dobernike’s gists

dobernike / JS import regexp

Last active August 3, 2022 06:24

dobernike / flattenObj.ts

Last active October 30, 2021 20:55

flatten object typescript and ramda

	import { chain, fromPairs, map, toPairs, type } from 'ramda'

	export const flattenObj = (obj: Record<string \| number, string>) => {
	const go = (obj_: Record<string \| number, string>): any[] =>
	chain(([k, v]: [k: string, v: Record<string \| number, string>]) => {
	if (type(v) === 'Object' \|\| type(v) === 'Array') {
	return map(([k_, v_]: [k_: string, v_: string]) => [`${k}.${k_}`, v_], go(v))
	}
	return [[k, v]]
	}, toPairs(obj_))

dobernike / babel-plugin-to-transform-createSelector.js

Last active September 16, 2021 15:30

Visualizing react-redux performance bottlenecks with babel

	'use strict';
	Object.defineProperty(exports, '__esModule', { value: true });

	exports.default = function babelPluginTransformCreateSelector({ types: t }) {
	// Add the variable name as the first argument to the createSelector function
	function addNameArgument(body, name) {
	body.arguments.unshift(t.stringLiteral(name));
	array.push(name);
	}
	// Find and add the variable name as the first argument to the createSelector function in Arrow Function Expression

dobernike / Encoding UTF8 ⇢ base64 and Decoding base64 ⇢ UTF8

Created June 23, 2021 20:02

Encoding UTF8 ⇢ base64 and Decoding base64 ⇢ UTF8

	// btoa() only support characters from String.fromCodePoint(0) up to String.fromCodePoint(255).
	// For Base64 characters with a code point 256 or higher you need to encode/decode these before and after.
	// “convert string to Base64” usually means “encode string as UTF-8 and encode the bytes as Base64”, and that's exactly what btoa(unescape(encodeURIComponent(str))) does.
	// Without unescape you don't get a Base64 representation of a UTF-8 encoded string.
	// https://stackoverflow.com/questions/30631927/converting-to-base64-in-javascript-without-deprecated-escape-call
	// The MDN article originally suggested using unescape and escape to solve the Character Out Of Range exception problem, but they have since been deprecated.
	// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/unescape
	// solutions from https://stackoverflow.com/questions/30106476/using-javascripts-atob-to-decode-base64-doesnt-properly-decode-utf-8-strings

	// Encoding UTF8 ⇢ base64

dobernike / useAsyncEffect react typescript

Created December 26, 2020 10:35

	import { DependencyList, useEffect } from 'react'

	type Effect<T> = (isMounted: () => boolean) => T \| PromiseLike<T>
	type Destroy<T> = DependencyList \| ((result: T) => void)

	function hasDestroy<T>(destroy?: Destroy<T>): destroy is (result: T) => void {
	return typeof destroy === 'function'
	}

	export function useAsyncEffect<T = unknown>(

dobernike / burger and close

Created February 4, 2019 12:53

dobernike / start css

Last active January 23, 2019 18:39

dobernike / triangle

Created January 23, 2019 07:30

Pavel Fediushin dobernike