jmap

Description:

jmap

A minimal library to work with JSON decoded maps and lists in a type-safe way.
Usage #
Install and import this package:
import 'package:jmap/jmap.dart';
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Example:
import 'dart:convert';
import 'package:jmap/jmap.dart';

void main() {
const json = """
{
"i": 1,
"obj": {
"i": 2
},
"array": [
-3,
3.14,
{
"s":"_s_"
}
]
}
""";
final map = jsonDecode(json) as Map<String, dynamic>;

// Create a [JMap] from [Map<String, dynamic>].
final JMap jmap = JMap(map, ignoreCase: false);

// Access members.
print(jmap.getInt('i')); // 1
print(jmap.getInt('obj')); // 0 (map['obj'] is not an int)
print(jmap.getIntOrNull('__')); // null

// Objects can be accessed as [JMap].
final JMap obj = jmap.getJMap('obj');
print(obj.getInt('i')); // 2

// Arrays can be accessed as [JList].
final JList arr = jmap.getJList('array');
print(arr.getStringOrNull(1) ?? 'fallback value'); // fallback value

// Chaining.
print(jmap.getJList('array').getJMap(2).getString('s')); // _s_
print(
jmap.getJList('array').getJMap(2).getDoubleOrNull('__') ?? -1.1); // -1.1
}
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Options #

Use JMap({}, ignoreCase: true); to create a case-insensitive JMap.