Minor:
- External syntax: make the
external ... = ""
part optional (@romanschejbal)#2464external myFn: (string) => unit;
is now equivalent toexternal myFn: (string) => unit = "";
Fixes:
- Fixes issues where
method
and similar keywords will be transformed tomethod_
(@cristianoc) #2530
Fixes:
- Fix regression where keywords were not renamed correctly (@cristianoc) #2520
- Fix regression where quoted object attributes / labeled arguments weren't renamed correctly (@anmonteiro) #2509
- Fix issue where JSX braces break into multiple lines (@anmonteiro) #2503
Others:
- Improve bspacks process for 4.06 and add esy workflow for building refmt.js
- 🎉 MUCH better parsing error locations - more reliable autocomplete 🎉 (@let-def)[https://github.com/let-def] (#2439)
- Rebased the better error recovery diff onto 4.09 OCaml @anmonteiro (#2480)
- Fix printing of fragments inside JSX props @anmonteiro (#2463)
- Modernize CI based on latest hello-reason CI @jordwalke (#2479)
- Fix bug that caused necessary braces to be removed @anmonteiro (#2481)
- Make prepublish script auto-generate opam files @jordwalke (#2468)
- Fix brace removal with pipe-first in JSX attributes @bloodyowl (#2474)
- CI Improvements @ulrikstrid (#2459)
- Make sure you can still include rtop from inside utop @sync (#2466)
- Support OCaml 4.09 (2450).
- Improve opam packaging config (2431).
- Improve repo to support esy resolutions to master branch (31225fc0
Improvements:
- Support OCaml 4.08 (2426).
Fixes:
- Print attributes in class fields 2414.
- Preserve function body braces when Pexp_fun is an argument to a function commit
- Prettify try to hug braces 2378
- Fix operator swap for type declarations commit
- Fix JSX removing semicolons commit
- Better formatting of Pexp_lazy commit
Not released to @esy-ocaml/reason - would have required a major version bump. These features will be released in 3.5.0.
Improvements:
- Parse and print parentheses around inline record declarations (2363)
- Proper outcome printing (for editor and build) of inline records (2336)
- Proper outcome printing of types with inline records (parentheses) (2370)
Fixes:
- Don't remove semis in blocks inside ternary expressions as jsx children (2352).
- Handle single line comments ending with end-of-file (2353).
Fixes:
- Don't pun record types if they contain attributes (2316).
Improvements:
// line comments
! (2268). Make sure that your constraints onrefmt
versions for native projects. Specify a version >=3.4.0
if you use//
comments in your Reason code. Specifiy ranges like3.4.0-3.5.0
.- Better whitespace interleaving (1990).
- Allow Reason to be used with Merlin Natively on Windows (2256).
- Improved Ternary Formatting (2294).
Fixes:
- Pipe first braces (2133, 2148).
- Better rtop
use
directives (2146, 2147). foo(~Foo.a)
becomingfoo(~Fooa=Foo.a)
(2136).- Parse
<div> ...c</div>
correctly (2137). - Invalid formatting of first-class module with type constraint (2151).
- Precedence printing of pipe first with underscore sugar as JSX child (2159).
- Correct location for JSX name & extension expression (2166, 2162).
- Lack of space after
module type of
(2175). - Outcome printer (editor & interface generator) function signature (2185).
- Precedence issue with unary operators and labeled arguments (2201).
- Type printing of polymorphic variants row fields (2191).
- Pattern parsing inside ternary expressions (2188).
Improvements:
- Preserve empty lines in records and bs objects (2152).
- Make
let not = blabla
work (not is a keyword) (2197). - Format doc comments on variant leafs with consistency (2194)
- Single pipe first printing layout (2193).
- Performance. One case where the printer took exponential time (2195).
- More fixes for pipe first (2120, 2119, 2111).
- Fix regressed printing of first-class module (2124).
- Fix local open printing for
bs.obj
(2123). - fix printing of
foo[(bar + 1)]
tofoo[bar + 1]
(2110). - Only wrap
fun
in parentheses when necessary (2033). - Change all precedence printing to braces for consistency inside JSX (2106).
- Format docblock comments above std attrs on record rows (2105).
Big release! No breaking change. Big shout out to @anmonteiro and @iwanKaramazow!
Major:
- Pipe first
|.
now got a Reason sugar,->
, with better precedence support than the former (1999, 2078, 2092, 2082, 2087, 2055). - ReasonReact JSX PPX DOM children spread (2095).
- ReasonReact JSX PPX fragment (2091).
- Other ReasonReact JSX PPX fixes (2088, 2060, 2027, 2024, 2007, 2021, 1963).
- Semicolon relaxation & reporting improvements (2040, 2012, 1968).
- Module parsing & formatting improvements (2061, 2059, 1984, 1949, 1946, 2062).
- Remove extra space in some places after formatting (2047, 2041, 1969, 1966, 2097).
- Much better
...
spread errors for everything (1973). - Fix
foo##bar[baz]
,foo->bar^##baz
and other precedences (2050, 2055, 2044, 2044). - Milder "unknown syntax error" message (1962).
Others:
- Parentheses hugging for multi-line
Js.t({foo: bar})
(2074). - Correctly parse prefix ops in labeled parameters (2071).
- Attach doc attributes before extension sugar (2069).
- Support non-parenthesized label colon type equal optional in type declarations (2058).
- Printf uncurried application when last argument is a callback (2064).
- OCaml rtop syntax printing( 2031).
- Fix Bigarray syntax (2045).
- Parse
M.[]
(2043). - Fix printing of polymorphic variant with annotation (2019).
- Format GADT type variants better (2016).
- Better autocomplete for Merlin (1998).
- Print newline after doc comments before attributes (1869).
- Fix inconsistent printing of opening extension expressions (1979).
- Fix error when parsing
let x=-.1;
and others (1945). - Arguments no longer accidentally punned when they carry attributes (1955).
See the blog post here.
- WHITESPACES IMPROVEMENTS ARE HERE: empty lines between most things will now be preserved when you format your code! Multiple lines still collapse to one line in most cases (1921, 1919, 1876).
- Semicolon relaxation: see blog post (1887).
- Fix parsing & printing of es6 function syntax inside attributes (1943).
- List spread now has better error (1925).
- Functor in JSX tags (1927).
- Better comment printing (1940, 1934).
- Various other printer improvements.
- New pipe sugar for function call argument in arbitrary position:
foo |> map(_, addOne) |> filter(_, isEven)
(1804). - BuckleScript [@bs] uncurry sugar:
[@bs] foo(bar, baz)
is nowfoo(. bar, baz)
. Same for declaration (1803, 1832). - Trailing commas for record, list, array, and everything else (1775, 1821)!
- Better comments interleaving (1769, 1770, 1817)
- Better JSX printing:
<Foo bar=<Baz />>
,<div><span></span></div>
(1745, 1762). - switch now mandates parentheses around the value. Non-breaking, as we currently support parentheses-less syntax but print parens (1720, 1733).
- Attributes on open expressions (1833).
- Better OCaml 4.06 support (1709).
- Extension points sugar:
let%foo a = 1
(1703)! - Final expression in a function body now also has semicolon. Easier to add new expressions afterward now (1693)!
- Better editor printing (outcome printer) of Js.t object types, @bs types, unary variants and infix operators (1688, 1784, 1831).
- Parser doesn't throw Location.Error anymore; easier exception handling when refmt is used programmatically (1695).
- Default print width is now changed from 100 to 80 (1675).
- Much better callback formatting (1664)!
- Single argument function doesn't require wrapping the argument with parentheses anymore (1692).
- Printer more lenient when user writes
[%bs.obj {"foo": bar}]
. Probably a confusion with just{"foo": bar}
(1659). - Better formatting for variants constructors with attributes (1668, 1677).
- Fix exponentiation operator printing associativity (1678).
- JSX: fix most of the parsing errors (#856 #904 1181 1263 1292)!! Thanks @IwanKaramazow!
- In-editor syntax error messages are now fixed! They should be as good as the terminal ones (1654).
- Polymorphic variants can now parse and print `foo(()) as `foo() (1560).
- Variant values with annotations like
Some((x: string))
can now beSome(x: string)
(1576). - Remove few places remaining that accidentally print
fun
for functions (1588). - Better record & object printing (1593, 1596).
- Fewer unnecessary wrappings in type declarations and negative constants (1616, 1634).
- Parse and print attributes on object type rows (1637).
- Better printing of externals with attributes (1640).
- Better printing for multiple type equations in a module type in a function argument (1641).
- Better printing for unary -. in labeled argument (1642).
Our biggest release! Please see our blog post on https://reasonml.github.io/blog/2017/10/27/reason3.html.
Summary: this is, practically speaking, a non-breaking change. You can mix and match two projects with different syntax versions in BuckleScript 2 (which just got release too! Go check), and they'll Just Work (tm).
To upgrade your own project, we've released a script, https://github.com/reasonml/upgradeSyntaxFrom2To3
Improvements:
- Much better printing for most common idioms.
- Even better infix operators formatting for
==
,&&
,>
and the rest (1380, 1386, etc.). - More predictable keyword swapping behavior (1539).
- BuckleScript's
Js.t {. foo: bar}
now formats to{. "foo": bar}
, just like its value counterpart ([%bs.obj {foo: 1}]
to{"foo": bar}
. [@foo]
,[@@foo]
and[@@@foo]
are now unified into[@foo]
and placed in front instead of at the back.!
is now the logical negation. It wasnot
previously.- Dereference was
!
. Now it's a postfix^
. - Labeled argument with type now has punning!
- String concat is now
++
instead of the old^
. - For native, Reason now works on OCaml 4.05 and the latest topkg (1438).
- Record field punning for module field prefix now prints well too:
{M.x, y}
is{M.x: x, y: y}
. - JSX needs
{}
like in JS. - Fix reason-specific keywords printing in interface files (e.g.
==
,match
,method
). - Record punning with renaming (1517).
- The combination of function label renaming + type annotation + punning is now supported!
- Label is now changed from
::foo
back to~foo
, just like for OCaml. - Fix LOTS of bugs regarding parsing & formatting (closing around 100 improvement-related issues!).
- Official
refmt.js
, with public API. SeeREADME.md
. - Official
refmt
native public API too. - New JS application/abstraction syntax. Yes yes, we know. Despite the 100+ fixes, this one's all you cared about. Modern software engineering ¯\_(ツ)_/¯. Please do read the blog post though.
Breaking Changes:
- Remove
--use-stdin
and--is-interface-pp
option from refmt; they've been deprecated for a long time now - Remove unused binaries:
reup
, etc. - Remove the old
reactjs_jsx_ppx.ml
. You've all been onreactjs_jsx_ppx_2.ml
for a long time now. - Reserved keywords can no longer be used as an
external
declaration's labels.
Deprecated:
- Deprecate
--add-printers
option from refmt; we'll have a better strategy soon.
- Much better infix operators (e.g. |>) formatting! (1259)
- Official
refmt.js
, with public API. SeeREADME.md
. We've back-ported this into the 1.13.7 release =)
- Changelog got sent into a black hole