i18next.com/pages/translate/array/locales/en/translation.json

i18next website

{
  "arrayJoin": [
    "line1",
    "line2",
    "line3"
  ],
  "arrayJoinWithInterpolation": [
    "you",
    "can",
    "{{myVar}}"
  ],
  "arrayOfObjects": [
    { "name": "tom" },
    { "name": "steve" }
  ]
}