JsonValue class

Small, defensive helpers for reading JSON-like maps.

Flutter callers often build payloads as Map<String, Object?>, while decoded JSON commonly arrives as Map<String, dynamic>. These helpers keep config factories structural instead of depending on exact generic types.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

boolMap(Object? value) → Map<String, bool>?

boolOrNull(Object? value) → bool?

clone(Object? value) → Object?

Deep-copies JSON-like maps and lists while normalizing map keys to strings. Scalar/object values are preserved by reference.

cloneMap(Map value) → Map<String, dynamic>

deepEquals(Object? a, Object? b) → bool

Deep equality for JSON-like maps/lists, with map keys compared as strings.

deepHash(Object? value) → int

Deep hash matching deepEquals for JSON-like maps/lists.

doubleList(Object? value) → List<double>?

doubleOrNull(Object? value) → double?

enumValue<T extends Enum>(Iterable<T> values, Object? raw, {T? fallback}) → T?

freeze(Object? value) → Object?

Deep-copies and freezes JSON-like maps/lists while normalizing map keys.

freezeMap(Map value) → Map<String, dynamic>

intList(Object? value) → List<int>?

intMatrix(Object? value) → List<List<int>>?

intOrNull(Object? value) → int?

list(Object? value) → List?

map(Object? value) → Map<String, dynamic>?

mapList(Object? value) → List<Map<String, dynamic>>?

string(Object? value) → String?

stringList(Object? value) → List<String>?

Constants

maxTraversalDepth → const int

Prevents recursive JSON-like helpers from overflowing the stack on malicious or accidentally over-nested input.