arimariojesus’s gists

arimariojesus / properiesToArray.ts

Created September 11, 2022 18:54

	export const isObject = (val: unknown): boolean =>
	val instanceof Object && !Array.isArray(val);

	export const propertiesToArray = (obj: object): string[] => {
	const addDelimiter = (a: string, b: string) => (a ? `${a}.${b}` : b);

	const paths = (obj: Record<string, any> = {}, head = ''): string[] => {
	return Object.entries(obj).reduce<string[]>((product, [key, value]) => {
	const fullPath = addDelimiter(head, key);
	return isObject(value)

arimariojesus / getDeepValue.ts

Last active October 9, 2022 23:16

Get a deep property of an object. Receive a path in the form of a dot-separated string which sould ignore any value that is not a valid property in the object tree.

	export const getDeepValue = <
	T extends Record<string, any>,
	K extends string = string,
	>(
	obj: T,
	path: DeepKey<T, K> \| DeepKey<T, K>[],
	): DeepReturn<T, K> => {
	const paths = Array.isArray(path) ? path : path.split('.');
	return paths.reduce<DeepReturn<T, K>>((acc, curr) => {
	return acc[curr];

arimariojesus / deepReturn.ts

Last active October 9, 2022 23:17

	type DeepReturn<T, K extends string = string> = K extends keyof T
	? T[K]
	: K extends `${infer TKey}.${infer Rest}`
	? TKey extends keyof T
	? DeepReturn<Exclude<T[TKey], undefined>, Rest>
	: undefined
	: undefined;

arimariojesus / deepKey.ts

Last active October 9, 2022 23:17

	type ValidValues = string \| number \| Record<string, any> \| Array<any> \| undefined \| null;

	type DeepKey<T extends Record<string, any>, K extends string = string> = K extends keyof T
	? T[K] extends ValidValues
	? K
	: never
	: K extends `${infer TKey}.${infer Rest}`
	? T[TKey] extends ValidValues
	? DeepKey<Exclude<T[TKey], undefined>, Rest> extends never
	? never

arimariojesus / decodeResponse.js

Last active January 25, 2024 12:15

Decode a xml fetch response with ISO-8859-1 codification to UTF-8

	const decodedResponse = await fetch('https://www.anysite.rss.xml', {
	headers: {
	'Content-Type': 'text/xml;charset=ISO-8859-1',
	},
	})
	.then(r => r.arrayBuffer()) // resolve the response stream for buffer
	.then(d => {
	const dataView = new DataView(d); // creates a DataView object representing the buffer data
	const isoDecoder = new TextDecoder('ISO-8859-1'); // creates an instance of the our decoder
	const decodedString = isoDecoder.decode(dataView); // so we pass the stream of bytes for the decoder do its job

arimariojesus / customHooks.jsx

Last active April 8, 2021 02:58

setInterval declarative - custom hook

	import { useEffect, useRef, useState } from 'react';

	const useMyHook = (cb, delay = 1000) => {
	const savedCb = useRef();

	useEffect(() => {
	savedCb.current = cb;
	}, [cb]);

	useEffect(() => {

arimariojesus / ValidateCPF.js

Last active May 3, 2021 22:31

Objeto para validação de CPF

	class CPF {
	static #filter(cpfRaw) {
	if(typeof cpfRaw !== 'string') return;
	return cpfRaw.replace(/\D+/g, '');
	}

	static #isSequence(value) {
	const sequence = value[0].repeat(value.length);
	return sequence === value;
	}

Ari Jesus arimariojesus