const inputBody = '{
  "type": "object",
  "properties": {
    "customers": {
      "type": "array",
      "description": "List of customer MongoDB ObjectIds to export",
      "items": {
        "type": "string"
      }
    },
    "selectAll": {
      "type": "boolean",
      "description": "If true, export all customers regardless of the `customers` list"
    },
    "search": {
      "type": "object",
      "description": "Optional search filters",
      "properties": {
        "name": {
          "type": "string",
          "description": "Filter customers by name (optional)"
        }
      }
    }
  },
  "required": [
    "customers",
    "selectAll"
  ]
}';
const headers = {
  'Content-Type':'application/json',
  'Accept':'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
};

fetch('https://goldleaf.app/api/v1/customers/export',
{
  method: 'POST',
  body: inputBody,
  headers: headers
})
.then(function(res) {
    return res.json();
}).then(function(body) {
    console.log(body);
});