nwb/lib/preact/renderShim.js

A toolkit for React, Preact & Inferno apps, React libraries and other npm modules for the web, with no configuration (until you need it)

"use strict";

/* global NWB_QUICK_MOUNT_ID */
// Enable use of Preact Devtools
if (process.env.NODE_ENV === 'development') {
  require('preact/debug');
}

let Preact = require('preact');

let parent = document.getElementById(NWB_QUICK_MOUNT_ID);
let root = parent.firstElementChild;
let vnode = null;

function renderEntry(exported) {
  if (exported.default) {
    exported = exported.default;
  } // Assumptions: the entry module either renders the app itself or exports a
  // Preact component (which is either a function or class) or VNode (which has
  // a children property).


  if (Object.prototype.toString.call(exported) === '[object Function]') {
    vnode = Preact.h(exported);
  } else if (exported.children) {
    vnode = exported;
  } else {
    // Assumption: the entry module rendered the app
    return;
  }

  root = Preact.render(vnode, parent, root);
}

function init() {
  renderEntry(require('nwb-quick-entry'));
}

if (module.hot) {
  module.hot.accept('nwb-quick-entry', init);
}

init();