OSUblake

js.compile: "es2018"
# build name | browser capabilities
  "2018-psm" | ["es2018", "push", "serviceworker", "modules"]
   "2018-ps" | ["es2018", "push", "serviceworker"]
   "2018-pm" | ["es2018", "push", "modules"]
   "2018-sm" | ["es2018", "serviceworker", "modules"]
    "2018-s" | ["es2018", "serviceworker"]
    "2018-m" | ["es2018", "modules"]
    "2018-p" | ["es2018", "push",]
    "2018-0" | ["es2018"]

OSUblake

import { LitElement, html } from '../../node_modules/@polymer/lit-element/lit-element.js';
import {ifDefined} from '../../node_modules/lit-html/directives/if-defined.js';
import {classMap} from '../../node_modules/lit-html/directives/class-map.js';
import {render} from '../../node_modules/lit-html/lib/shady-render.js';

let inputCounter = 0;

class CustomInput extends LitElement {
  static get properties() {
    return {