Failed deserialize with System.Text.Json in .NET 10

[arteny]

Describe the bug

From your examples for System.Text.Json you are using DeserializeFromString method which is absent in .NET 10.
So it is failing to deserialize pure value for me now (not escaped):

JsonSerializer.Deserialize<T>("\"BetProExch\"")
Underlying type: System.String, Value = "BetProExch"
    Conversions: "[global::System.Text.Json.Serialization.JsonConverter(typeof(FancySourceSystemTextJsonConverter))]\r\n[global::System.ComponentModel.TypeConverter(typeof(FancySourceTypeConverter))]\r\n"
    UnderlyingType: "System.String"
    Value: "BetProExch"

JsonSerializer.Deserialize<T>("BetProExch")
'JsonSerializer.Deserialize<T>("BetProExch")' threw an exception of type 'System.Text.Json.JsonException'
    BytePositionInLine: 0
    Data: Count = 0
    HResult: -2146233088
    HelpLink: null
    InnerException: {"'B' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0."}
    LineNumber: 0
    Message: "'B' is an invalid start of a value. Path: $ | LineNumber: 0 | BytePositionInLine: 0."
    Path: "$"
    Source: "System.Text.Json"
    StackTrace: "   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, JsonReaderException ex)\r\n   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)\r\n   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)\r\n   at System.Text.Json.JsonSerializer.ReadFromSpan[TValue](ReadOnlySpan`1 utf8Json, JsonTypeInfo`1 jsonTypeInfo, Nullable`1 actualByteCount)\r\n   at System.Text.Json.JsonSerializer.ReadFromSpan[TValue](ReadOnlySpan`1 json, JsonTypeInfo`1 jsonTypeInfo)\r\n   at System.Text.Json.JsonSerializer.Deserialize[TValue](String json, JsonSerializerOptions options)"
    TargetSite: {Void ReThrowWithPath(System.Text.Json.ReadStack ByRef, System.Text.Json.JsonReaderException)}

Can you provide any workaround how I can do it?

Steps to reproduce

JsonSerializer.Deserialize(anyCorrectMemberValue)

Expected behaviour

No exception

[SteveDunn]

Hi, thanks for the bug report. I'll take a look shortly. I haven't touched this project in quite a while, so it may need some additional attention to make it up-to-date.