Sourced from json's releases.

v2.8.2

What's Changed

• JSON.load_file: explictly load the file as UTF-8

Full Changelog: ruby/json@v2.8.1...v2.8.2

v2.8.1

• Fix the java version of the package to include the extension implementation. Only concerns JRuby.

Full Changelog: ruby/json@v2.8.0...v2.8.1

v2.8.0

What's Changed

• Emit a deprecation warning when JSON.load create custom types without the create_additions option being explictly enabled.
  • Prefer to use JSON.unsafe_load(string) or JSON.load(string, create_additions: true).
• Emit a deprecation warning when serializing valid UTF-8 strings encoded in ASCII_8BIT aka BINARY.
• Bump required Ruby version to 2.7.
• Add support for optionally parsing trailing commas, via allow_trailing_comma: true, which in cunjunction with the pre-existing support for comments, make it suitable to parse jsonc documents.
• Many performance improvements to JSON.parse and JSON.load, up to 1.7x faster on real world documents.
• Some minor performance improvements to JSON.dump and JSON.generate.

Parsing performance

Parsing performance is improved by 50-70% on realistic benchmarks, and even more on micro-benchmarks: https://gist.github.com/casperisfine/cf4b3a0594fae24b7d0eb93daaf3841a

== Parsing activitypub.json (58160 bytes)
ruby 3.4.0dev (2024-11-06T07:59:09Z precompute-hash-wh.. 7943f98a8a) +YJIT +PRISM [arm64-darwin24]
Warming up --------------------------------------
          json 2.7.2   638.000 i/100ms
                  oj   798.000 i/100ms
          Oj::Parser   948.000 i/100ms
           rapidjson   631.000 i/100ms
Calculating -------------------------------------
          json 2.7.2      6.423k (± 1.3%) i/s  (155.70 μs/i) -     32.538k in   5.067149s
                  oj      7.989k (± 1.0%) i/s  (125.17 μs/i) -     40.698k in   5.094544s
          Oj::Parser      9.472k (± 1.3%) i/s  (105.58 μs/i) -     47.400k in   5.005119s
           rapidjson      6.354k (± 1.1%) i/s  (157.37 μs/i) -     32.181k in   5.064962s
Comparison:
json 2.8.0:     9510.0 i/s
Oj::Parser:     9471.9 i/s - same-ish: difference falls within error
oj:     7989.4 i/s - 1.19x  slower
json 2.7.2:     6422.5 i/s - 1.48x  slower
rapidjson:     6354.5 i/s - 1.50x  slower
</tr></table>

... (truncated)

Sourced from json's changelog.

2024-11-14 (2.8.2)

• JSON.load_file explictly read the file as UTF-8.

2024-11-06 (2.8.1)

• Fix the java packages to include the extension.

2024-11-06 (2.8.0)

• Emit a deprecation warning when JSON.load create custom types without the create_additions option being explictly enabled.
  • Prefer to use JSON.unsafe_load(string) or JSON.load(string, create_additions: true).
• Emit a deprecation warning when serializing valid UTF-8 strings encoded in ASCII_8BIT aka BINARY.
• Bump required Ruby version to 2.7.
• Add support for optionally parsing trailing commas, via allow_trailing_comma: true, which in cunjunction with the pre-existing support for comments, make it suitable to parse jsonc documents.
• Many performance improvements to JSON.parse and JSON.load, up to 1.7x faster on real world documents.
• Some minor performance improvements to JSON.dump and JSON.generate.

2024-11-04 (2.7.6)

• Fix a regression in JSON.generate when dealing with Hash keys that are string subclasses, call to_json on them.

2024-10-25 (2.7.5)

• Fix a memory leak when #to_json methods raise an exception.
• Gracefully handle formatting configs being set to nil instead of "".
• Workaround another issue caused by conflicting versions of both json_pure and json being loaded.

2024-10-25 (2.7.4)

• Workaround a bug in 3.4.8 and older rubygems/rubygems#6490. This bug would cause some gems with native extension to fail during compilation.
• Workaround different versions of json and json_pure being loaded (not officially supported).
• Make json_pure Ractor compatible.

2024-10-24 (2.7.3)

• Numerous performance optimizations in JSON.generate and JSON.dump (up to 2 times faster).
• Limit the size of ParserError exception messages, only include up to 32 bytes of the unparseable source.
• Fix json-pure's Object#to_json to accept non state arguments
• Fix multiline comment support in json-pure.
• Fix JSON.parse to no longer mutate the argument encoding when passed an ASCII-8BIT string.
• Fix String#to_json to raise on invalid encoding in json-pure.
• Delete code that was based on CVTUTF.
• Use the pure-Ruby generator on TruffleRuby.
• Fix strict mode in json-pure to not break on Integer.

• d5e4a6e Release 2.8.2
• 72bea9d Merge pull request #706 from YuheiNakasaka/fix-redundant-to_str
• 61f022d Fix redundant to_str call
• d0dae8f Merge pull request #705 from casperisfine/key-cache-in-array-only
• 00c45dd Only use the key cache if the Hash is in an Array
• 3a09ad1 Merge pull request #704 from tompng/test_verbose_fix
• 6ae9155 Fix $VERBOSE restore
• 821b92e Merge pull request #703 from casperisfine/oj-parser-thread-safe
• 855563f Benchmark Oj::Parser in a thread safe way
• b1397e2 Merge pull request #702 from casperisfine/load-file-utf8
• Additional commits viewable in compare view

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