ember-compatibility-helpers

Provides flags for features in Ember, allowing you to write code that will work with whatever version the consuming application is on. This addon is intended to help addon authors write backwards/forwards compatibility code.

The flags are replaced at build time with boolean literals (true or false) by a Babel transform. When ran through a minifier (with dead code elimination) the entire section will be stripped, meaning that the section of code which is not used will not be added to production builds - zero cost compatibility!

Available Flags

import {
  HAS_UNDERSCORE_ACTIONS,
  HAS_MODERN_FACTORY_INJECTIONS,

  GTE_EMBER_1_13,
  IS_EMBER_2,
  IS_GLIMMER_2,

  SUPPORTS_FACTORY_FOR,
  SUPPORTS_GET_OWNER,
  SUPPORTS_SET_OWNER,
  SUPPORTS_NEW_COMPUTED,
  SUPPORTS_INVERSE_BLOCK,
  SUPPORTS_CLOSURE_ACTIONS,
  SUPPORTS_UNIQ_BY_COMPUTED
} from 'ember-compatibility-helpers';

More welcome, open an issue or a PR!

Example Usage

import Ember from 'ember';
import {
  SUPPORTS_NEW_COMPUTED
} from 'ember-compatibility-helpers';

const { computed, Component } = Ember

function fooMacro() {
  if (SUPPORTS_NEW_COMPUTED) {
    return computed({
      get() {
        return this.get('foo');
      },

      set(key, value) {
        this.set('foo', value);
        return value
      }
    });
  } else {
    return computed(function(key, value) {
      if (arguments.length === 2) {
        this.set('foo', value);
        return value;
      }

      return this.get('foo');
    })
  }
}

export default Component.extend({
  bar: fooMacro()
});

Installation

• git clone <repository-url> this repository
• cd ember-compatibility-helpers
• yarn

Running Tests

• npm test