iwfan

function isArray(target) {
  return Object.prototype.toString.call(target) === "[object Array]";
}

function isClassSelector(selector) {
  return /^\.[\w-]+$/.test(selector);
}

function getSelector(array) {
  if (!array || !array.length) return;

iwfan

function separator(array, delimiter) {

    let len = array.length;

    const arr = new Array(len * 2 - 1).fill(0);

    return arr.reduceRight((p, _, i) => 
        [ 
            i % 2 === 0 
                ? array[--len] 

iwfan

function getBase64Image(img: HTMLImageElement) {
    const canvas = document.createElement('canvas')
    canvas.width = img.width
    canvas.height = img.height

    const ctx = canvas.getContext('2d')
    ctx.drawImage(img, 0, 0)

    const dataURL = canvas.toDataURL('image/png')
    return dataURL.replace(/^data:image\/(png|jpg);base64,/, '')

iwfan

function delegationEvent(
  type: string,
  target: HTMLElement,
  selector: string,
  callback: (
    this: HTMLElement | null,
    event: Event,
    element: HTMLElement | null
  ) => any
) {

iwfan

const DELIMITER = ","
const GROUP_QUOTES = ['"', "'"]

function parse(input: string) {
  const rows = input.trim().split(/\r?\n/)
  return rows.map((row, rowIndex) => {
    let [start, cursor, end] = [0, 0, row.length - 1]

    const fields: string[] = []