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techniq / axis.d.ts
Created December 30, 2018 15:45
@vx typings
declare module '@vx/axis' {
import React from 'react';
import { ScaleTime } from 'd3-scale';
interface Point {
x: number;
y: number;
interface AxisProps {
techniq / index.js
Last active April 20, 2017 19:48
Get calendar days
import dateFns from 'date-fns';
function getMonthDays(date) {
const startOfMonth = dateFns.startOfMonth(date);
const endOfMonth = dateFns.endOfMonth(date);
let prevMonthDaysNeeded = startOfMonth.getDay();
const prevMonthDays = prevMonthDaysNeeded ? dateFns.eachDay(
dateFns.subDays(startOfMonth, prevMonthDaysNeeded),
dateFns.subDays(startOfMonth, 1)

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techniq /
Last active February 18, 2016 16:07
Element prototype oddity in Chrome console

Element prototype oddity in Chrome console

Object.getPrototypeOf(document.createElementNS('html', 'div'))
  1. When I run this from a script on Chrome 48 (stable) or 50 (canary) I get the expected/desired HTMLDivElement (codepen)
  2. When I run this within the console on Chrome 48 I get Element (no HTMLDivElement or HTMLElement)
  3. When I run this within the console on Chrome 50 I get Node (no HTMLDivElement, HTMLElement, or Element)
techniq / examples.js
Last active August 29, 2015 14:24
Find all elements with a specific style attribute
techniq / fakeServer-test.js
Created June 14, 2015 02:05
Sinon AJAX tests
import JSData from 'js-data';
import DSHttpAdapter from 'js-data-http';
import sinon from 'sinon';
describe("fakeServer", function() {
beforeEach(function() {
this.server = sinon.fakeServer.create();
// this.server.autoRespond = true;
// this.respondImmediately = true;
techniq /
Last active August 29, 2015 14:22
Bash tips

Bash tips

Strip extension (source)

Example: foo.png => foo

for file in *.png; do
    echo $(basename $file .png)


techniq /
Last active November 26, 2020 15:32
Convert JSON boolean strings ("true"/"false") to boolean values

Convert undefined to false

JSON.parse(someVariable || false)


  • "true" => true
  • "false" => false
  • undefined => false
techniq /
Last active August 29, 2015 14:19
Gerber / KiCAD layer file extensions
KiCAD Layer Name Gerber Name Gerber Extension
F.Cu Top Layer .gtl
B.Cu Bottom Layer .gbl
F.Paste Top Paste .gtp
F.SilkS Top Overlay (silk screen) .gto
B.SilkS Bottom Overlay (silk screen) .gbo
F.Mask Top Solder Resist .gts
B.Mask Bottom Solder Resist .gbs
Edge.Cuts Edges (board outline) .gm1
techniq /
Last active July 13, 2019 01:39
curl reference

See response headers

curl -i localhost/api/foo

See request and response headers

curl -v localhost/api/foo

POST with string data