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>>> Remove blank lines at top of file.


// comment
<<<
// comment
>>> Remove blank lines at end of file.
// comment




<<<
// comment
>>> Keep up to one blank line between top level comments.

// one

// two
// three



// four


<<<
// one

// two
// three

// four
>>> Remove extra spaces between adjacent inline block comments.
  /* foo */   /* bar */
<<<
/* foo */ /* bar */
>>> Inline comment between different kinds of directives.
library a; /* comment */ import 'b.dart';
<<<
library a; /* comment */

import 'b.dart';
>>> Inline comment between directives.
import 'a.dart'; /* comment */ import 'b.dart';
<<<
import 'a.dart'; /* comment */
import 'b.dart';
>>> Inline comment after directive.
import 'a.dart'; /* comment */
import 'b.dart';
<<<
import 'a.dart'; /* comment */
import 'b.dart';
>>> Inline comment before directive.
import 'a.dart';
/* comment */ import 'b.dart';
<<<
import 'a.dart';
/* comment */
import 'b.dart';
>>> Ensure blank line above doc comments on top level directives and declarations.
#!script
/// Doc library.
library;
/// Doc export.
export 'a.dart';
/// Doc import.
import 'a.dart';
/// Doc class.
class C {}
/// Doc variable.
var a = 1;
/// Doc function.
void b() => body;
/// Doc function.
void c() {;}
<<<
#!script

/// Doc library.
library;

/// Doc export.
export 'a.dart';

/// Doc import.
import 'a.dart';

/// Doc class.
class C {}

/// Doc variable.
var a = 1;

/// Doc function.
void b() => body;

/// Doc function.
void c() {
  ;
}
>>> Preserve one blank line between a leading comment and declaration.
// comment



var a = 1;
<<<
// comment

var a = 1;
>>> Preserve one blank line between a leading comment and directive.
// comment



import 'x.dart';
<<<
// comment

import 'x.dart';
>>> Preserve one blank line between comments and declarations.
// comment
var a = 1;

// comment

var b = 2;



// comment



var c = 3;
<<<
// comment
var a = 1;

// comment

var b = 2;

// comment

var c = 3;