereum)

	const [address] = await window.ethereum.request({ method: 'eth_accounts' })

	const res = await fetch('https://api.0x.org/swap/v1/quote?buyAmount=1000000&buyToken=USDT&sellToken=USDC')

	const quote = await res.json()

johnrjj / useScrollProgress.tsx

Created June 10, 2020 16:13

useScrollProgress

	/* eslint-disable */
	import { RefObject, useEffect } from 'react';
	import { useRafState } from 'react-use';

	export interface State {
	x: number;
	y: number;
	totalHeight: number;
	}

johnrjj / App.js

Created February 20, 2019 19:42

Experiment React Stuff

	import React, { Component } from 'react';
	import { Experiment } from './experiment/Experiment';
	import { Case } from './experiment/Case';

	class App extends Component {
	render() {
	return (
	<div className="App">
	<Experiment>
	<Case when={(experimentMetadata) => experimentMetadata.foo === 'bar'}>

johnrjj / intersection-util.ts

Created February 11, 2019 18:53

marzullo algo

	// https://en.wikipedia.org/wiki/Marzullo%27s_algorithm
	const calculateIntersectingRanges = (ranges: Array<[number, number, any?]>, userOptions = {}) => {
	let START = 1;
	let END = -1;
	let points: Array<{
	value: number;
	rangeIndex: number;
	type: number;
	count?: number;
	index?: number;

johnrjj / dothething.jsx

Created February 11, 2019 18:23

app.js for tooltips


	class App extends Component {
	render() {
	return (
	<FullscreenContainer>
	<TooltipManager>
	<Canvas>
	<div>
	I'm, like, always trying to save the planet? Here's my chance. I was part of something special.
	Checkmate... Life finds a way.

johnrjj / pluck.ts

Created December 28, 2016 01:10

typescript mapped types

	// Takes an array of objects and a property to 'pluck' or 'grab'

	// > pluck([{k1: 1, k2: 3}, {k1: 5, k2: 1}], 'k1')
	// > [1, 5]

	/*
	T = OBJECT a.k.a. ({ k1: val1, k2: val2})
	K = property
	*/
	const pluck = <T, K extends keyof T>(objs: T[], key: K): T[K][] => {

johnrjj / jira-oauth.js

Last active March 19, 2017 19:16

Jira Request w/ OAuth (After OAuth Dance)

	var request = require('request');

	// After getting access tokens...
	// Don't worry these aren't valid tokens...
	const oauth = {
	consumer_key: 'test',
	private_key: `-----BEGIN RSA PRIVATE KEY-----
	AoGBAKZ4sQJ8rglpGX02SdeMF570vKVXtxf6jhl5TveGYmRsSvFpB9Kexa26YMqn
	oPUBYTmITIsfWOXv/SG+fWrBUEDHqqREIzH6XsR6US5JCKZkwF5PpTRnYwIDAQAB
	-----END RSA PRIVATE KEY-----`,