SOURCE

const unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/
const attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/
const dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+?\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/
const ncname = `[a-zA-Z_][\\-\\.0-9_a-zA-Z${unicodeRegExp.source}]*`
const qnameCapture = `((?:${ncname}\\:)?${ncname})`
const startTagOpen = new RegExp(`^<${qnameCapture}`)
const startTagClose = /^\s*(\/?)>/
const endTag = new RegExp(`^<\\/${qnameCapture}[^>]*>`)

let html = `<div id="ggYNEeGI">
            <u-image :src="src" :mode="mode" :width="width" :height="height" :shape="shape"></u-image>
        </div>`
let index=  0
  function advance(n) {
    index += n
    html = html.substring(n)
  }
  function parseStartTag() {
    const start = html.match(startTagOpen)
    if (start) {
      const match = {
        tagName: start[1],
        attrs: [],
        start: index
      }
      advance(start[0].length)
      let end, attr
      while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
        attr.start = index
        advance(attr[0].length)
        attr.end = index
        match.attrs.push(attr)
      }
      if (end) {
        match.unarySlash = end[1]
        advance(end[0].length)
        match.end = index
        return match
      }
    }
  }
  console.log(parseStartTag())