observed attributes

brokenass.nim

import 
    dom, jsffi, jsconsole, macros, strutils,
    nes

type 
  WelcomeProps = ref object of JsObject
    prop1: cstring

type StringArray = array[0..1, cstring] 

class Welcome(HTMLElement):
    args: varargs[JsObject]
    constructorBody:
      this.html = bindLit(this)
    welcomeTempl = html_templ:
      h1: "Hello, ${this.getAttribute('name')}"
      h2: "This is an H2"
      input(type="password"): "Something"
    observedAttributes = proc(): StringArray =
      var r: StringArray
      r=["name","blue"]
      result r
    connectedCallback = proc(w: Welcome): Element =
      w.render()
    attributeChangedCallback = proc(name: JsObject, oldValue: JsObject, newValue: JsObject) =
      console.log("thing")
    render = proc(w: Welcome): Element =
      result = tagCustomElement(w.html, w.welcomeTempl, w)

customElements.define("h-welcome", WelcomeConstructor)