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Edit: /home/u523034047/domains/wasms.shop/public_html/varified/node_modules/qrcode/lib/renderer/canvas.js

const Utils = require('./utils')

function clearCanvas (ctx, canvas, size) {
  ctx.clearRect(0, 0, canvas.width, canvas.height)

if (!canvas.style) canvas.style = {}
  canvas.height = size
  canvas.width = size
  canvas.style.height = size + 'px'
  canvas.style.width = size + 'px'
}

function getCanvasElement () {
  try {
    return document.createElement('canvas')
  } catch (e) {
    throw new Error('You need to specify a canvas element')
  }
}

exports.render = function render (qrData, canvas, options) {
  let opts = options
  let canvasEl = canvas

if (typeof opts === 'undefined' && (!canvas || !canvas.getContext)) {
    opts = canvas
    canvas = undefined
  }

if (!canvas) {
    canvasEl = getCanvasElement()
  }

opts = Utils.getOptions(opts)
  const size = Utils.getImageWidth(qrData.modules.size, opts)

const ctx = canvasEl.getContext('2d')
  const image = ctx.createImageData(size, size)
  Utils.qrToImageData(image.data, qrData, opts)

clearCanvas(ctx, canvasEl, size)
  ctx.putImageData(image, 0, 0)

return canvasEl
}

exports.renderToDataURL = function renderToDataURL (qrData, canvas, options) {
  let opts = options

if (typeof opts === 'undefined' && (!canvas || !canvas.getContext)) {
    opts = canvas
    canvas = undefined
  }

if (!opts) opts = {}

const canvasEl = exports.render(qrData, canvas, opts)

const type = opts.type || 'image/png'
  const rendererOpts = opts.rendererOpts || {}

return canvasEl.toDataURL(type, rendererOpts.quality)
}

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