no-dyn-translation-keys.js

const jsLangs = (context, error) => node => node.arguments.map((arg) => {
  if (arg.type === 'Identifier') {
    context.report({
      node,
      messageId: error,
      data: { name: arg.name }
    });
  }
});

module.exports = {
  meta: {
    type: 'problem',
    messages: {
      avoidDynKeysInLangGet: 'Avoid using dynamic translation keys with lang.get({{name}})',
      avoidDynKeysInLangsGet: 'Avoid using dynamic translation keys with langs.get({{name}})',
      avoidDynKeysInLang: 'Avoid using dynamic translation keys with lang({{name}})'
    }
  },
  create(context) {
    return {
      "CallExpression[callee.object.name='lang'][callee.property.name='get']": jsLangs(context, 'avoidDynKeysInLangGet'),
      "CallExpression[callee.object.name='langs'][callee.property.name='get']": jsLangs(context, 'avoidDynKeysInLangsGet'),
      "CallExpression[callee.object.name='lang']": jsLangs(context, 'avoidDynKeysInLang')
    };
  }
};