null safety migration

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.0
+
+* Nullsafety migration
+
 ## 0.1.4+6
 
 * Linux: Also search lib/ sub directory for libargon.so file.

lib/src/argon2_ffi_impl.dart

@@ -120,16 +120,17 @@ class Argon2FfiFlutter extends Argon2Base {
     return name;
   };
 
-  final ResolveLibrary resolveLibrary;
+  final ResolveLibrary? resolveLibrary;
 
-  int Function(int x, int y) _nativeAdd;
+  late int Function(int x, int y) _nativeAdd;
   @override
-  Argon2Hash argon2hash;
+  late Argon2Hash argon2hash;
 
   int addIt(int x, int y) => _nativeAdd(x, y);
 
   DynamicLibrary _loadLib() {
-    final resolveLibrary = this.resolveLibrary ?? defaultResolveLibrary;
+    final resolveLibrary = this.resolveLibrary as String Function(String?)? ??
+        defaultResolveLibrary as String Function(String?);
 
     if (!Argon2.resolveLibraryForceDynamic &&
         (Platform.isIOS || Platform.isMacOS)) {
@@ -143,9 +144,9 @@ class Argon2FfiFlutter extends Argon2Base {
       [Platform.isIOS, null], // only supports static linking.
     ];
     final libraryName = libraryNames.firstWhere((element) => element[0] == true,
-            orElse: () => throw StateError(
+            orElse: (() => throw StateError(
-                'Unsupported Operating System ${Platform.operatingSystem}'))[1]
+                'Unsupported Operating System ${Platform.operatingSystem}')))[1]
-        as String;
+        as String?;
     _logger.finest('resolving $libraryName');
     final path = resolveLibrary(libraryName);
     _logger.finest('DynamicLibrary.open($path)');

lib/src/argon2_ffi_noop.dart

@@ -4,7 +4,7 @@ import 'package:argon2_ffi_base/src/argon2_ffi_base.dart';
 
 class Argon2FfiFlutter extends Argon2 {
   // ignore: avoid_unused_constructor_parameters
-  Argon2FfiFlutter({ResolveLibrary resolveLibrary});
+  Argon2FfiFlutter({required ResolveLibrary resolveLibrary});
 
   @override
   Uint8List argon2(Argon2Arguments args) {

pubspec.lock

@@ -30,4 +30,4 @@ packages:
     source: hosted
     version: "1.11.0"
 sdks:
-  dart: ">=2.12.0-259.9.beta <3.0.0"
+  dart: ">=2.12.0 <3.0.0"

pubspec.yaml

@@ -1,10 +1,10 @@
 name: argon2_ffi_base
 description: Base package defining the interface for an Argon2 implementation.
-version: 0.1.4+6
+version: 1.0.0
 homepage: https://github.com/authpass/argon2_ffi_base
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   ffi: ^1.0.0