Version 4.1.0

Author: soutaro

CHANGELOG.md

@@ -1,5 +1,93 @@
 # CHANGELOG
 
+## 4.1.0 (2026-07-27)
+
+RBS 4.1 ships with JRuby support. The RBS parser is written in plain C without depending on the Ruby C API, so it is compiled to WebAssembly and runs on a Wasm runtime, with the parsed AST serialized in a binary format and decoded into RBS objects. The full test suite runs on JRuby in CI.
+
+The inline RBS syntax gets three new features: singleton method definitions (`def self.`), the `module-self` constraint, and instance variable annotations in `module` declarations. Note that RBS inline is still experimental and may change in future releases.
+
+This release also introduces `RBS::Rewriter`, an API to edit RBS source text while preserving the surrounding content, which `rbs annotate` is now built on. Parsing performance is improved by interning type names in a shared trie and reducing allocations per node.
+
+`RBS::Prototype::Runtime`, the RDoc plugin parser, and the top-level `float` type alias are deprecated in this release.
+
+### Signature updates
+
+**Updated classes/modules/methods:** `ARGF`, `Array`, `CSV`, `Class`, `Delegator`, `Digest`, `ERB`, `Enumerable`, `Enumerator`, `Enumerator::Product`, `Etc`, `File`, `File::Constants`, `File::Stat`, `FileUtils`, `Float`, `Gem`, `Hash`, `IO`, `IPAddr`, `Integer`, `JSON`, `Kernel`, `MatchData`, `Module`, `Monitor`, `Numeric`, `ObjectSpace::WeakKeyMap`, `OpenSSL`, `Pathname`, `RBS::Ops`, `Ractor`, `Range`, `Resolv`, `RubyVM::InstructionSequence`, `Set`, `Shellwords`, `String`, `StringIO`, `StringScanner`, `Struct`, `Tempfile`, `Thread`, `Timeout`, `TSort`, `URI::Generic`, `Zlib::GzipReader`, `Zlib::ZStream`
+
+* Remove stale Float constants and add a constant drift test ([#2994](https://github.com/ruby/rbs/pull/2994))
+* Update RDoc comments with Ruby 4.0.6 ([#3035](https://github.com/ruby/rbs/pull/3035))
+* Add a dependency on tempfile. ([#3025](https://github.com/ruby/rbs/pull/3025))
+* Support `%a{implicitly-returns-nil}` on `MatchData#[]` ([#2990](https://github.com/ruby/rbs/pull/2990))
+* Update `Array` ([#2987](https://github.com/ruby/rbs/pull/2987))
+* Allow nil output buffers for reader methods ([#3002](https://github.com/ruby/rbs/pull/3002))
+* Add stdlib signature tests for #2967 ([#2989](https://github.com/ruby/rbs/pull/2989))
+* Update `Integer`, phase 1 ([#2995](https://github.com/ruby/rbs/pull/2995))
+* Add RBS::Ops  ([#2934](https://github.com/ruby/rbs/pull/2934))
+* Update Module ([#2933](https://github.com/ruby/rbs/pull/2933))
+* Correct core/stdlib signatures to match Ruby 4.0 ([#2967](https://github.com/ruby/rbs/pull/2967))
+* Revert Digest::Class method changes ([#2980](https://github.com/ruby/rbs/pull/2980))
+* Add stdlib tests for updated StringScanner signatures ([#2968](https://github.com/ruby/rbs/pull/2968))
+* Update `StringScanner` signatures to match strscan 3.1.6 ([#2959](https://github.com/ruby/rbs/pull/2959))
+* Remove StringScanner methods absent from the latest Ruby release ([#2961](https://github.com/ruby/rbs/pull/2961))
+* Fix `Resolv#initialize` signature: array of resolvers + `use_ipv6:` ([#2960](https://github.com/ruby/rbs/pull/2960))
+* [Hash] Update Hash's signatures and tests to be correct ([#2694](https://github.com/ruby/rbs/pull/2694))
+* update rbs signatures to be more consistent with generics ([#2867](https://github.com/ruby/rbs/pull/2867))
+* Use top-level `path` in fileutils.rbs to suppress deprecation warning ([#2949](https://github.com/ruby/rbs/pull/2949))
+* Update File::Constants and File::Stat ([#2942](https://github.com/ruby/rbs/pull/2942))
+* Add signature for `RubyVM::InstructionSequence.of` ([#2916](https://github.com/ruby/rbs/pull/2916))
+* fix OpenSSL#session_new_cb signature ([#2924](https://github.com/ruby/rbs/pull/2924))
+* [Class] update class.rbs ([#2898](https://github.com/ruby/rbs/pull/2898))
+* Deprecate top-level float ([#2695](https://github.com/ruby/rbs/pull/2695))
+* [Kernel] Updated querying methods ([#2685](https://github.com/ruby/rbs/pull/2685))
+
+### Library changes
+
+* Convert character offset to byte offset in parse_inline_*_annotation ([#2945](https://github.com/ruby/rbs/pull/2945))
+* Guard against underflow when sysconf(_SC_PAGESIZE) returns 0 ([#3031](https://github.com/ruby/rbs/pull/3031))
+* Report invalid UTF-8 byte in a comment as a parsing error ([#2983](https://github.com/ruby/rbs/pull/2983))
+* Fetch Chicory/ASM jars from Maven instead of bundling in gem ([#3019](https://github.com/ruby/rbs/pull/3019))
+* Add write barrier protection to RBS Location objects ([#3022](https://github.com/ruby/rbs/pull/3022))
+* Rename parameter in rbs_intern_type_name for clarity ([#3023](https://github.com/ruby/rbs/pull/3023))
+* Deprecate RDoc plugin parser ([#3016](https://github.com/ruby/rbs/pull/3016))
+* Run the test suite on JRuby (JRuby support, step 4) ([#3008](https://github.com/ruby/rbs/pull/3008))
+* Run the RBS parser on JRuby via WebAssembly (JRuby support, step 3) ([#3000](https://github.com/ruby/rbs/pull/3000))
+* Add binary serialization of the parsed AST (JRuby support, step 2) ([#2999](https://github.com/ruby/rbs/pull/2999))
+* Build the RBS parser as a WebAssembly module (JRuby support, step 1) ([#2998](https://github.com/ruby/rbs/pull/2998))
+* Reject reversed position ranges in parser/lexer entrypoints ([#2974](https://github.com/ruby/rbs/pull/2974))
+* Fix lexer infinite loop / abort on invalid UTF-8 byte ([#2973](https://github.com/ruby/rbs/pull/2973))
+* Flyweight TypeName / Namespace cached in a shared trie ([#2957](https://github.com/ruby/rbs/pull/2957))
+* Reduce Hash allocation per `Node` creation ([#2946](https://github.com/ruby/rbs/pull/2946))
+* Tidy `ast_translation.c` ([#2947](https://github.com/ruby/rbs/pull/2947))
+* Auto-generate rbs_ast_ruby_annotations_t union from config.yml ([#2939](https://github.com/ruby/rbs/pull/2939))
+* Speed up RBS::InlineParser on large sources with non-ASCII characters ([#2950](https://github.com/ruby/rbs/pull/2950))
+* Support `def self.method_name` singleton method in inline parser ([#2935](https://github.com/ruby/rbs/pull/2935))
+* This is not prism ([#2951](https://github.com/ruby/rbs/pull/2951))
+* Add RBS::Rewriter and use it in rbs annotate ([#2927](https://github.com/ruby/rbs/pull/2927))
+* Add nullability annotations to AST pointer types ([#2922](https://github.com/ruby/rbs/pull/2922))
+* Support `module-self` inline annotation ([#2921](https://github.com/ruby/rbs/pull/2921))
+* Inline instance variable annotation in module declaration ([#2919](https://github.com/ruby/rbs/pull/2919))
+
+#### rbs prototype
+
+* Fix nested declarations in rbs prototype rbi ([#3029](https://github.com/ruby/rbs/pull/3029))
+* Deprecate prototype runtime ([#2956](https://github.com/ruby/rbs/pull/2956))
+
+#### rbs collection
+
+* Clean up partial clone before falling back to full clone ([#2978](https://github.com/ruby/rbs/pull/2978))
+* Suppress spurious warning for non-gem stdlib libraries ([#2929](https://github.com/ruby/rbs/pull/2929))
+
+### Miscellaneous
+
+* Fix Lint/DuplicateMethods in StringIO_test.rb ([#3010](https://github.com/ruby/rbs/pull/3010))
+* Compressed files must be opened in binary mode ([#2981](https://github.com/ruby/rbs/pull/2981))
+* Fix flaky DirSingletonTest GC failures in test_fchdir and test_for_fd ([#3004](https://github.com/ruby/rbs/pull/3004))
+* Add TruffleRuby CI job ([#2996](https://github.com/ruby/rbs/pull/2996))
+* Update the target Ruby version notes to the latest release ([#2962](https://github.com/ruby/rbs/pull/2962))
+* Update docs/inline.md to match current inline parser behavior ([#2953](https://github.com/ruby/rbs/pull/2953))
+* ci: skip Gemfile.lock BUNDLED WITH on ruby-head ([#2952](https://github.com/ruby/rbs/pull/2952))
+* Remove `logger` from sig dependencies ([#2904](https://github.com/ruby/rbs/pull/2904))
+
 ## 4.0.2 (2026-03-25)
 
 ### Library changes

Gemfile.lock

@@ -22,7 +22,7 @@ GIT
 PATH
   remote: .
   specs:
-    rbs (4.1.0.pre.2)
+    rbs (4.1.0)
       logger
       prism (>= 1.6.0)
       tsort

lib/rbs/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RBS
-  VERSION = "4.1.0.pre.2"
+  VERSION = "4.1.0"
 end