Power Assert with HTMLElement

1.md

test.js

import stringifier from 'stringifier'
import typeName from 'type-name'
import htmlElementStringify from 'html-element-stringify'
import powerAssert from 'power-assert'

const assert = powerAssert.customize({
  output: {
    stringify: stringifier({
      handlers: {
        'HTMLElement': function(acc, el) {
          acc.push(htmlElementStringify(el))
        }
      },

      typeFun: function(arg) {
        if (arg instanceof HTMLElement) {
          return 'HTMLElement'
        } else {
          return typeName(arg)
        }
      }
    })
  }
})

it('has "test" text', ()=> {
  const el = document.getElementById('playground')
  assert(el.textContent.includes('test'))
})