gustavoguichard

/**
 * It merges multiple HeadersInit objects into a single Headers object
 * @param entries Any number of HeadersInit objects
 * @returns a new Headers object with the merged headers
 */
function mergeHeaders(...sources: HeadersInit[]) {
  let result = new Headers()

  for (let headersInit of sources) {
    let headers = new Headers(headersInit)

gustavoguichard

type Specify<T> = T extends any ? (k: T) => void : never

// Real intersection: UnionToIntersection<`c${string}` | 'car'> will become `c${string}`
type UnionToIntersection<T> = Specify<T> extends (a: infer A) => void ? A : never;

// Transforms 'a' | 'b' into ((f: "a") => void) & ((f: "b") => void)
type UnionToOverloads<U> = UnionToIntersection<Specify<U>>;

// Still figuring out why this happens
// ((f: "a") => void) & ((f: "b") => void) will become "b"

gustavoguichard

type Specify<T> = T extends any ? (k: T) => void : never

// Real intersection: UnionToIntersection<`c${string}` | 'car'> will become `c${string}`
type UnionToIntersection<T> = Specify<T> extends (a: infer A) => void ? A : never;

// Transforms 'a' | 'b' into ((f: "a") => void) & ((f: "b") => void)
type UnionToOverloads<U> = UnionToIntersection<Specify<U>>;

// Still figuring out why this happens
// ((f: "a") => void) & ((f: "b") => void) will become "b"

gustavoguichard

module.exports = {
  theme: {
    extend: {
      // ...
    },
  },
  plugins: [
    function ({ addVariant }) {
      addVariant('children', '& > *')
    },

gustavoguichard

const controller = new AbortController()
const toBeAborted = fetch('/', { signal: controller.signal })
controller.abort()

gustavoguichard

const res = await fetch('/')
const reader = res.body.getReader()
const data = await reader.read()
new TextDecoder().decode(data.value)

while(!data.done) {
  console.log(new TextDecoder().decode(data.value))
  data = await reader.read()
}

gustavoguichard

import { useState, useEffect } from 'react'

function setState(newState, updateContext) {
  this.state = { ...this.state, ...newState }
  this.listeners &&
    this.listeners.forEach(([context, listener]) => {
      updateContext === context && listener(this.state)
    })
}

gustavoguichard

ruby -F, -ane \
'puts $F[15].gsub(/"/, "") unless $F[15] !~ /\w+@\w+\.\w{2,5}/' \
~/Desktop/cadastros.csv > emails.txt

gustavoguichard

import compact from 'lodash/compact'
import get from 'lodash/get'
import head from 'lodash/head'
import orderBy from 'lodash/orderBy'

const getFirstValue = (el, path) => {
  const paths = path.split('|')
  const values = paths.map(path => get(el, path))
  return head(compact(values))
}

gustavoguichard

const useOpenExternalLinksInNewTab = (el = typeof document === 'undefined' ? null : document) => {
  useEffect(() => {
    if (el && typeof window !== 'undefined') {
      const links = el.querySelectorAll(
        `a[href*="//"]:not([href*="${window.location.host}"])`,
      )
      links.forEach((link) => {
        link.setAttribute('target', '_blank')
        link.setAttribute('rel', 'noopener')
      })