Ember-I18n

Ember-I18n is a JavaScript translation library for Ember.js apps.
To localize a Ember.js app Ember-I18n is using a custom JSON format that you can either import and export manually on the dashboard or you can automate your Ember.js app translation process with the Applanga Localization CLI.

Website: https://github.com/jamesarosen/ember-i18n

File Extension
.js
CLI format key
ember_i18n_json_module
CLI Supported
true
SDK Supported
false
String Description Supported
false
Pluralization Supported
true

Example:

export default {
  "empty_string_key": "",
  "with_description_key": "This key has a description in some file-formats.",
  "with_line_break_key": "This key has a line break\nin it.",
  "nested_key": {
    "level_one_a": {
      "level_two": "A deeply nested key."
    },
    "level_one_b": "A nested key."
  },
  "plural_key": {
    "one": "Plural key one",
    "other": "Plural key other",
    "zero": "Plural key zero"
  },
  "array_key": [
    "first entry",
    "second entry",
    "third entry"
  ],
  "simple_key": "Most basic translation."
};