Simple System.Text.Json serializer for CosmosDB.

SystemTextJsonCosmosSerializer.cs

using System.Text.Json;
using Microsoft.Azure.Cosmos;

namespace Common.Helpers;
public sealed class SystemTextJsonCosmosSerializer : CosmosSerializer
{
    private readonly JsonSerializerOptions options;

    public SystemTextJsonCosmosSerializer(JsonSerializerOptions options)
    {
        this.options = options;
    }

    public override T FromStream<T>(Stream stream)
    {
        var value = JsonSerializer.Deserialize<T>(stream, options);
        stream.Close();
        return value;
    }

    public override Stream ToStream<T>(T input)
    {
        var stream = new MemoryStream();
        JsonSerializer.Serialize(stream, input, options);
        stream.Position = 0;
        return stream;
    }
}