Remove deprecated lints, enable/fix all dartfmt --fix lints

analysis_options.yaml

@@ -36,13 +36,15 @@ linter:
     - overridden_fields
     - package_api_docs
     - prefer_final_fields
+    - prefer_generic_function_type_aliases
     - prefer_is_not_empty
     #- prefer_single_quotes
     - slash_for_doc_comments
-    - super_goes_last
     - test_types_in_equals
     - throw_in_finally
     - type_init_formals
     - unnecessary_brace_in_string_interps
+    - unnecessary_const
+    - unnecessary_new
     - unrelated_type_equality_checks
     - valid_regexps

benchmark/benchmark.dart

@@ -20,7 +20,7 @@ void main(List<String> args) {
   // Run the benchmark several times. This ensures the VM is warmed up and lets
   // us see how much variance there is.
   for (var i = 0; i <= numTrials; i++) {
-    var start = new DateTime.now();
+    var start = DateTime.now();
 
     // For a single benchmark, convert the source multiple times.
     var result;
@@ -29,7 +29,7 @@ void main(List<String> args) {
     }
 
     var elapsed =
-        new DateTime.now().difference(start).inMilliseconds / runsPerTrial;
+        DateTime.now().difference(start).inMilliseconds / runsPerTrial;
 
     // Keep track of the best run so far.
     if (elapsed >= best) continue;
@@ -53,7 +53,7 @@ void main(List<String> args) {
 
 String loadFile(String name) {
   var path = p.join(p.dirname(p.fromUri(Platform.script)), name);
-  return new File(path).readAsStringSync();
+  return File(path).readAsStringSync();
 }
 
 void printResult(String label, double time) {

bin/markdown.dart

@@ -12,7 +12,7 @@ final extensionSets = <String, ExtensionSet>{
 };
 
 Future main(List<String> args) async {
-  var parser = new ArgParser()
+  var parser = ArgParser()
     ..addFlag('help', negatable: false, help: 'Print help text and exit')
     ..addFlag('version', negatable: false, help: 'Print version and exit')
     ..addOption('extension-set',
@@ -47,13 +47,13 @@ Future main(List<String> args) async {
 
   if (results.rest.length == 1) {
     // Read argument as a file path.
-    var input = new File(results.rest.first).readAsStringSync();
+    var input = File(results.rest.first).readAsStringSync();
     print(markdownToHtml(input, extensionSet: extensionSet));
     return;
   }
 
   // Read from stdin.
-  var buffer = new StringBuffer();
+  var buffer = StringBuffer();
   String line;
   while ((line = stdin.readLineSync()) != null) {
     buffer.writeln(line);

example/app.dart

@@ -8,8 +8,8 @@ final markdownInput = querySelector('#markdown') as TextAreaElement;
 final htmlDiv = querySelector('#html') as DivElement;
 final versionSpan = querySelector('.version') as SpanElement;
 
-final nullSanitizer = new NullTreeSanitizer();
-const typing = const Duration(milliseconds: 150);
+final nullSanitizer = NullTreeSanitizer();
+const typing = Duration(milliseconds: 150);
 final introText = r'''Markdown is the **best**!
 
 * It has lists.
@@ -89,10 +89,10 @@ void _typeItOut(String msg, int pos) {
     markdownInput.focus();
     _renderMarkdown();
     pos++;
-    timer = new Timer(typing, addCharacter);
+    timer = Timer(typing, addCharacter);
   }
 
-  timer = new Timer(typing, addCharacter);
+  timer = Timer(typing, addCharacter);
 }
 
 void _switchFlavor(Event e) {

lib/src/ast.dart

@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-typedef Node Resolver(String name, [String title]);
+typedef Resolver = Node Function(String name, [String title]);
 
 /// Base class for any AST item.
 ///
@@ -35,7 +35,7 @@ class Element implements Node {
 
   /// Instantiates a [tag] Element with a single Text child.
   Element.text(this.tag, String text)
-      : children = [new Text(text)],
+      : children = [Text(text)],
         attributes = {};
 
   /// Whether this element is self-closing.