treewide: add and apply a bunch of lints

test/util/romaji_transliteration_test.dart

@@ -2,65 +2,65 @@ import 'package:jadb/util/romaji_transliteration.dart';
 import 'package:test/test.dart';
 
 void main() {
-  group("Romaji -> Hiragana", () {
-    test("Basic test", () {
-      final result = transliterateLatinToHiragana("katamari");
-      expect(result, "かたまり");
+  group('Romaji -> Hiragana', () {
+    test('Basic test', () {
+      final result = transliterateLatinToHiragana('katamari');
+      expect(result, 'かたまり');
     });
 
-    test("Basic test with diacritics", () {
-      final result = transliterateLatinToHiragana("gadamari");
-      expect(result, "がだまり");
+    test('Basic test with diacritics', () {
+      final result = transliterateLatinToHiragana('gadamari');
+      expect(result, 'がだまり');
     });
 
-    test("wi and we", () {
-      final result = transliterateLatinToHiragana("wiwe");
-      expect(result, "うぃうぇ");
+    test('wi and we', () {
+      final result = transliterateLatinToHiragana('wiwe');
+      expect(result, 'うぃうぇ');
     });
 
-    test("nb = mb", () {
-      final result = transliterateLatinToHiragana("kanpai");
-      expect(result, "かんぱい");
+    test('nb = mb', () {
+      final result = transliterateLatinToHiragana('kanpai');
+      expect(result, 'かんぱい');
 
-      final result2 = transliterateLatinToHiragana("kampai");
-      expect(result2, "かんぱい");
+      final result2 = transliterateLatinToHiragana('kampai');
+      expect(result2, 'かんぱい');
     });
 
-    test("Double n", () {
-      final result = transliterateLatinToHiragana("konnichiha");
-      expect(result, "こんにちは");
+    test('Double n', () {
+      final result = transliterateLatinToHiragana('konnichiha');
+      expect(result, 'こんにちは');
     });
 
-    test("Double consonant", () {
-      final result = transliterateLatinToHiragana("kappa");
-      expect(result, "かっぱ");
+    test('Double consonant', () {
+      final result = transliterateLatinToHiragana('kappa');
+      expect(result, 'かっぱ');
     });
   });
 
-  group("Hiragana -> Romaji", () {
-    test("Basic test", () {
-      final result = transliterateHiraganaToLatin("かたまり");
-      expect(result, "katamari");
+  group('Hiragana -> Romaji', () {
+    test('Basic test', () {
+      final result = transliterateHiraganaToLatin('かたまり');
+      expect(result, 'katamari');
     });
 
-    test("Basic test with diacritics", () {
-      final result = transliterateHiraganaToLatin("がだまり");
-      expect(result, "gadamari");
+    test('Basic test with diacritics', () {
+      final result = transliterateHiraganaToLatin('がだまり');
+      expect(result, 'gadamari');
     });
 
-    test("whi and whe", () {
-      final result = transliterateHiraganaToLatin("うぃうぇ");
-      expect(result, "whiwhe");
+    test('whi and whe', () {
+      final result = transliterateHiraganaToLatin('うぃうぇ');
+      expect(result, 'whiwhe');
     });
 
-    test("Double n", () {
-      final result = transliterateHiraganaToLatin("こんにちは");
-      expect(result, "konnichiha");
+    test('Double n', () {
+      final result = transliterateHiraganaToLatin('こんにちは');
+      expect(result, 'konnichiha');
     });
 
-    test("Double consonant", () {
-      final result = transliterateHiraganaToLatin("かっぱ");
-      expect(result, "kappa");
+    test('Double consonant', () {
+      final result = transliterateHiraganaToLatin('かっぱ');
+      expect(result, 'kappa');
     });
   });
 }