Repeat query params

repeat.ts

// Builds the query params in a way that extends arrays of params to be repeated instead of concatenated, e.g.
// { id: 1, foo: ['1', '2', '3'] } => /api?id=1&foo=1&foo=2&foo=3
const repeat = (url: string, params: object) => {
  const p = new URLSearchParams()
  Object.entries(params).forEach(([key, value]) => {
    if (Array.isArray(value)) {
      value.forEach((v) => {
        return p.append(key, v)
      })
    } else if (value) {
      p.append(key, value)
    }
  })
  const query = `${url}?${p.toString()}`
  return query
}

export { repeat }