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2.3.1-dev

  • Hide --fix and related options in --help. The options are still there and supported, but are no longer shown by default. Eventually, we would like all users to move to using dart fix instead of dart format --fix.
  • Don't indent || pattern operands in switch expression cases.
  • Don't format sealed, interface, and final keywords on mixin declarations. The proposal was updated to no longer support them.

2.3.0

New language features

  • Format patterns and related features.
  • Format record expressions and record type annotations.
  • Format class modifiers base, final, interface, mixin, and sealed.
  • Format inline class declarations.
  • Format unnamed libraries.

Bug fixes and style changes

  • Handle sync* and async* functions with => bodies.
  • Fix bug where parameter metadata wouldn't always split when it should.
  • Don't split after < in collection literals.
  • Better indentation of multiline function types inside type argument lists.

Internal changes

  • Use typed _visitFunctionOrMethodDeclaration instead of dynamically typed.
  • Fix metadata test to not fail when record syntax makes whitespace between metadata annotation names and ( significant (sdk#50769).
  • Require Dart 2.19.
  • Require package:analyzer ^5.7.0.

2.2.5

  • Format unnamed libraries.
  • Require Dart 2.17.

2.2.4

  • Unify how brace-delimited syntax is formatted. This is mostly an internal refactoring, but slightly changes how a type body containing only an inline block comment is formatted.
  • Refactor Chunk to store split before text instead of after. This mostly does not affect the visible behavior of the formatter, but a few edge cases are handled slightly differently. These are all bug fixes where the previous behavior was unintentional. The changes are:
  • Consistently discard blank lines between a { or [ and a subsequent comment. It used to do this before the { in type bodies, but not switch bodies, optional parameter sections, or named parameter sections.
  • Don't allow splitting an empty class body.
  • Allow splitting after an inline block comment in some places where it makes sense.
  • Don't allow a line comment in an argument list to cause preceding arguments to be misformatted.
  • Remove blank lines after a line comment at the end of a body.
  • Require package:analyzer >=4.4.0 <6.0.0.

2.2.3

  • Allow the latest version of package:analyzer.

2.2.2

  • Format named arguments anywhere (#1072).
  • Format enhanced enums (#1075).
  • Format "super." parameters (#1091).

2.2.1

  • Require package:analyzer version 2.6.0.
  • Use NamedType instead of TypeName.

2.2.0

  • Fix analyzer dependency constraint (#1051).

2.1.1

  • Republish 2.0.3 as 2.1.1 in order to avoid users getting 2.1.0, which has a bad dependency constraint (#1051).

2.1.0

  • Support generic function references and constructor tear-offs (#1028).

2.0.3

2.0.2

  • Don't unnecessarily split argument lists with /* */ comments (#837).
  • Return correct exit code from FormatCommand when formatting stdin (#1035).
  • Always split cascades with multiple sections (#1006).
  • Don't indent cascades farther than their receiver method chains.
  • Optimize line splitting cascades (#811).
  • Split empty catch blocks with finally clauses (#1029).
  • Split empty catch blocks with catches after them.
  • Allow the latest version of package:analyzer.

2.0.1

  • Support triple-shift >>> and >>>= operators (#992).
  • Support non-function type aliases (#993).
  • Correct constructor initializer indentation after required (#1010).

2.0.0

  • Migrate to null safety.

1.3.14

  • Add support for generic annotations.
  • FormatCommand.run() now returns the value set in exitCode during formatting.

1.3.13

  • Allow the latest version of package:analyzer.

1.3.12

  • Allow the latest versions of package:args and package:pub_semver.

1.3.11

  • Remove use of deprecated analyzer API and List constructor.
  • Fix performance issue with constructors that have no initializer list.

1.3.10

  • Allow analyzer version 0.41.x.

1.3.9

  • Don't duplicate comments on chained if elements (#966).

1.3.8

  • Preserve ? in initializing formal function-typed parameters (#960).

1.3.7

  • Split help into verbose and non-verbose lists (#938).
  • Don't crash when non-ASCII whitespace is trimmed (#901).
  • Split all conditional expressions (?:) when they are nested (#927).
  • Handle external and abstract fields and variables (#946).

1.3.6

  • Change the path used in error messages when reading from stdin from "" to "stdin". The former crashes on Windows since it is not a valid Windows pathname. To get the old behavior, pass --stdin-name=<stdin>.

1.3.5

  • Restore command line output accidentally removed in 1.3.4.

1.3.4

  • Add --fix-single-cascade-statements.
  • Correctly handle var in --fix-function-typedefs (#826).
  • Preserve leading indentation in fixed doc comments (#821).
  • Split outer nested control flow elements (#869).
  • Always place a blank line after script tags (#782).
  • Don't add unneeded splits on if elements near comments (#888).
  • Indent blocks in initializers of multiple-variable declarations.
  • Update the null-aware subscript syntax from ?.[] to ?[].

1.3.3

  • Support package:analyzer 0.39.0.

1.3.2

  • Restore the code that publishes the dart-style npm package.
  • Preserve comma after nullable function-typed parameters (#862).

1.3.1

  • Fix crash in formatting complex method chains (#855).

1.3.0

  • Add support for formatting extension methods (#830).
  • Format ? in types.
  • Format the late modifier.
  • Format the required modifier.
  • Better formatting of empty spread collections (#831).
  • Don't force split before . when the target is parenthesized (#704).

1.2.10

  • Format null assertion operators.
  • Better formatting for invocation expressions inside method call chains.
  • Support package:analyzer 0.38.0.

1.2.9

  • Support package:analyzer 0.37.0.

1.2.8

  • Better indentation of function expressions inside trailing comma argument lists. (Thanks a14@!)
  • Avoid needless indentation on chained if-else elements (#813).

1.2.7

  • Improve indentation of adjacent strings inside => functions.

1.2.6

  • Properly format trailing commas in assertions.

  • Improve indentation of adjacent strings. This fixes a regression introduced in 1.2.5 and hopefully makes adjacent strings generally look better.

    Adjacent strings in argument lists now format the same regardless of whether the argument list contains a trailing comma. The rule is that if the argument list contains no other strings, then the adjacent strings do not get extra indentation. This keeps them lined up when doing so is unlikely to be confused as showing separate independent string arguments.

    Previously, adjacent strings were never indented in argument lists without a trailing comma and always in argument lists that did. With this change, adjacent strings are still always indented in collection literals because readers are likely to interpret a series of unindented lines there as showing separate collection elements.

1.2.5

  • Add support for spreads inside collections (#778).
  • Add support for if and for elements inside collections (#779).
  • Require at least Dart 2.1.0.
  • Require analyzer 0.36.0.

1.2.4

  • Update to latest analyzer package AST API.
  • Tweak set literal formatting to follow other collection literals.

1.2.3

  • Update package:analyzer constraint to '>=0.33.0 <0.36.0'.

1.2.2

  • Support set literals (#751).

1.2.1

  • Add --fix-function-typedefs to convert the old typedef syntax for function types to the new preferred syntax.

1.2.0

  • Add --stdin-name to specify name shown when reading from stdin (#739).
  • Add --fix-doc-comments to turn /** ... */ doc comments into /// (#730).
  • Add support for new mixin syntax (#727).
  • Remove const in all metadata annotations with --fix-optional-const` (#720).

1.1.4

  • Internal changes to support using the new common front end for parsing.

1.1.3

  • Preserve whitespace in multi-line strings inside string interpolations (#711). Note! This bug means that dart_style 1.1.2 may make semantics changes to your strings. You should avoid that version and use 1.1.3.

  • Set max SDK version to <3.0.0, and adjusted other dependencies.

1.1.2

  • Don't split inside string interpolations.

1.1.1

  • Format expressions in string interpolations (#226).
  • Apply fixes inside string interpolations (#707).

1.1.0

  • Add support for "style fixes", opt-in non-whitespace changes.
  • Add fix to convert : to = as the named parameter default value separator.
  • Add fix to remove new keywords.
  • Add fix to remove unneeded const keywords.
  • Uniformly format constructor invocations and other static method calls.
  • Don't crash when showing parse errors in Dart 2 mode (#697).

1.0.14

  • Support metadata on enum cases (#688).

1.0.13

  • Support the latest release of package:analyzer.

1.0.12

  • Fix another failure when running in Dart 2.

1.0.11

  • Fix cast failure when running in Dart 2.
  • Updated SDK version to 2.0.0-dev.17.0.
  • Force split in empty then block in if with an else (#680).

1.0.10

  • Don't split before . if the target expression is an argument list with a trailing comma (#548, #665).
  • Preserve metadata on for-in variables (#648).
  • Support optional new/const (#652).
  • Better formatting of initialization lists after trailing commas (#658).

1.0.9

  • Updated tests. No user-facing changes.

1.0.8

  • Support v1 of pkg/args.

1.0.7

  • Format multiline strings as block arguments (#570).
  • Fix call to analyzer API.
  • Support assert in initializer list experimental syntax (#522).

1.0.6

  • Support URIs in part-of directives (#615).

1.0.5

  • Support the latest version of pkg/analyzer.

1.0.4

  • Ensure formatter throws an exception instead of introducing non-whitespace changes. This sanity check ensures the formatter does not erase user code when the formatter itself contains a bug.
  • Preserve type arguments in generic typedefs (#619).
  • Preserve type arguments in function expression invocations (#621).

1.0.3

  • Preserve type arguments in generic function-typed parameters (#613).

1.0.2

  • Support new generic function typedef syntax (#563).

1.0.1

  • Ensure space between - and -- (#170).
  • Preserve a blank line between enum cases (#606).

1.0.0

  • Handle mixed block and arrow bodied function arguments uniformly (#500).
  • Don't add a spurious space after "native" (#541).
  • Handle parenthesized and immediately invoked functions in argument lists like other function literals (#566).
  • Preserve a blank line between an annotation and the first directive (#571).
  • Fix splitting in generic methods with => bodies (#584).
  • Allow splitting between a parameter name and type (#585).
  • Don't split after < when a collection is in statement position (#589).
  • Force a split if the cascade target has non-obvious precedence (#590).
  • Split more often if a cascade target contains a split (#591).
  • Correctly report unchanged formatting when reading from stdin.

0.2.16

  • Don't discard type arguments on method calls with closure arguments (#582).

0.2.15

  • Support covariant modifier on methods.

0.2.14

  • Update to analyzer 0.29.3. This should make dart_style a little more resilient to breaking changes in analyzer that add support for new syntax that dart_style can't format yet.

0.2.13

  • Support generic method parameters as well as arguments.

0.2.12

  • Add support for assert() in constructor initializers.
  • Correctly indent the right-hand side of is and as expressions.
  • Avoid splitting in index operators when possible.
  • Support generic methods (#556).

0.2.11+1

  • Fix test to not depend on analyzer error message.

0.2.11

  • Widen dependency on analyzer to allow 0.29.x.

0.2.10

  • Handle metadata annotations before parameters with trailing commas (#520).
  • Always split enum declarations if they end in a trailing comma (#529).
  • Add --set-exit-if-changed to set the exit code on a change (#365).

0.2.9

  • Require analyzer 0.27.4, which makes trailing commas on by default.

0.2.8

  • Format parameter lists with trailing commas like argument lists (#447).

0.2.7

  • Make it strong mode clean.
  • Put labels on their own line (#43).
  • Gracefully handle IO errors when failing to overwrite a file (#473).
  • Add a blank line after local functions, to match top level ones (#488).
  • Improve indentation in non-block-bodied control flow statements (#494).
  • Better indentation on very long return types (#503).
  • When calling from JS, guess at which error to show when the code cannot be parsed (#504).
  • Force a conditional operator to split if the condition does (#506).
  • Preserve trailing commas in argument and parameter lists (#509).
  • Split arguments preceded by comments (#511).
  • Remove newlines after script tags (#513).
  • Split before a single named argument if the argument itself splits (#514).
  • Indent initializers in multiple variable declarations.
  • Avoid passing an invalid Windows file URI to analyzer.
  • Always split comma-separated sequences that contain a trailing comma.

0.2.6

  • Support deploying an npm package exporting a formatCode method.

0.2.4

  • Better handling for long collections with comments (#484).

0.2.3

  • Support messages in assert() (#411).
  • Don't put spaces around magic generic method annotation comments (#477).
  • Always put member metadata annotations on their own line (#483).
  • Indent functions in named argument lists with non-functions (#478).
  • Force the parameter list to split if a split occurs inside a function-typed parameter.
  • Don't force a split for before a single named argument if the argument itself splits.

0.2.2

  • Upgrade to analyzer 0.27.0.
  • Format configured imports and exports.

0.2.1

  • --version command line argument (#240).
  • Split the first . in a method chain if the target splits (#255).
  • Don't collapse states that differ by unbound rule constraints (#424).
  • Better handling for functions in method chains (#367, #398).
  • Better handling of large parameter metadata annotations (#387, #444).
  • Smarter splitting around collections in named parameters (#394).
  • Split calls if properties in a chain split (#399).
  • Don't allow splitting inside empty functions (#404).
  • Consider a rule live if it constrains a rule in the overflow line (#407).
  • Allow splitting in prefix expressions (#410).
  • Correctly constrain collections in argument lists (#420, #463, #465).
  • Better indentation of collection literals (#421, #469).
  • Only show a hidden directory once in the output (#428).
  • Allow splitting between type and variable name (#429, #439, #454).
  • Better indentation for binary operators in => bodies (#434.
  • Tweak splitting around assignment (#436, #437).
  • Indent multi-line collections in default values (#441).
  • Don't drop metadata on part directives (#443).
  • Handle if statements without curly bodies better (#448).
  • Handle loop statements without curly bodies better (#449).
  • Allow splitting before get and set (#462).
  • Add --indent to specify leading indent (#464).
  • Ensure collection elements line split separately (#474).
  • Allow redirecting constructors to wrap (#475).
  • Handle index expressions in the middle of call chains.
  • Optimize splitting lines with many rules.

0.2.0

  • Treat functions nested inside function calls like block arguments (#366).

0.2.0-rc.4

  • Smarter indentation for function arguments (#369).

0.2.0-rc.3

  • Optimize splitting complex lines (#391).

0.2.0-rc.2

  • Allow splitting between adjacent strings (#201).
  • Force multi-line comments to the next line (#241).
  • Better splitting in metadata annotations in parameter lists (#247).
  • New optimized line splitter (#360, #380).
  • Allow splitting after argument name (#368).
  • Parsing a statement fails if there is unconsumed input (#372).
  • Don't force for fully split if initializers or updaters do (#375, #377).
  • Split before deferred (#381).
  • Allow splitting on as and is expressions (#384).
  • Support null-aware operators (?., ??, and ??=) (#385).
  • Allow splitting before default parameter values (#389).

0.2.0-rc.1

  • BREAKING: The indent argument to new DartFormatter() is now a number of spaces, not indentation levels.

  • This version introduces a new n-way constraint system replacing the previous binary constraints. It's mostly an internal change, but allows us to fix a number of bugs that the old solver couldn't express solutions to.

    In particular, it forces argument and parameter lists to go one-per-line if they don't all fit in two lines. And it allows function and collection literals inside expressions to indent like expressions in some contexts. (#78, #97, #101, #123, #139, #141, #142, #143, et. al.)

  • Indent cascades more deeply when the receiver is a method call (#137).

  • Preserve newlines in collections containing line comments (#139).

  • Allow multiple variable declarations on one line if they fit (#155).

  • Prefer splitting at "." on non-identifier method targets (#161).

  • Enforce a blank line before and after classes (#168).

  • More precisely control newlines between declarations (#173).

  • Preserve mandatory newlines in inline block comments (#178).

  • Splitting inside type parameter and type argument lists (#184).

  • Nest blocks deeper inside a wrapped conditional operator (#186).

  • Split named arguments if the positional arguments split (#189).

  • Re-indent line doc comments even if they are flush left (#192).

  • Nest cascades like expressions (#200, #203, #205, #221, #236).

  • Prefer splitting after => over other options (#217).

  • Nested non-empty collections force surrounding ones to split (#223).

  • Allow splitting inside with and implements clauses (#228, #259).

  • Allow splitting after = in a constructor initializer (#242).

  • If a => function's parameters split, split after the => too (#250).

  • Allow splitting between successive index operators (#256).

  • Correctly indent wrapped constructor initializers (#257).

  • Set failure exit code for malformed input when reading from stdin (#359).

  • Do not nest blocks inside single-argument function and method calls.

  • Do nest blocks inside => functions.

0.1.8+2

  • Allow using analyzer 0.26.0-alpha.0.

0.1.8+1

  • Use the new test package runner internally.

0.1.8

  • Update to latest analyzer and args packages.
  • Allow cascades with repeated method names to be one line.

0.1.7

  • Update to latest analyzer (#177).
  • Don't discard annotations on initializing formals (#197).
  • Optimize formatting deeply nested expressions (#108).
  • Discard unused nesting level to improve performance (#108).
  • Discard unused spans to improve performance (#108).
  • Harden splits that contain too much nesting (#108).
  • Try to avoid splitting single-element lists (#211).
  • Avoid splitting when the first argument is a function expression (#211).

0.1.6

  • Allow passing in selection to preserve through command line (#194).

0.1.5+1, 0.1.5+2, 0.1.5+3

  • Fix test files to work in main Dart repo test runner.

0.1.5

  • Change executable name from dartformat to dartfmt.

0.1.4

  • Don't mangle comma after function-typed initializing formal (#156).
  • Add --dry-run option to show files that need formatting (#67).
  • Try to avoid splitting in before index argument (#158, #160).
  • Support await for statements (#154).
  • Don't delete commas between enum values with doc comments (#171).
  • Put a space between nested unary - calls (#170).
  • Allow -t flag to preserve compatibility with old formatter (#166).
  • Support --machine flag for machine-readable output (#164).
  • If no paths are provided, read source from stdin (#165).

0.1.3

  • Split different operators with the same precedence equally (#130).
  • No spaces for empty for loop clauses (#132).
  • Don't touch files whose contents did not change (#127).
  • Skip formatting files in hidden directories (#125).
  • Don't include trailing whitespace when preserving selection (#124).
  • Force constructor initialization lists to their own line if the parameter list is split across multiple lines (#151).
  • Allow splitting in index operator calls (#140).
  • Handle sync* and async* syntax (#151).
  • Indent the parameter list more if the body is a wrapped "=>" (#144).

0.1.2

  • Move split conditional operators to the beginning of the next line.

0.1.1

  • Support formatting enums (#120).
  • Handle Windows line endings in multiline strings (#126).
  • Increase nesting for conditional operators (#122).