diff --git a/README.md b/README.md
index 36b21335..4eca3d6f 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ For convenience's sake, this library also exports `matcher`.
 import 'package:angel_validate/angel_validate.dart';
 
 main() {
-    var validator = new Validator({
+    var validator = Validator({
         'username': isAlphaNum,
         'multiple,keys,with,same,rules': [isString, isNotEmpty],
         'balance': [
@@ -91,7 +91,7 @@ to throw an error if it is not present.
 
 ```dart
 main() {
-    var validator = new Validator({
+    var validator = Validator({
         'googleId*': isString,
         
         // You can also use `requireField`
@@ -111,7 +111,7 @@ If not present, default values will be filled in *before* validation.
 This means that they can still be used with required fields.
 
 ```dart
-final Validator todo = new Validator({
+final Validator todo = Validator({
     'text*': isString,
     'completed*': isBool
 }, defaultValues: {
@@ -134,9 +134,9 @@ The function must *synchronously* return a `bool`.
 
 ```dart
 main() {
-    var validator = new Validator({
+    var validator = Validator({
         'key*': (key) {
-            var file = new File('whitelist.txt');
+            var file = File('whitelist.txt');
             return file.readFileSync().contains(key);
         }
     });
@@ -148,7 +148,7 @@ If these are not present, `angel_validate` will *attempt* to generate
 a coherent error message on its own.
 
 ```dart
-new Validator({
+Validator({
     'age': [greaterThanOrEqualTo(18)]
 }, customErrorMessages: {
     'age': 'You must be an adult to see this page.'
@@ -189,7 +189,7 @@ You can also use `extend` to mark fields as required or forbidden that originall
 were not. Default value and custom error message extension is also supported.
 
 ```dart
-final Validator userValidator = new Validator({
+final Validator userValidator = Validator({
     'username': isString,
     'age': [
         isNum,
@@ -210,7 +210,7 @@ var ageIsOptional = userValidator.extend({
 });
 ```
 
-Note that by default, new validation rules are simply appended to
+Note that by default, validation rules are simply appended to
 the existing list. To completely overwrite existing rules, set the
 `overwrite` flag to `true`.
 
@@ -246,23 +246,23 @@ a `Validator` instance to the constructor, because it extends the
 
 ```dart
 main() {
-    var bio = new Validator({
+    var bio = Validator({
         'age*': [isInt, greaterThanOrEqualTo(0)],
         'birthYear*': isInt,
         'countryOfOrigin': isString
     });
 
-    var book = new Validator({
+    var book = Validator({
         'title*': isString,
         'year*': [
             isNum,
             (year) {
-                return year <= new DateTime.now().year;
+                return year <= DateTime.now().year;
             }
         ]
     });
 
-    var author = new Validator({
+    var author = Validator({
         'bio*': bio,
         'books*': [
             isList,
@@ -289,11 +289,11 @@ main() {
 import 'package:angel_framework/angel_framework.dart';
 import 'package:angel_validate/server.dart';
 
-final Validator echo = new Validator({
+final Validator echo = Validator({
     'message*': (String message) => message.length >= 5
 });
 
-final Validator todo = new Validator({
+final Validator todo = Validator({
     'text*': isString,
     'completed*': isBool
 }, defaultValues: {
@@ -301,7 +301,7 @@ final Validator todo = new Validator({
 });
 
 main() async {
-    var app = new Angel();
+    var app = Angel();
 
     app.chain([validate(echo)]).post('/echo', (req, res) async {
         res.write('You said: "${req.bodyAsMap["message"]}"');
diff --git a/analysis_options.yaml b/analysis_options.yaml
index eae1e42a..c230cee7 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,3 +1,4 @@
+include: package:pedantic/analysis_options.yaml
 analyzer:
   strong-mode:
     implicit-casts: false
\ No newline at end of file
diff --git a/example/main.dart b/example/main.dart
index af500750..f9ed89b5 100644
--- a/example/main.dart
+++ b/example/main.dart
@@ -1,24 +1,24 @@
 import 'package:angel_validate/angel_validate.dart';
 
 main() {
-  var bio = new Validator({
+  var bio = Validator({
     'age*': [isInt, greaterThanOrEqualTo(0)],
     'birthYear*': isInt,
     'countryOfOrigin': isString
   });
 
-  var book = new Validator({
+  var book = Validator({
     'title*': isString,
     'year*': [
       isNum,
       (year) {
-        return year <= new DateTime.now().year;
+        return year <= DateTime.now().year;
       }
     ]
   });
 
   // ignore: unused_local_variable
-  var author = new Validator({
+  var author = Validator({
     'bio*': bio,
     'books*': [isList, everyElement(book)]
   }, defaultValues: {
diff --git a/lib/server.dart b/lib/server.dart
index 4e03bad5..9ae41185 100644
--- a/lib/server.dart
+++ b/lib/server.dart
@@ -52,13 +52,13 @@ RequestHandler filterQuery(Iterable<String> only) {
 /// Validates the data in `req.bodyAsMap`, and sets the body to
 /// filtered data before continuing the response.
 RequestHandler validate(Validator validator,
-    {String errorMessage: 'Invalid data.'}) {
+    {String errorMessage = 'Invalid data.'}) {
   return (RequestContext req, res) async {
     await req.parseBody();
     var result = await asyncApplyValidator(validator, req.bodyAsMap, req.app);
 
     if (result.errors.isNotEmpty) {
-      throw new AngelHttpException.badRequest(
+      throw AngelHttpException.badRequest(
           message: errorMessage, errors: result.errors);
     }
 
@@ -73,13 +73,13 @@ RequestHandler validate(Validator validator,
 /// Validates the data in `req.queryParameters`, and sets the query to
 /// filtered data before continuing the response.
 RequestHandler validateQuery(Validator validator,
-    {String errorMessage: 'Invalid data.'}) {
+    {String errorMessage = 'Invalid data.'}) {
   return (RequestContext req, res) async {
     var result =
         await asyncApplyValidator(validator, req.queryParameters, req.app);
 
     if (result.errors.isNotEmpty) {
-      throw new AngelHttpException.badRequest(
+      throw AngelHttpException.badRequest(
           message: errorMessage, errors: result.errors);
     }
 
@@ -94,13 +94,13 @@ RequestHandler validateQuery(Validator validator,
 /// Validates the data in `e.data`, and sets the data to
 /// filtered data before continuing the service event.
 HookedServiceEventListener validateEvent(Validator validator,
-    {String errorMessage: 'Invalid data.'}) {
+    {String errorMessage = 'Invalid data.'}) {
   return (HookedServiceEvent e) async {
     var result = await asyncApplyValidator(
         validator, e.data as Map, (e.request?.app ?? e.service.app));
 
     if (result.errors.isNotEmpty) {
-      throw new AngelHttpException.badRequest(
+      throw AngelHttpException.badRequest(
           message: errorMessage, errors: result.errors);
     }
 
@@ -120,7 +120,7 @@ Future<ValidationResult> asyncApplyValidator(
 
   for (var key in result.data.keys) {
     var value = result.data[key];
-    var description = new StringDescription("'$key': expected ");
+    var description = StringDescription("'$key': expected ");
 
     for (var rule in validator.rules[key]) {
       if (rule is AngelMatcher) {
@@ -135,7 +135,7 @@ Future<ValidationResult> asyncApplyValidator(
     }
   }
 
-  var m = new Map<String, dynamic>.from(result.data);
+  var m = Map<String, dynamic>.from(result.data);
   for (var key in errantKeys) {
     m.remove(key);
   }
diff --git a/lib/src/async.dart b/lib/src/async.dart
index c4a316af..11099fb2 100644
--- a/lib/src/async.dart
+++ b/lib/src/async.dart
@@ -11,7 +11,7 @@ import 'context_aware.dart';
 AngelMatcher predicateWithAngel(
         FutureOr<bool> Function(String, Object, Angel) f,
         [String description = 'satisfies function']) =>
-    new _PredicateWithAngel(f, description);
+    _PredicateWithAngel(f, description);
 
 /// Returns an [AngelMatcher] that applies an asynchronously-created [Matcher]
 /// to the input.
@@ -19,7 +19,7 @@ AngelMatcher predicateWithAngel(
 /// Use this to match values against configuration, injections, etc.
 AngelMatcher matchWithAngel(FutureOr<Matcher> Function(Object, Map, Angel) f,
         [String description = 'satisfies asynchronously created matcher']) =>
-    new _MatchWithAngel(f, description);
+    _MatchWithAngel(f, description);
 
 /// Calls [matchWithAngel] without the initial parameter.
 AngelMatcher matchWithAngelBinary(
@@ -42,7 +42,7 @@ AngelMatcher matchWithAngelNullary(FutureOr<Matcher> Function() f,
 /// If [x] is an [AngelMatcher], then it is returned, unmodified.
 AngelMatcher wrapAngelMatcher(x) {
   if (x is AngelMatcher) return x;
-  if (x is ContextAwareMatcher) return new _WrappedAngelMatcher(x);
+  if (x is ContextAwareMatcher) return _WrappedAngelMatcher(x);
   return wrapAngelMatcher(wrapContextAwareMatcher(x));
 }
 
@@ -50,13 +50,13 @@ AngelMatcher wrapAngelMatcher(x) {
 AngelMatcher matchAsync(FutureOr<Matcher> Function(String, Object) matcher,
     FutureOr Function() feature,
     [String description = 'satisfies asynchronously created matcher']) {
-  return new _MatchAsync(matcher, feature, description);
+  return _MatchAsync(matcher, feature, description);
 }
 
 /// Returns an [AngelMatcher] that verifies that an item with the given [idField]
 /// exists in the service at [servicePath], without throwing a `404` or returning `null`.
 AngelMatcher idExistsInService(String servicePath,
-    {String idField: 'id', String description}) {
+    {String idField = 'id', String description}) {
   return predicateWithAngel(
     (key, item, app) async {
       try {
@@ -115,7 +115,7 @@ class _MatchWithAngel extends AngelMatcher {
   @override
   Future<bool> matchesWithAngel(
       item, String key, Map context, Map matchState, Angel app) {
-    return new Future.sync(() => f(item, context, app)).then((result) {
+    return Future.sync(() => f(item, context, app)).then((result) {
       return result.matches(item, matchState);
     });
   }
@@ -135,7 +135,7 @@ class _PredicateWithAngel extends AngelMatcher {
   @override
   Future<bool> matchesWithAngel(
       item, String key, Map context, Map matchState, Angel app) {
-    return new Future<bool>.sync(() => predicate(key, item, app));
+    return Future<bool>.sync(() => predicate(key, item, app));
   }
 }
 
diff --git a/lib/src/context_aware.dart b/lib/src/context_aware.dart
index 9970d773..d9d3de61 100644
--- a/lib/src/context_aware.dart
+++ b/lib/src/context_aware.dart
@@ -4,14 +4,14 @@ import 'package:matcher/matcher.dart';
 ContextAwareMatcher predicateWithContext(
     bool Function(Object, String, Map, Map) f,
     [String description = 'satisfies function']) {
-  return new _PredicateWithContext(f, description);
+  return _PredicateWithContext(f, description);
 }
 
 /// Wraps [x] in a [ContextAwareMatcher].
 ContextAwareMatcher wrapContextAwareMatcher(x) {
-  if (x is ContextAwareMatcher)
+  if (x is ContextAwareMatcher) {
     return x;
-  else if (x is Matcher) return new _WrappedContextAwareMatcher(x);
+  } else if (x is Matcher) return _WrappedContextAwareMatcher(x);
   return wrapContextAwareMatcher(wrapMatcher(x));
 }
 
diff --git a/lib/src/matchers.dart b/lib/src/matchers.dart
index 93ded920..3a6c7be0 100644
--- a/lib/src/matchers.dart
+++ b/lib/src/matchers.dart
@@ -2,11 +2,11 @@ import 'package:matcher/matcher.dart';
 import 'context_aware.dart';
 import 'context_validator.dart';
 
-final RegExp _alphaDash = new RegExp(r'^[A-Za-z0-9_-]+$');
-final RegExp _alphaNum = new RegExp(r'^[A-Za-z0-9]+$');
-final RegExp _email = new RegExp(
+final RegExp _alphaDash = RegExp(r'^[A-Za-z0-9_-]+$');
+final RegExp _alphaNum = RegExp(r'^[A-Za-z0-9]+$');
+final RegExp _email = RegExp(
     r"^[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$");
-final RegExp _url = new RegExp(
+final RegExp _url = RegExp(
     r'https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)');
 
 /// Asserts that a `String` is alphanumeric, but also lets it contain dashes or underscores.
@@ -126,8 +126,8 @@ ContextValidator requiredWithoutAll(Iterable<String> keys) =>
     _require((ctx) => !keys.any(ctx.containsKey));
 
 ContextValidator _require(bool Function(Map) f) {
-  return new ContextValidator(
+  return ContextValidator(
     (key, context) => f(context) && context.containsKey(key),
-    (desc, key, _) => new StringDescription('Missing required field "$key".'),
+    (desc, key, _) => StringDescription('Missing required field "$key".'),
   );
 }
diff --git a/lib/src/validator.dart b/lib/src/validator.dart
index 06f25806..98a20047 100644
--- a/lib/src/validator.dart
+++ b/lib/src/validator.dart
@@ -3,9 +3,9 @@ import 'package:matcher/matcher.dart';
 import 'context_aware.dart';
 import 'context_validator.dart';
 
-final RegExp _asterisk = new RegExp(r'\*$');
-final RegExp _forbidden = new RegExp(r'!$');
-final RegExp _optional = new RegExp(r'\?$');
+final RegExp _asterisk = RegExp(r'\*$');
+final RegExp _forbidden = RegExp(r'!$');
+final RegExp _optional = RegExp(r'\?$');
 
 /// Returns a value based the result of a computation.
 typedef DefaultValueFunction();
@@ -84,10 +84,11 @@ class Validator extends Matcher {
         var iterable = [];
 
         _addTo(x) {
-          if (x is Iterable)
+          if (x is Iterable) {
             x.forEach(_addTo);
-          else
+          } else {
             iterable.add(x);
+          }
         }
 
         _iterable.forEach(_addTo);
@@ -108,8 +109,8 @@ class Validator extends Matcher {
   Validator.empty();
 
   Validator(Map<String, dynamic> schema,
-      {Map<String, dynamic> defaultValues: const {},
-      Map<String, dynamic> customErrorMessages: const {}}) {
+      {Map<String, dynamic> defaultValues = const {},
+      Map<String, dynamic> customErrorMessages = const {}}) {
     this.defaultValues.addAll(defaultValues ?? {});
     this.customErrorMessages.addAll(customErrorMessages ?? {});
     _importSchema(schema);
@@ -121,7 +122,7 @@ class Validator extends Matcher {
   /// Validates, and filters input data.
   ValidationResult check(Map inputData) {
     List<String> errors = [];
-    var input = new Map.from(inputData);
+    var input = Map.from(inputData);
     Map<String, dynamic> data = {};
 
     for (String key in defaultValues.keys) {
@@ -133,20 +134,22 @@ class Validator extends Matcher {
 
     for (String field in forbiddenFields) {
       if (input.containsKey(field)) {
-        if (!customErrorMessages.containsKey(field))
+        if (!customErrorMessages.containsKey(field)) {
           errors.add("'$field' is forbidden.");
-        else
+        } else {
           errors.add(customError(field, input[field]));
+        }
       }
     }
 
     for (String field in requiredFields) {
       if (!_hasContextValidators(rules[field] ?? [])) {
         if (!input.containsKey(field)) {
-          if (!customErrorMessages.containsKey(field))
+          if (!customErrorMessages.containsKey(field)) {
             errors.add("'$field' is required.");
-          else
+          } else {
             errors.add(customError(field, 'none'));
+          }
         }
       }
     }
@@ -157,7 +160,7 @@ class Validator extends Matcher {
       if (key is String && rules.containsKey(key)) {
         var valid = true;
         var value = input[key];
-        var description = new StringDescription("'$key': expected ");
+        var description = StringDescription("'$key': expected ");
 
         for (var matcher in rules[key]) {
           if (matcher is ContextValidator) {
@@ -192,8 +195,9 @@ class Validator extends Matcher {
                 }
 
                 if (!result) {
-                  if (!customErrorMessages.containsKey(key))
+                  if (!customErrorMessages.containsKey(key)) {
                     errors.add(matcher.describe(description).toString().trim());
+                  }
                   valid = false;
                   break;
                 }
@@ -215,10 +219,10 @@ class Validator extends Matcher {
     }
 
     if (errors.isNotEmpty) {
-      return new ValidationResult().._errors.addAll(errors);
+      return ValidationResult().._errors.addAll(errors);
     }
 
-    return new ValidationResult().._data.addAll(data);
+    return ValidationResult().._data.addAll(data);
   }
 
   /// Validates, and filters input data after running [autoParse].
@@ -227,29 +231,30 @@ class Validator extends Matcher {
 
   /// Renders the given custom error.
   String customError(String key, value) {
-    if (!customErrorMessages.containsKey(key))
-      throw new ArgumentError("No custom error message registered for '$key'.");
+    if (!customErrorMessages.containsKey(key)) {
+      throw ArgumentError("No custom error message registered for '$key'.");
+    }
 
     var msg = customErrorMessages[key];
 
-    if (msg is String)
+    if (msg is String) {
       return msg.replaceAll('{{value}}', value.toString());
-    else if (msg is CustomErrorMessageFunction) {
+    } else if (msg is CustomErrorMessageFunction) {
       return msg(value);
     }
 
-    throw new ArgumentError("Invalid custom error message '$key': $msg");
+    throw ArgumentError("Invalid custom error message '$key': $msg");
   }
 
   /// Validates input data, and throws an error if it is invalid.
   ///
   /// Otherwise, the filtered data is returned.
   Map<String, dynamic> enforce(Map inputData,
-      {String errorMessage: 'Invalid data.'}) {
+      {String errorMessage = 'Invalid data.'}) {
     var result = check(inputData);
 
     if (result._errors.isNotEmpty) {
-      throw new ValidationException(errorMessage, errors: result._errors);
+      throw ValidationException(errorMessage, errors: result._errors);
     }
 
     return result.data;
@@ -263,11 +268,11 @@ class Validator extends Matcher {
 
   /// Creates a copy with additional validation rules.
   Validator extend(Map<String, dynamic> schema,
-      {Map<String, dynamic> defaultValues: const {},
-      Map<String, dynamic> customErrorMessages: const {},
-      bool overwrite: false}) {
+      {Map<String, dynamic> defaultValues = const {},
+      Map<String, dynamic> customErrorMessages = const {},
+      bool overwrite = false}) {
     Map<String, dynamic> _schema = {};
-    var child = new Validator.empty()
+    var child = Validator.empty()
       ..defaultValues.addAll(this.defaultValues)
       ..defaultValues.addAll(defaultValues ?? {})
       ..customErrorMessages.addAll(this.customErrorMessages)
@@ -355,18 +360,18 @@ class ValidationResult {
   final List<String> _errors = [];
 
   /// The successfully validated data, filtered from the original input.
-  Map<String, dynamic> get data => new Map<String, dynamic>.unmodifiable(_data);
+  Map<String, dynamic> get data => Map<String, dynamic>.unmodifiable(_data);
 
   /// A list of errors that resulted in the given data being marked invalid.
   ///
   /// This is empty if validation was successful.
-  List<String> get errors => new List<String>.unmodifiable(_errors);
+  List<String> get errors => List<String>.unmodifiable(_errors);
 
   ValidationResult withData(Map<String, dynamic> data) =>
-      new ValidationResult().._data.addAll(data).._errors.addAll(_errors);
+      ValidationResult().._data.addAll(data).._errors.addAll(_errors);
 
   ValidationResult withErrors(Iterable<String> errors) =>
-      new ValidationResult().._data.addAll(_data).._errors.addAll(errors);
+      ValidationResult().._data.addAll(_data).._errors.addAll(errors);
 }
 
 /// Occurs when user-provided data is invalid.
@@ -377,8 +382,8 @@ class ValidationException extends AngelHttpException {
   /// A descriptive message describing the error.
   final String message;
 
-  ValidationException(this.message, {List<String> errors: const []})
-      : super(new FormatException(message),
+  ValidationException(this.message, {List<String> errors = const []})
+      : super(FormatException(message),
             statusCode: 400,
             errors: errors ?? [],
             stackTrace: StackTrace.current) {
diff --git a/pubspec.yaml b/pubspec.yaml
index 3ec0cb57..baa18662 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -15,4 +15,5 @@ dev_dependencies:
   build_web_compilers: ^0.4.0
   logging: ^0.11.0
   mock_request:
+  pedantic: ^1.0.0
   test: ^1.0.0
\ No newline at end of file
diff --git a/test/basic_test.dart b/test/basic_test.dart
index 47f28d3f..567696b2 100644
--- a/test/basic_test.dart
+++ b/test/basic_test.dart
@@ -1,10 +1,10 @@
 import 'package:angel_validate/angel_validate.dart';
 import 'package:test/test.dart';
 
-final Validator emailSchema = new Validator({'to': isEmail},
-    customErrorMessages: {'to': 'Hello, world!'});
+final Validator emailSchema =
+    Validator({'to': isEmail}, customErrorMessages: {'to': 'Hello, world!'});
 
-final Validator todoSchema = new Validator({
+final Validator todoSchema = Validator({
   'id': [isInt, isPositive],
   'text*': isString,
   'completed*': isBool,
@@ -32,7 +32,7 @@ main() {
       todoSchema
           .enforce({'id': 'fool', 'text': 'Hello, world!', 'completed': 4});
       // ignore: deprecated_member_use
-    }, throwsA(new isInstanceOf<ValidationException>()));
+    }, throwsA(isInstanceOf<ValidationException>()));
   });
 
   test('filter', () {
diff --git a/test/server_test.dart b/test/server_test.dart
index 0bf6451e..3e84f4ce 100644
--- a/test/server_test.dart
+++ b/test/server_test.dart
@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:convert';
 import 'package:angel_framework/angel_framework.dart';
 import 'package:angel_framework/http.dart';
@@ -7,7 +8,7 @@ import 'package:logging/logging.dart';
 import 'package:mock_request/mock_request.dart';
 import 'package:test/test.dart';
 
-final Validator echoSchema = new Validator({'message*': isString});
+final Validator echoSchema = Validator({'message*': isString});
 
 void printRecord(LogRecord rec) {
   print(rec);
@@ -21,8 +22,8 @@ main() {
   TestClient client;
 
   setUp(() async {
-    app = new Angel();
-    http = new AngelHttp(app, useZone: false);
+    app = Angel();
+    http = AngelHttp(app, useZone: false);
 
     app.chain([validate(echoSchema)]).post('/echo',
         (RequestContext req, res) async {
@@ -30,7 +31,7 @@ main() {
       res.write('Hello, ${req.bodyAsMap['message']}!');
     });
 
-    app.logger = new Logger('angel')..onRecord.listen(printRecord);
+    app.logger = Logger('angel')..onRecord.listen(printRecord);
     client = await connectTo(app);
   });
 
@@ -51,12 +52,15 @@ main() {
     });
 
     test('enforce', () async {
-      var rq = new MockHttpRequest('POST', new Uri(path: '/echo'))
+      var rq = MockHttpRequest('POST', Uri(path: '/echo'))
         ..headers.add('accept', '*/*')
         ..headers.add('content-type', 'application/json')
-        ..write(json.encode({'foo': 'bar'}))
-        ..close();
-      http.handleRequest(rq);
+        ..write(json.encode({'foo': 'bar'}));
+
+      scheduleMicrotask(() async {
+        await rq.close();
+        await http.handleRequest(rq);
+      });
 
       var responseBody = await rq.response.transform(utf8.decoder).join();
       print('Response: ${responseBody}');
diff --git a/web/main.dart b/web/main.dart
index 08406f27..e2c90e5a 100644
--- a/web/main.dart
+++ b/web/main.dart
@@ -5,7 +5,7 @@ final $errors = querySelector('#errors') as UListElement;
 final $form = querySelector('#form') as FormElement;
 final $blank = querySelector('[name="blank"]') as InputElement;
 
-final Validator formSchema = new Validator({
+final Validator formSchema = Validator({
   'firstName*': [isString, isNotEmpty],
   'lastName*': [isString, isNotEmpty],
   'age*': [isInt, greaterThanOrEqualTo(18)],
@@ -15,12 +15,13 @@ final Validator formSchema = new Validator({
   'familySize': 1
 }, customErrorMessages: {
   'age': (age) {
-    if (age is int && age < 18)
+    if (age is int && age < 18) {
       return 'Only adults can register for passports. Sorry, kid!';
-    else if (age == null || (age is String && age.trim().isEmpty))
+    } else if (age == null || (age is String && age.trim().isEmpty)) {
       return 'Age is required.';
-    else
+    } else {
       return 'Age must be a positive integer. Unless you are a monster...';
+    }
   },
   'blank':
       "I told you to leave that field blank, but instead you typed '{{value}}'..."
@@ -54,12 +55,12 @@ main() {
             'Number of People in Family: ${passportInfo["familySize"]}'));
     } on ValidationException catch (e) {
       $errors.children.addAll(e.errors.map((error) {
-        return new LIElement()..text = error;
+        return LIElement()..text = error;
       }));
     }
   });
 }
 
-LIElement success(String str) => new LIElement()
+LIElement success(String str) => LIElement()
   ..classes.add('success')
   ..text = str;