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| Original file line number | Diff line number | Diff line change |
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| <!-- | ||
| ### Internal | ||
| ### Changed | ||
| ### Added | ||
| ### Removed | ||
| ### Deprecated | ||
| ### Performance | ||
| ### Fixed | ||
| ### Documentation | ||
| --> | ||
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| ## Highlights | ||
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| ### `Hash` is now bridged to JavaScript `Map` | ||
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| This change brings a lot of benefits, but also some incompatibilities. The main benefit is that `Hash` now is both more performant and relies on native JavaScript capabilities. | ||
| This improves interoperability with JavaScript. As a downside, applications reaching for internal `Hash` data structures will need to be updated. | ||
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| Interacting with `Hash` from `JavaScript` is easier than ever: | ||
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| ```ruby | ||
| hash = `new Map([['a', 1], ['b', 2]])` | ||
| hash # => {a: 1, b: 2} | ||
| `console.log(hash)` # => Map(2) {"a" => 1, "b" => 2} | ||
| `hash.get('a')` # => 1 | ||
| `hash.set('c', 3)` | ||
| hash # => {a: 1, b: 2, c: 3} | ||
| hash.keys # => ["a", "b", "c"] | ||
| hash.values # => [1, 2, 3] | ||
| ``` | ||
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| ### Performance improvements | ||
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| This release brings a lot of performance improvements, our tests on Asciidoctor show a 25% improvement in performance, but we've seen up to 66% performance improvement on some applications. | ||
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| ## Changelog | ||
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| ### Deprecated | ||
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| - Deprecate using x-string to access JavaScript without an explicit magic-comment (#2543) | ||
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| ### Compatibility | ||
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| - Add a magic-comment that will disable x-string compilation to JavaScript (#2543) | ||
| - Pass value in `PromiseV2#always` just like `PromiseV1#always` does it (#2579) | ||
| - `#hash` now returns integers (#2582) | ||
| - Improve `Range#include?`/`member?`/`cover?`/`===` (#2598) | ||
| - Make `Module#define_method` more compatible with CRuby (#2593) | ||
| - `Hash#clone` must freeze clone if original is frozen, but `Hash#dup` must not (#2603) | ||
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| ### Fixed | ||
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| - Fix `Kernel#Float` with `exception:` option (#2532) | ||
| - Fix `Kernel#Integer` with `exception:` option (#2531) | ||
| - Fix `String#split` with limit and capturing regexp (#2544) | ||
| - Fix `switch` with Object-wrapped values (#2542) | ||
| - Fix non-direct subclasses of bridged classes not calling the original constructor (#2546) | ||
| - Regexp.escape: Cast to String or drop exception (#2552) | ||
| - Propagate removal of method from included/prepended modules (#2553) | ||
| - Restore `nodejs/yaml` functionality (#2551) | ||
| - Fix sine `Range#size` edge cases (#2541) | ||
| - Use a Map instead of a POJO for the jsid_cache (#2584) | ||
| - Fix `String#object_id`, `String#__id__`, `String#hash` to match CRuby's behavior (#2576) | ||
| - Lowercase response headers in `SimpleServer` for rack 3.0 compatibility (#2578) | ||
| - Fix `Module#clone` and `Module#dup` to properly copy methods (#2572) | ||
| - Chrome runner fix: support code that contains `</script>` (#2581) | ||
| - Do not skip `$truthy` when left hand side of a comparison is `self` (#2596) | ||
| - Unexpected `return`/`break` should raise `LocalJumpError` (#2591) | ||
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| ### Added | ||
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| - SourceMap support for `Kernel#eval` (#2534) | ||
| - Add `CGI::Util#escapeURIComponent` and `CGI::Util#unescapeURIComponent` (#2566) | ||
| - `CGI::Util` implement additional methods (#2601) | ||
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| ### Changed | ||
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| - Change compilation of Regexp nodes that may contain advanced features, so if invalid that they would raise at runtime, not parse-time (#2548) | ||
| - `Hash` is now bridged to JavaScript `Map` and support for non-symbol keys in keyword arguments (#2568) | ||
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| ### Documentation | ||
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| - Bridging documentation (#2541) | ||
| - Fix Typo in Running tests Section of README.md File (#2580) | ||
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| ### Performance | ||
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| - Improve performance of `Array#intersect?` and `#intersection` (#2533) | ||
| - `Proc#call`: Refactor for performance (#2541) | ||
| - Opal.stub_for: optimize (#2541) | ||
| - Hash: Optimize `#to_a` (#2541) | ||
| - Array: Optimize `#collect`/`#map` (#2541) | ||
| - Optimize argument slicing in runtime for performance (#2555) | ||
| - Closure: Generate a JavaScript object, not an Error, gain up to 15% on Asciidoctor (#2556) | ||
| - Optimize `String#split` and `String#start_with` (#2560) | ||
| - Compute `$@` dynamically (#2592) | ||
| - Optimize the `$prop` helper (#2597) | ||
| - Improve `Array.push()` performance when pushing many items (#2565) | ||
| - Optimize `Opal.instance_methods` (#2600) | ||
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| ### Internal | ||
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| - Update rubocop (#2535) | ||
| - Match3Node Cleanup (#2541) | ||
| - IFlipFlop/EFlipFlop: Refactor for readability (#2541) | ||
| - ForRewriter: Refactor for readability (#2541) |
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