peter

// See: https://medium.com/@promentol/cryptography-for-javascript-node-js-developers-part-1-hash-function-86d119c7304

function hash(data, digest = 'hex') {
  return require('crypto').createHash('sha256').update(data).digest(digest)
}

// ('foo', 10) => 6
// ('bar', 10) => 6
// ('zz', 10) => 2
// ('foo', 6) => 2

peter

const fs = require('fs')

module.exports = {
  writeTerraform,
  generateMain,
}

// Templates are just terraform (.tf files) with the following kinds of interpolations:
// 1. Variables embedded in a string: "terraform-states-<id>"
// 2. Variables occupying an entire string: "<apiId>".

peter

function isObject (value) {
  return value != null && typeof value === 'object' && value.constructor === Object
}

//////////////////////////////////////////
// GENERATOR
//////////////////////////////////////////

function * traverseObj (value, path = []) {

peter

#!/bin/bash

uname -a
if test -f "/etc/os-release"; then
    cat /etc/os-release
fi
if command -v lsb_release; then
    lsb_release -a
fi
cat /proc/version

peter

// The use case is that you are developing a web app locally that makes Ajax requests to some external
// API that doesn't have sufficiently permissive CORS headers so your requests fail. The solution is to point the app
// to this local proxy which will allow CORS.
const http = require('http')
const axios = require('axios')

const HOSTNAME = '127.0.0.1'
const PROXY_BASE_URL = process.env.PROXY_BASE_URL;
const PORT = process.env.PORT || 9999

peter

/* eslint-disable no-plusplus */
import crypto from 'crypto';

function parse(header: string | null): string | null {
  const match = (header || '').match(/^Basic (\S{3,300})$/);
  return match && Buffer.from(match[1], 'base64').toString();
}

function isEqual(s1: string | null, s2: string | null): boolean {
  return (

peter

import crypto from 'crypto';

export function basicAuthMiddleware({ name, pass }: any): Function {
  const auth = `Basic ${Buffer.from([name, pass].join(':')).toString(
    'base64'
  )}`;
  return async (ctx: any, next: any): Promise<any> => {
    const header = ctx.request.get('Authorization');
    const headerMatches =
      header &&

peter

How to Convert a Node.js App to TypeScript

Here are examples of steps taken to convert a server rendered web app to TypeScript. In my experience you can expect a conversion like this to take a day or a couple of days for a small project (a couple of thousand lines of code).

Install packages

Install Typescript and types for node and dependencies:

npm install typescript --save-dev

peter

Open Terminal Tabs on Mac and Run Commands

Dependencies

Requires Node.js and ttab

npm install ttab -g

peter

[
    {
        "key": "cmd+t",
        "command": "workbench.action.quickOpen"
    },
    {
        "key": "cmd+p",
        "command": "-workbench.action.quickOpen"
    }
]