discourse/app/assets/javascripts/handlebars-shim.js

// allow us to import this as a module
if (typeof define !== "undefined") {
  define("handlebars", ["exports"], function(__exports__) {
    // It might not be defined server side, which is OK for pretty-text
    if (typeof Handlebars !== "undefined") {
      __exports__.default = Handlebars;
    }
  });
}