Function serializeValue

packages/query-db-collection/src/serialization.ts:91–135

* Serializes special JavaScript values (undefined, NaN, Infinity, Date) * @internal

(value: unknown)

 * @internal
 */
function serializeValue(value: unknown): unknown {
  if (value === undefined) {
    return { __type: `undefined` }
  }

  if (typeof value === `number`) {
    if (Number.isNaN(value)) {
      return { __type: `nan` }
    }
    if (value === Number.POSITIVE_INFINITY) {
      return { __type: `infinity`, sign: 1 }
    }
    if (value === Number.NEGATIVE_INFINITY) {
      return { __type: `infinity`, sign: -1 }
    }
  }

  if (
    value === null ||
    typeof value === `string` ||
    typeof value === `number` ||
    typeof value === `boolean`
  ) {
    return value
  }

  if (value instanceof Date) {
    return { __type: `date`, value: value.toJSON() }
  }

  if (Array.isArray(value)) {
    return value.map((item) => serializeValue(item))
  }

  if (typeof value === `object`) {
    return Object.fromEntries(
      Object.entries(value as Record<string, unknown>).map(([key, val]) => [
        key,
        serializeValue(val),
      ]),
    )
  }

  return value
}