v2.12.0

What's Changed

• Improve floating point generation to not use scientific notation as much.
• Include line and column in parser errors. Both in the message and as exception attributes.
• Handle non-string hash keys with broken to_s implementations.
• JSON.generate now uses SSE2 (x86) or NEON (arm64) instructions when available to escape strings.

Full Changelog: v2.11.3...v2.12.0

v2.11.3

What's Changed

• Fix a regression in JSON.pretty_generate that could cause indentation to be off once some #to_json has been called.

Full Changelog: v2.11.2...v2.11.3

v2.11.2

What's Changed

• Bring back JSON::PRETTY_STATE_PROTOTYPE with a deprecation

Full Changelog: v2.11.1...v2.11.2

v2.11.1

What's Changed

• Add back JSON.restore, JSON.unparse, JSON.fast_unparse and JSON.pretty_unparse.
  These were deprecated 16 years ago, but never emited warnings, only undocumented, so are
  still used by a few gems.

Full Changelog: v2.11.0...v2.11.1

v2.11.0

What's Changed

• Optimize Integer generation to be ~1.8x faster.
• Optimize Float generation to be ~10x faster.
• Fix JSON.load proc argument to substitute the parsed object with the return value.
  This better match Marshal.load behavior.
• Deprecate JSON.fast_generate (it's not any faster, so pointless).
• Deprecate JSON.load_default_options.
• Deprecate JSON.unsafe_load_default_options.
• Deprecate JSON.dump_default_options.
• Deprecate Kernel#j
• Deprecate Kernel#jj
• Remove outdated JSON.iconv.
• Remove Class#json_creatable? monkey patch.
• Remove deprecated JSON.restore method.
• Remove deprecated JSON.unparse method.
• Remove deprecated JSON.fast_unparse method.
• Remove deprecated JSON.pretty_unparse method.
• Remove deprecated JSON::UnparserError constant.
• Remove outdated JSON::MissingUnicodeSupport constant.

Full Changelog: v2.10.2...v2.11.0

v2.10.2

What's Changed

• Fix a potential crash in the C extension parser.
• Raise a ParserError on all incomplete unicode escape sequence. This was the behavior until 2.10.0 unadvertently changed it.
• Ensure document snippets that are included in parser errors don't include truncated multibyte characters.
• Ensure parser error snippets are valid UTF-8.
• Fix JSON::GeneratorError#detailed_message on Ruby < 3.2

Full Changelog: v2.10.1...v2.10.2

v2.10.1

What's Changed

• Fix a compatibility issue with MultiJson.dump(obj, pretty: true) by @byroot in #749

Full Changelog: v2.10.0...v2.10.1

v2.10.0

What's Changed

• strict: true now accept symbols as values. Previously they'd only be accepted as hash keys.
• The C extension Parser has been entirely reimplemented from scratch.
• Introduced JSON::Coder as a new API allowing to customize how non native types are serialized in a non-global way.
• Introduced JSON::Fragment to allow assembling cached fragments in a safe way.
• The Java implementation of the generator received many optimizations.

Full Changelog: v2.9.1...v2.10.0

v2.9.1

What's Changed

• Add support for Solaris 10 which lacks strnlen()

v2.9.0

What's Changed

• Fix C implementation of script_safe escaping to not confuse some other 3 wide characters with \u2028 and \u2029.
  e.g. JSON.generate(["倩", "瀨"], script_safe: true) would generate the wrong JSON.
• JSON.dump(object, some_io) now write into the IO in chunks while previously it would buffer the entire JSON before writing.
• JSON::GeneratorError now has a #invalid_object attribute, making it easier to understand why an object tree cannot be serialized.
• Numerous improvements to the JRuby extension.

Full Changelog: v2.8.2...v2.9.0