12.0.0-alpha.14

💥 Breaking Change

• Iterator.forEach now emits Iterator.prototype.forEach call. #7506
• Rename functions ending with Exn to end with OrThrow. The old Exn functions are now deprecated:
  • Bool.fromStringExn → Bool.fromStringOrThrow
  • BigInt.fromStringExn → BigInt.fromStringOrThrow
  • JSON.parseExn → JSON.parseOrThrow
  • Changed BigInt.fromFloat to return an option rather than throwing an error.
  • Added BigInt.fromFloatOrThrow
  • Option.getExn → Option.getOrThrow
  • Null.getExn → Null.getOrThrow
  • Nullable.getExn → Nullable.getOrThrow
  • Result.getExn → Result.getOrThrow
  • List.getExn → List.getOrThrow
  • List.tailExn → List.tailOrThrow
  • List.headExn → List.headOrThrow
  • Old functions remain available but are marked as deprecated with guidance to use the new OrThrow variants.
  • #7518, #7554

🚀 New Feature

• Add RegExp.flags. #7461
• Add Array.findLast, Array.findLastWithIndex, Array.findLastIndex, Array.findLastIndexWithIndex and Array.findLastIndexOpt. #7503
• Add options argument to Console.dir. #7504
• Show variant constructor's inline record types on hover. #7519
• Add additional Iterator.prototype bindings to runtime/Stdlib_Iterator.res. #7506

🐛 Bug fix

• rescript-tools doc no longer includes shadowed bindings in its output. #7497
• Treat throw like raise in analysis. #7521
• Fix index out of bounds exception thrown in rare cases by rescript-editor-analysis.exe codeAction command. #7523
• Don't produce duplicate type definitions for recursive types on hover. #7524
• Prop punning when types don't match results in I/O error: _none_: No such file or directory. #7533
• Fix partial application with user-defined function types. #7548
• Fix doc comment before variant throwing syntax error. #7535
• Fix apparent non-determinism in generated code for pattern matching. #7557

💅 Polish

• Suggest awaiting promise before using it when types mismatch. #7498
• Complete from RegExp stdlib module for regexes. #7425
• Allow oneliner formatting when including module with single type alias. #7502
• Improve error messages for JSX type mismatches, passing objects where record is expected, passing array literal where tuple is expected, and more. #7500
• Show in error messages when coercion can be used to fix a type mismatch. #7505
• Remove deprecated pipe last (|>) syntax. #7512
• Improve error message for pipe (->) syntax. #7520
• Improve a few error messages around various subtyping issues. #7404
• In module declarations, accept the invalid syntax M = {...} and format it to M : {...}. #7527
• Improve doc comment formatting to match the style of multiline comments. #7529
• Improve error messages around type mismatches for try/catch, if, for, while, and optional record fields + optional function arguments. #7522
• Sync reanalyze with the new APIs around exception. #7536
• Improve array pattern spread error message. #7549
• Sync API docs with rescript-lang.org on release. #7555

🏠 Internal

• Refactor the ast for record expressions and patterns. #7528
• Editor: add completions from included modules. #7515
• Add -editor-mode arg to bsc for doing special optimizations only relevant to the editor tooling. #7541