toJsonApiFilter.ts

/**
 * It converts object {"id": "1,2", "type": "someType", "value": "abc"} 
 * to filter[id]=1%2C2&filter[type]=someType&filter[value]=abc
 * */
export default function toJsonApiFilter(
  obj: Record<string, any> | undefined,
): string {
  const queryStringParts: string[] = [];

  if (!obj) {
    return '';
  }

  for (const key in obj) {
    const encodedKey = `filter[${key}]`;
    const encodedValue = encodeURIComponent(obj[key]);
    queryStringParts.push(`${encodedKey}=${encodedValue}`);
  }

  return queryStringParts.join('&');
}