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Luke Zehrung lzehrung

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  • ClearGov Inc.
  • South Bend, IN
  • 05:06 (UTC -04:00)
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@lzehrung
lzehrung / zod-enforce-type.ts
Created June 16, 2024 04:51
Enforce zod schema matches TS type
import z from 'zod';
// check that a zod schema conforms to a typescript type
function enforce<T>(schema: z.ZodSchema<T>): z.ZodSchema<T> {
return schema;
}
interface Test {
a: number;
b?: string;
@lzehrung
lzehrung / remove-node_modules-recurse.ps1
Created May 10, 2024 17:44
powershell remove node_modules recursively
Get-ChildItem -Path "." -Include "node_modules" -Recurse -Directory | Remove-Item -Recurse -Force
@lzehrung
lzehrung / test-express-timeout.ts
Last active July 14, 2023 14:40
Test express connect-timeout middleware
import express from 'express';
import requestTimeout from 'connect-timeout';
express()
.get(
'/long-running',
requestTimeout('3s', {
respond: false,
}),
(req, res) => {
@lzehrung
lzehrung / random-generators.ts
Last active May 17, 2023 04:37
https://www.typescriptlang.org/play?#code/MYewdgzgLgBAhgGwA4As4wLwwORwEbAAmApgGbYB0UIAqkksQE4DCcExAFAJQURIIBLKB2zYuAbgBQoSLEZwwhEAFsAcgFdleJphjdMAPhgBZOFBQVSCECEYdT5ivMUr9AKhgBGAAw9qAZShGATAAc24pGWgYZyVlABliKCgdLH0MI0RUOABtBwsrGzt8pwU493hkNAoEYjDzLgBdSPBo2JVmNHlgFMZddKMS9uV9I28KAFYYAH4YspVE5KZ9AC45lzVNbTsJSUlSdTAegXAYULqmM2IAeSgkDlr6lF0ANi4YAG9J…
const alpha = 'abcdef'.toUpperCase().split('');
const randomNumber = () => Math.floor(Math.random() * 10).toString();
const randomLetter = () => alpha[Math.floor(Math.random() * alpha.length)];
const randomCharacter = () => Math.random() > 0.5 ? randomLetter() : randomNumber();
function generateOtp(length = 6) {
return Array.from({ length }, randomCharacter).join('');
}
const pass = generateOtp();
@lzehrung
lzehrung / await-promiseall-vs-sequential.ts
Last active August 26, 2022 03:48
Demo of 'await Promise.all' vs sequential await - https://www.typescriptlang.org/play?#code/IYZwngdgxgBAZgV2gFwJYHsIwA4Cd0C2qIApgIIA2FAFAJQwDeAUDKzFJiMjACbDIkYAXhgQSAdxgARfiToBuFm2DjgqbgAV8RUgDpgVagG0lbNmMlbCxOdVwkQ6CgDcS9IQD5GpszFLIAFVQCEnQEZDsHJ1cAGhgAJgAGZNpFXzYAX1oYnzMLGCsdW3tHFzdhL2Z09P8gkLCIkuiSOKSUtOqsgF0fVJ8OCFKSXQp0AHNqAAMDChhkdHQAaxgAE…
// https://www.typescriptlang.org/play?#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
async function promiseAll() {
const date = new Date();
await Promise.all([
new Promise((resolve) => {
setTimeout(resolve, 2000);
}),
new Promise((resolve) => {
setTimeout(resolve, 2000);
@lzehrung
lzehrung / nextjs_nested_dynamic_routes.md
Last active May 19, 2022 02:46
next.js nested dynamic routes

url: /states/IN/counties/12345

folder structure:

/pages
  /states
    /[state]
      /counties
        [county].tsx
 index.tsx
@lzehrung
lzehrung / win-foreign-addr.ps1
Created May 6, 2022 20:58
open connections
netstat -p TCP -fan | Select -Skip 4 | ForEach {
$Properties = $_.Trim() -split '[\s]+'
[PSCustomObject]@{
'Proto'= $Properties[0]
'Local Address'= $Properties[1]
'Foreign Address'= $Properties[2]
'State'= $Properties[3]
}
} | Select -Expand 'Foreign Address'
@lzehrung
lzehrung / find-remove-files.ps1
Last active December 10, 2022 07:41
Find all child files modified in the last day and remove them (ignoring errors and confirm prompts)
Get-ChildItem -Recurse -Filter *.csv | Where-Object {$_.LastWriteTime -gt (Get-Date).AddDays(-1)} | Remove-Item -Force -Recurse -ErrorAction SilentlyContinue
@lzehrung
lzehrung / ts-propertyOf.ts
Last active July 19, 2022 22:15
type-checked property name string literals - https://www.typescriptlang.org/play?#code/PTAEEsDsGcAdwE4FMAmoBGBPUALALnrNAFwjQDGOkS4KSk6AhpQHQDm4e6A9twNbQW4bsDyZYSCgnCw8AWnK8+PfsEWQ89PMEiMAtkm4AzOdwkJGebghb49AGwBQj4ACpXoAKIwArslB4OEig0HjSkGygAG6M9j7B4NCgjNGxtKCwCGZICGKgugagxgHiwQAGACploK7AjkY+kOR4wpAZWbAAcvpIADwVAHwAFAVIxKB8SJjFFQCU46HhkQDejqDroMh…
// inspired by https://schneidenbach.gitbooks.io/typescript-cookbook/content/nameof-operator.html
/** Ensure the string value is a valid property name of type `T` */
function propName<T>(name: keyof T): string {
return name.toString();
}
/** Ensure the string value is a valid property name of instance of type `T`. */
function propOf<T>(instance: T, name: keyof T): string {
return propName<T>(name);
@lzehrung
lzehrung / get-process-using-port.md
Last active January 17, 2022 20:44
Get Process Using Port

Windows netstat -aon | findstr '8080'