@ember-data/canary-features/index.js

module.exports = {
  name: require('./package').name,
  treeFor() {
    // Nested addons don't call isEnabled automatically,
    // So this ensures that we return empty trees whenever
    // we are not enabled.
    if (this.isEnabled()) {
      return this._super.treeFor.call(this, ...arguments);
    }
  },
  isEnabled() {
    if (this.__isEnabled !== undefined) {
      return this.__isEnabled;
    }
    const env = process.env.EMBER_ENV;

    this.__isEnabled = env !== 'production';

    return this.__isEnabled;
  },
};