Function objectToQueryString

objectToQueryString(obj: Record<string, unknown>): string

Builds a URL-style query string from a plain object. Keys are emitted in insertion order. Array values are comma-joined.

Parameters

obj: Record<string, unknown>
Object whose entries become key=value pairs

Returns string

Query string without a leading ?

Example

objectToQueryString({ a: 1, b: [2, 3] }); // "a=1&b=2,3"
objectToQueryString({ foo: "bar" });      // "foo=bar"

Source

export function objectToQueryString(obj: Record<string, unknown>): string {
  let qs = '';
  for (const key of Object.keys(obj)) {
    const value = obj[key];
    const serialized = value == null ? '' : Array.isArray(value) ? value.join(',') : String(value);
    const part = `${key}=${serialized}`;
    qs = qs ? `${qs}&${part}` : part;
  }
  return qs;
}