Error: Not found: 'package:recase/recase.dart'，引入本地recase

lib/builder.dart

@@ -3,8 +3,7 @@ import 'dart:convert';
 import 'package:build/build.dart';
 import 'package:code_builder/code_builder.dart';
 import 'package:dart_style/dart_style.dart';
-import 'package:meta/meta.dart';
-import 'package:recase/recase.dart';
+import 'recase4.0.0/recase.dart';
 
 import 'models.dart';
 
@@ -18,8 +17,8 @@ Builder genFromJson(BuilderOptions options) {
 
 class GeneratorOptions {
   GeneratorOptions({
-    @required this.fontName,
-    @required this.selectionJsonPath,
+    required this.fontName,
+    required this.selectionJsonPath,
   });
 
   factory GeneratorOptions.fromOptions(BuilderOptions options) {
@@ -32,12 +31,12 @@ class GeneratorOptions {
 
     return GeneratorOptions(
       fontName: config['font_name'] as String,
-      selectionJsonPath: config['selection_json_path'] as String,
+      selectionJsonPath: config['selection_json_path'],
     );
   }
 
   final String fontName;
-  final String selectionJsonPath;
+  final String? selectionJsonPath;
 }
 
 class IcomoonBuilder implements Builder {
@@ -80,7 +79,7 @@ class IcomoonBuilder implements Builder {
       ..fields.addAll(fields));
     final content = Library(
       (b) => b.body..add(icomoonClass),
-    ).accept(DartEmitter(Allocator()));
+    ).accept(DartEmitter(allocator: Allocator()));
 
     await buildStep.writeAsString(
       buildStep.inputId.changeExtension('.dart'),

lib/models.dart

@@ -1,8 +1,7 @@
-import 'package:meta/meta.dart';
 
 class SelectionModel {
   SelectionModel({
-    @required this.icons,
+    required this.icons,
   });
 
   factory SelectionModel.fromJson(Map<String, dynamic> json) {
@@ -18,7 +17,7 @@ class SelectionModel {
 }
 
 class IcomoonIcon {
-  IcomoonIcon({@required this.properties});
+  IcomoonIcon({required this.properties});
 
   factory IcomoonIcon.fromJson(Map<String, dynamic> json) {
     final properties = json['properties'] as Map<String, dynamic>;
@@ -30,7 +29,7 @@ class IcomoonIcon {
 }
 
 class IconProperties {
-  IconProperties({@required this.name, @required this.code});
+  IconProperties({required this.name, required this.code});
 
   factory IconProperties.fromJson(Map<String, dynamic> json) {
     return IconProperties(

lib/recase4.0.0/recase.dart

@@ -0,0 +1,134 @@
+/// An instance of text to be re-cased.
+class ReCase {
+  final RegExp _upperAlphaRegex = RegExp(r'[A-Z]');
+
+  final symbolSet = {' ', '.', '/', '_', '\\', '-'};
+
+  late String originalText;
+  late List<String> _words;
+
+  ReCase(String text) {
+    this.originalText = text;
+    this._words = _groupIntoWords(text);
+  }
+
+  List<String> _groupIntoWords(String text) {
+    StringBuffer sb = StringBuffer();
+    List<String> words = [];
+    bool isAllCaps = text.toUpperCase() == text;
+
+    for (int i = 0; i < text.length; i++) {
+      String char = text[i];
+      String? nextChar = i + 1 == text.length ? null : text[i + 1];
+
+      if (symbolSet.contains(char)) {
+        continue;
+      }
+
+      sb.write(char);
+
+      bool isEndOfWord = nextChar == null ||
+          (_upperAlphaRegex.hasMatch(nextChar) && !isAllCaps) ||
+          symbolSet.contains(nextChar);
+
+      if (isEndOfWord) {
+        words.add(sb.toString());
+        sb.clear();
+      }
+    }
+
+    return words;
+  }
+
+  /// camelCase
+  String get camelCase => _getCamelCase();
+
+  /// CONSTANT_CASE
+  String get constantCase => _getConstantCase();
+
+  /// Sentence case
+  String get sentenceCase => _getSentenceCase();
+
+  /// snake_case
+  String get snakeCase => _getSnakeCase();
+
+  /// dot.case
+  String get dotCase => _getSnakeCase(separator: '.');
+
+  /// param-case
+  String get paramCase => _getSnakeCase(separator: '-');
+
+  /// path/case
+  String get pathCase => _getSnakeCase(separator: '/');
+
+  /// PascalCase
+  String get pascalCase => _getPascalCase();
+
+  /// Header-Case
+  String get headerCase => _getPascalCase(separator: '-');
+
+  /// Title Case
+  String get titleCase => _getPascalCase(separator: ' ');
+
+  String _getCamelCase({String separator: ''}) {
+    List<String> words = this._words.map(_upperCaseFirstLetter).toList();
+    if (_words.isNotEmpty) {
+      words[0] = words[0].toLowerCase();
+    }
+
+    return words.join(separator);
+  }
+
+  String _getConstantCase({String separator: '_'}) {
+    List<String> words = this._words.map((word) => word.toUpperCase()).toList();
+
+    return words.join(separator);
+  }
+
+  String _getPascalCase({String separator: ''}) {
+    List<String> words = this._words.map(_upperCaseFirstLetter).toList();
+
+    return words.join(separator);
+  }
+
+  String _getSentenceCase({String separator: ' '}) {
+    List<String> words = this._words.map((word) => word.toLowerCase()).toList();
+    if (_words.isNotEmpty) {
+      words[0] = _upperCaseFirstLetter(words[0]);
+    }
+
+    return words.join(separator);
+  }
+
+  String _getSnakeCase({String separator: '_'}) {
+    List<String> words = this._words.map((word) => word.toLowerCase()).toList();
+
+    return words.join(separator);
+  }
+
+  String _upperCaseFirstLetter(String word) {
+    return '${word.substring(0, 1).toUpperCase()}${word.substring(1).toLowerCase()}';
+  }
+}
+
+extension StringReCase on String {
+  String get camelCase => ReCase(this).camelCase;
+
+  String get constantCase => ReCase(this).constantCase;
+
+  String get sentenceCase => ReCase(this).sentenceCase;
+
+  String get snakeCase => ReCase(this).snakeCase;
+
+  String get dotCase => ReCase(this).dotCase;
+
+  String get paramCase => ReCase(this).paramCase;
+
+  String get pathCase => ReCase(this).pathCase;
+
+  String get pascalCase => ReCase(this).pascalCase;
+
+  String get headerCase => ReCase(this).headerCase;
+
+  String get titleCase => ReCase(this).titleCase;
+}

pubspec.yaml

@@ -1,21 +1,20 @@
 name: icomoon_selection_gen
 description: A code generator for flutter that reads icomoon selection.json and generate the icon classes
-version: 0.0.2
+version: 0.0.3
 author: Gabriel Rohden
 homepage:
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: ">=2.17.1 <3.0.0"
 
 dependencies:
-  build: ^1.1.4
-  build_config: ^0.4.0
+  build: ^2.3.0
+  build_config: ^1.0.0
 
 dev_dependencies:
-  meta: ^1.1.7
-  recase: ^3.0.0
-  dart_style: ^1.0.0
-  code_builder: ^3.3.0
-  build_runner: ^1.5.0
-  build_test: ^0.10.7+3
+#  recase: ^4.0.0
+  dart_style: ^2.2.3
+  code_builder: ^4.1.0
+  build_runner: ^2.1.11
+  build_test: ^2.1.5