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utils.js
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utils.js
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const { JSDOM } = require('jsdom')
const urlencode = require('urlencode')
const striptags = require('striptags')
const innerText = element => element.textContent
const innerHTML = element => element.innerHTML
const replaceBrTags = innerHTML => innerHTML.replace(/<br>/gi, '\n')
const capitalize = string => string[0].toUpperCase() + string.slice(1)
const toLowerCase = string => string.toLowerCase()
const toUnixTimestamp = string => new Date(string).getTime()
const toNumber = string => parseInt(string, 10)
const isAlphaNumeric = char => Boolean(char.match(/[a-zA-Z0-9]/))
const stripTags = string => striptags(string)
const encode = string => {
return string
.split('')
.map(char => {
if (isAlphaNumeric(char)) return char
if (char === ' ') return '+'
if (char === '.') return '.'
return urlencode(char, 'iso-8859-1')
})
.join('')
}
const getRating = (upvotes, downvotes, options = {}) => {
const totalVotes = upvotes + downvotes
if (options.percentage) return parseFloat((upvotes / totalVotes * 100).toFixed(2))
return Math.round(upvotes / totalVotes * 10 / 2)
}
const createFormData = data => {
return Object.entries(data).reduce((acc, [key, value]) => {
return acc + `${key}=${encode(value)}&`
}, '').slice(0, -1)
}
const createDom = html => {
const dom = new JSDOM(html)
const window = dom.window
const document = window.document
const getElementsArray = (selector, element) => Array.from((element || document).querySelectorAll(selector))
return { dom, window, document, getElementsArray }
}
module.exports = {
innerText,
innerHTML,
replaceBrTags,
capitalize,
toLowerCase,
toUnixTimestamp,
toNumber,
isAlphaNumeric,
encode,
getRating,
createFormData,
createDom,
stripTags
}