Add net60 target

Jint/EsprimaExtensions.cs

@@ -158,7 +158,7 @@ internal static string LiteralKeyToString(Literal literal)
                 return TypeConverter.ToString(d);
             }
 
-            return literal.Value as string ?? Convert.ToString(literal.Value, provider: null);
+            return literal.Value as string ?? Convert.ToString(literal.Value, provider: null) ?? "";
         }
 
         internal static void GetBoundNames(this VariableDeclaration variableDeclaration, List<string> target)

Jint/Extensions/ReflectionExtensions.cs

@@ -127,7 +127,7 @@ public static object AsNumberOfType(this double d, TypeCode type)
         }
 
         public static bool TryConvertViaTypeCoercion(
-            Type memberType,
+            Type? memberType,
             ValueCoercionType valueCoercionType,
             JsValue value,
             [NotNullWhen(true)] out object? converted)
@@ -155,7 +155,7 @@ public static object AsNumberOfType(this double d, TypeCode type)
                 return true;
             }
 
-            if (memberType.IsClrNumericCoercible() && (valueCoercionType & ValueCoercionType.Number) != 0)
+            if (memberType is not null && memberType.IsClrNumericCoercible() && (valueCoercionType & ValueCoercionType.Number) != 0)
             {
                 // we know how to print out correct string presentation for primitives
                 // that are non-null and non-undefined

Jint/Jint.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <NeutralLanguage>en-US</NeutralLanguage>
-    <TargetFrameworks>net462;netstandard2.0;netstandard2.1</TargetFrameworks>
+    <TargetFrameworks>net462;netstandard2.0;netstandard2.1;net6.0</TargetFrameworks>
     <AssemblyOriginatorKeyFile>Jint.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <LangVersion>latest</LangVersion>

Jint/Key.cs

@@ -53,7 +53,7 @@ public bool Equals(Key other)
             return HashCode == other.HashCode && Name == other.Name;
         }
 
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             return obj is Key other && Equals(other);
         }

Jint/Native/Argument/ArgumentsInstance.cs

@@ -73,7 +73,7 @@ protected override void Initialize()
                 ObjectInstance? map = null;
                 if (args.Length > 0)
                 {
-                    var mappedNamed = _mappedNamed.Value;
+                    var mappedNamed = _mappedNamed.Value!;
                     mappedNamed.Clear();
 
                     map = Engine.Realm.Intrinsics.Object.Construct(Arguments.Empty);

Jint/Native/Array/ArrayInstance.cs

@@ -944,7 +944,14 @@ private void ConvertToSparse()
 
         internal void EnsureCapacity(uint capacity, bool force = false)
         {
-            if (!force && (capacity > MaxDenseArrayLength || _dense is null || capacity <= (uint) _dense.Length))
+            var dense = _dense;
+
+            if (dense is null)
+            {
+                return;
+            }
+
+            if (!force && (capacity > MaxDenseArrayLength || capacity <= (uint) dense.Length))
             {
                 return;
             }
@@ -956,7 +963,7 @@ internal void EnsureCapacity(uint capacity, bool force = false)
 
             // need to grow
             var newArray = new object[capacity];
-            System.Array.Copy(_dense, newArray, _dense!.Length);
+            System.Array.Copy(dense, newArray, dense.Length);
             _dense = newArray;
             _isObjectArray = true;
         }

Jint/Native/Array/ArrayPrototype.cs

@@ -1761,7 +1761,7 @@ private ArrayComparer(Engine? engine, ICallable? compare)
                 _compare = compare;
             }
 
-            public int Compare(JsValue x, JsValue y)
+            public int Compare(JsValue? x, JsValue? y)
             {
                 var xIsNull = ReferenceEquals(x, null);
                 var yIsNull = ReferenceEquals(y, null);

Jint/Native/ArrayBuffer/ArrayBufferInstance.cs

@@ -64,8 +64,9 @@ internal void DetachArrayBuffer(JsValue? key = null)
         {
             var targetBuffer = constructor.AllocateArrayBuffer(_engine.Realm.Intrinsics.ArrayBuffer, srcLength);
             AssertNotDetached();
-            var srcBlock = _arrayBufferData;
-            var targetBlock = targetBuffer.ArrayBufferData;
+
+            var srcBlock = _arrayBufferData!;
+            var targetBlock = targetBuffer.ArrayBufferData!;
 
             // TODO SharedArrayBuffer would use this
             //CopyDataBlockBytes(targetBlock, 0, srcBlock, srcByteOffset, srcLength).
@@ -202,7 +203,7 @@ internal TypedArrayValue RawBytesToNumeric(TypedArrayElementType type, int byteI
             ArrayBufferOrder order,
             bool? isLittleEndian = null)
         {
-            var block = _arrayBufferData;
+            var block = _arrayBufferData!;
             if (!IsSharedArrayBuffer)
             {
                 // If isLittleEndian is not present, set isLittleEndian to the value of the [[LittleEndian]] field of the surrounding agent's Agent Record.

Jint/Native/ArrayBuffer/ArrayBufferPrototype.cs

@@ -165,7 +165,7 @@ private JsValue Slice(JsValue thisObj, JsValue[] arguments)
 
             var fromBuf = o.ArrayBufferData;
             var toBuf = bufferInstance.ArrayBufferData;
-            System.Array.Copy(fromBuf, first, toBuf, 0, newLen);
+            System.Array.Copy(fromBuf!, first, toBuf!, 0, newLen);
             return bufferInstance;
         }
     }

Jint/Native/Error/ErrorInstance.cs

@@ -31,6 +31,6 @@ internal void InstallErrorCause(JsValue options)
 
     public override string ToString()
     {
-        return Engine.Realm.Intrinsics.Error.PrototypeObject.ToString(this, Arguments.Empty).ToObject().ToString();
+        return Engine.Realm.Intrinsics.Error.PrototypeObject.ToString(this, Arguments.Empty).ToObject().ToString() ?? "";
     }
 }

Jint/Native/JsBigInt.cs

@@ -95,7 +95,7 @@ public override bool IsLooselyEqual(JsValue value)
         return false;
     }
 
-    public override bool Equals(object other)
+    public override bool Equals(object? other)
     {
         return Equals(other as JsBigInt);
     }

Jint/Native/JsString.cs

@@ -290,7 +290,7 @@ public override bool IsLooselyEqual(JsValue value)
         return base.IsLooselyEqual(value);
     }
 
-    public sealed override bool Equals(object obj)
+    public sealed override bool Equals(object? obj)
     {
         return Equals(obj as JsString);
     }

Jint/Native/JsValue.cs

@@ -337,7 +337,7 @@ public virtual bool IsLooselyEqual(JsValue value)
         /// <summary>
         /// Strict equality.
         /// </summary>
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             return Equals(obj as JsValue);
         }

Jint/Native/SameValueZeroComparer.cs

@@ -6,7 +6,7 @@ internal sealed class SameValueZeroComparer : IEqualityComparer<JsValue>
 {
     public static readonly SameValueZeroComparer Instance = new();
 
-    bool IEqualityComparer<JsValue>.Equals(JsValue x, JsValue y)
+    bool IEqualityComparer<JsValue>.Equals(JsValue? x, JsValue? y)
     {
         return Equals(x, y);
     }
@@ -17,7 +17,7 @@ public int GetHashCode(JsValue obj)
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    internal static bool Equals(JsValue x, JsValue y)
+    internal static bool Equals(JsValue? x, JsValue? y)
     {
         return x == y || x is JsNumber xNum && y is JsNumber yNum && double.IsNaN(xNum._value) && double.IsNaN(yNum._value);
     }

Jint/Native/String/StringExecutionContext.cs

@@ -16,10 +16,10 @@ private StringExecutionContext()
         {
         }
 
-        public List<string> SplitSegmentList => _splitSegmentList = _splitSegmentList ?? new List<string>();
+        public List<string> SplitSegmentList => _splitSegmentList ??= new List<string>();
 
-        public string[] SplitArray1 => _splitArray1 = _splitArray1 ?? new string[1];
+        public string[] SplitArray1 => _splitArray1 ??= new string[1];
 
-        public static StringExecutionContext Current => _executionContext.Value;
+        public static StringExecutionContext Current => _executionContext.Value!;
     }
 }

Jint/Native/TypedArray/IntrinsicTypedArrayPrototype.cs

@@ -1435,8 +1435,28 @@ private TypedArrayComparer(ArrayBufferInstance buffer, ICallable? compare)
                 _compare = compare;
             }
 
-            public int Compare(JsValue x, JsValue y)
+            public int Compare(JsValue? x, JsValue? y)
             {
+                if (x is null && y is null)
+                {
+                    return 0;
+                }
+
+                if (x is not null && y is null)
+                {
+                    return 1;
+                }
+
+                if (x is null)
+                {
+                    return -1;
+                }
+
+                if (y is null)
+                {
+                    return 1;
+                }
+
                 if (_compare is not null)
                 {
                     _comparableArray[0] = x;

Jint/Native/TypedArray/TypedArrayValue.cs

@@ -66,86 +66,86 @@ public TypeCode GetTypeCode()
         return default;
     }
 
-    public bool ToBoolean(IFormatProvider provider)
+    public bool ToBoolean(IFormatProvider? provider)
     {
         ExceptionHelper.ThrowNotImplementedException();
         return default;
     }
 
-    public char ToChar(IFormatProvider provider)
+    public char ToChar(IFormatProvider? provider)
     {
         ExceptionHelper.ThrowNotImplementedException();
         return default;
     }
 
-    public sbyte ToSByte(IFormatProvider provider)
+    public sbyte ToSByte(IFormatProvider? provider)
     {
         return (sbyte) DoubleValue;
     }
 
-    public byte ToByte(IFormatProvider provider)
+    public byte ToByte(IFormatProvider? provider)
     {
         return (byte) DoubleValue;
     }
 
-    public short ToInt16(IFormatProvider provider)
+    public short ToInt16(IFormatProvider? provider)
     {
         return (short) DoubleValue;
     }
 
-    public ushort ToUInt16(IFormatProvider provider)
+    public ushort ToUInt16(IFormatProvider? provider)
     {
         return (ushort) DoubleValue;
     }
 
-    public int ToInt32(IFormatProvider provider)
+    public int ToInt32(IFormatProvider? provider)
     {
         return (int) DoubleValue;
     }
 
-    public uint ToUInt32(IFormatProvider provider)
+    public uint ToUInt32(IFormatProvider? provider)
     {
         return (uint) DoubleValue;
     }
 
-    public long ToInt64(IFormatProvider provider)
+    public long ToInt64(IFormatProvider? provider)
     {
         return (long) BigInteger;
     }
 
-    public ulong ToUInt64(IFormatProvider provider)
+    public ulong ToUInt64(IFormatProvider? provider)
     {
         return (ulong) BigInteger;
     }
 
-    public float ToSingle(IFormatProvider provider)
+    public float ToSingle(IFormatProvider? provider)
     {
         return (float) DoubleValue;
     }
 
-    public double ToDouble(IFormatProvider provider)
+    public double ToDouble(IFormatProvider? provider)
     {
         return DoubleValue;
     }
 
-    public decimal ToDecimal(IFormatProvider provider)
+    public decimal ToDecimal(IFormatProvider? provider)
     {
         return (decimal) DoubleValue;
     }
 
-    public DateTime ToDateTime(IFormatProvider provider)
+    public DateTime ToDateTime(IFormatProvider? provider)
     {
         ExceptionHelper.ThrowNotImplementedException();
         return default;
     }
 
-    public string ToString(IFormatProvider provider)
+    public string ToString(IFormatProvider? provider)
     {
         ExceptionHelper.ThrowNotImplementedException();
         return default;
     }
 
-    public object ToType(Type conversionType, IFormatProvider provider)
+    public object ToType(Type conversionType, IFormatProvider? provider)
     {
         if (conversionType == typeof(BigInteger) && Type == Types.BigInt)
         {

Jint/Options.cs

@@ -319,7 +319,7 @@ public class InteropOptions
         /// <summary>
         /// Strategy to create a CLR object to hold converted <see cref="ObjectInstance"/>.
         /// </summary>
-        public Func<ObjectInstance, IDictionary<string, object>> CreateClrObject = _ => new ExpandoObject();
+        public Func<ObjectInstance, IDictionary<string, object?>> CreateClrObject = _ => new ExpandoObject();
 
         /// <summary>
         /// Strategy to create a CLR object from TypeReference.

Jint/Runtime/Interop/DefaultTypeConverter.cs

@@ -27,9 +27,9 @@ public class DefaultTypeConverter : ITypeConverter
         private static readonly Type engineType = typeof(Engine);
         private static readonly Type typeType = typeof(Type);
 
-        private static readonly MethodInfo convertChangeType = typeof(Convert).GetMethod("ChangeType", new[] { objectType, typeType, typeof(IFormatProvider) });
-        private static readonly MethodInfo jsValueFromObject = jsValueType.GetMethod(nameof(JsValue.FromObject));
-        private static readonly MethodInfo jsValueToObject = jsValueType.GetMethod(nameof(JsValue.ToObject));
+        private static readonly MethodInfo convertChangeType = typeof(Convert).GetMethod("ChangeType", new[] { objectType, typeType, typeof(IFormatProvider) })!;
+        private static readonly MethodInfo jsValueFromObject = jsValueType.GetMethod(nameof(JsValue.FromObject))!;
+        private static readonly MethodInfo jsValueToObject = jsValueType.GetMethod(nameof(JsValue.ToObject))!;
 
 
         public DefaultTypeConverter(Engine engine)
@@ -86,7 +86,7 @@ private bool TryConvert(object? value, Type type, IFormatProvider formatProvider
 
             if (type.IsNullable())
             {
-                type = Nullable.GetUnderlyingType(type);
+                type = Nullable.GetUnderlyingType(type)!;
             }
 
             if (type.IsEnum)
@@ -136,7 +136,7 @@ private bool TryConvert(object? value, Type type, IFormatProvider formatProvider
                     return false;
                 }
 
-                var targetElementType = type.GetElementType();
+                var targetElementType = type.GetElementType()!;
                 var itemsConverted = new object?[source.Length];
                 for (var i = 0; i < source.Length; i++)
                 {
@@ -197,7 +197,7 @@ private bool TryConvert(object? value, Type type, IFormatProvider formatProvider
                     }
                 }
 
-                var obj = Activator.CreateInstance(type, constructorParameters);
+                var obj = Activator.CreateInstance(type, constructorParameters)!;
 
                 var members = type.GetMembers();
                 foreach (var member in members)
@@ -248,7 +248,7 @@ private bool TryConvert(object? value, Type type, IFormatProvider formatProvider
         private Delegate BuildDelegate(Type type, Func<JsValue, JsValue[], JsValue> function)
         {
             var method = type.GetMethod("Invoke");
-            var arguments = method.GetParameters();
+            var arguments = method!.GetParameters();
 
             var parameters = new ParameterExpression[arguments.Length];
             for (var i = 0; i < parameters.Length; i++)
@@ -336,7 +336,7 @@ private static bool TryCastWithOperators(object value, Type type, Type valueType
                 try
                 {
                     converted = castOperator.Invoke(null, new[] { value });
-                    return true;
+                    return converted is not null;
                 }
                 catch
                 {

Jint/Runtime/Interop/DelegateWrapper.cs

@@ -118,7 +118,7 @@ protected internal override JsValue Call(JsValue thisObject, JsValue[] jsArgumen
                     {
                         converted = Engine.ClrTypeConverter.Convert(
                             value.ToObject(),
-                            paramsParameterType,
+                            paramsParameterType!,
                             CultureInfo.InvariantCulture);
                     }