converse-built/node_modules/@glimmer/util/dist/commonjs/es5/lib/untouchable-this.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = buildUntouchableThis;

var _env = require("@glimmer/env");

var _platformUtils = require("./platform-utils");

function buildUntouchableThis(source) {
  var context = null;

  if (_env.DEBUG && _platformUtils.HAS_NATIVE_PROXY) {
    var assertOnProperty = function assertOnProperty(property) {
      throw new Error("You accessed `this." + String(property) + "` from a function passed to the " + source + ", but the function itself was not bound to a valid `this` context. Consider updating to use a bound function (for instance, use an arrow function, `() => {}`).");
    };

    context = new Proxy({}, {
      get: function get(_target, property) {
        assertOnProperty(property);
      },
      set: function set(_target, property) {
        assertOnProperty(property);
        return false;
      },
      has: function has(_target, property) {
        assertOnProperty(property);
        return false;
      }
    });
  }

  return context;
}
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