Sourced from rescript's releases.

12.0.0-alpha.13

:boom: Breaking Change

• Rename JsError to JsExn and error modules cleanup. rescript-lang/rescript#7408
• Make BigInt.fromFloat return an option rather than throwing an error in case it's passed a value with a decimal value. rescript-lang/rescript#7419

:rocket: New Feature

• Add shift (<<, >>, >>>) operators for int and bigint. rescript-lang/rescript#7183
• Add bitwise AND (&) operator for int and bigint. rescript-lang/rescript#7415
• Add bitwise NOT (~) operator for int and bigint. rescript-lang/rescript#7418
• Significantly reduced the download size by splitting binaries into optional platform-specific dependencies (e.g, @rescript/linux-x64). rescript-lang/rescript#7395
• JSX: do not error on ref as prop anymore (which is allowed in React 19). rescript-lang/rescript#7420
• Add new attribute @notUndefined for abstract types to prevent unnecessary wrapping with Primitive_option.some in JS output. rescript-lang/rescript#7458
• Preserve JSX: enable by adding "-bs-jsx-preserve" to "bsc-flags" (does require "jsx": { "version": 4 }). rescript-lang/rescript#7387
• Add slot prop to JsxDOM.domProps. rescript-lang/rescript#7487

:bug: Bug fix

• Fix broken bstracing CLI location. rescript-lang/rescript#7398
• Fix field flattening optimization to avoid creating unnecessary copies of allocating constants. rescript-lang/rescript-compiler#7421
• Fix leading comments removed when braces inside JSX contains let assignment. rescript-lang/rescript#7424
• Fix JSON escaping in code editor analysis: JSON was not always escaped properly, which prevented code actions from being available in certain situations. rescript-lang/rescript#7435
• Fix regression in pattern matching for optional fields containing variants. rescript-lang/rescript#7440
• Fix missing checks for duplicate literals in variants with payloads. rescript-lang/rescript#7441
• Fix printer removing private for empty record. rescript-lang/rescript#7448
• Fix: handle dynamic imports with module aliases. rescript-lang/rescript#7452
• Fix missing unescaping when accessing prop with exotic name. rescript-lang/rescript#7469
• Fix syntax error with mutable nested record. rescript-lang/rescript#7470

:house: Internal

• AST: Add bar location to case. rescript-lang/rescript#7407
• Clean up lazy from ASTs and back-end. rescript-lang/rescript#7474
• Compile runtime with rewatch and add rewatch tests to the compiler repo. rescript-lang/rescript#7422

:nail_care: Polish

• In type errors, recommend stdlib over Belt functions for converting between float/int/string. rescript-lang/rescript#7453
• Remove unused type Jsx.ref. rescript-lang/rescript#7459
• Add @notUndefined attribute to all relevant abstract types in Stdlib. rescript-lang/rescript#7464
• Editor: Add pipe completions from current module. rescript-lang/rescript#7471

Sourced from rescript's changelog.

12.0.0-alpha.13

:boom: Breaking Change

• Rename JsError to JsExn and error modules cleanup. rescript-lang/rescript#7408
• Make BigInt.fromFloat return an option rather than throwing an error in case it's passed a value with a decimal value. rescript-lang/rescript#7419

:rocket: New Feature

• Add shift (<<, >>, >>>) operators for int and bigint. rescript-lang/rescript#7183
• Add bitwise AND (&) operator for int and bigint. rescript-lang/rescript#7415
• Add bitwise NOT (~) operator for int and bigint. rescript-lang/rescript#7418
• Significantly reduced the download size by splitting binaries into optional platform-specific dependencies (e.g, @rescript/linux-x64). rescript-lang/rescript#7395
• JSX: do not error on ref as prop anymore (which is allowed in React 19). rescript-lang/rescript#7420
• Add new attribute @notUndefined for abstract types to prevent unnecessary wrapping with Primitive_option.some in JS output. rescript-lang/rescript#7458
• Preserve JSX: enable by adding "-bs-jsx-preserve" to "bsc-flags" (does require "jsx": { "version": 4 }). rescript-lang/rescript#7387
• Add slot prop to JsxDOM.domProps. rescript-lang/rescript#7487

:bug: Bug fix

• Fix broken bstracing CLI location. rescript-lang/rescript#7398
• Fix field flattening optimization to avoid creating unnecessary copies of allocating constants. rescript-lang/rescript-compiler#7421
• Fix leading comments removed when braces inside JSX contains let assignment. rescript-lang/rescript#7424
• Fix JSON escaping in code editor analysis: JSON was not always escaped properly, which prevented code actions from being available in certain situations. rescript-lang/rescript#7435
• Fix regression in pattern matching for optional fields containing variants. rescript-lang/rescript#7440
• Fix missing checks for duplicate literals in variants with payloads. rescript-lang/rescript#7441
• Fix printer removing private for empty record. rescript-lang/rescript#7448
• Fix: handle dynamic imports with module aliases. rescript-lang/rescript#7452
• Fix missing unescaping when accessing prop with exotic name. rescript-lang/rescript#7469
• Fix syntax error with mutable nested record. rescript-lang/rescript#7470

:house: Internal

• AST: Add bar location to case. rescript-lang/rescript#7407
• Clean up lazy from ASTs and back-end. rescript-lang/rescript#7474
• Compile runtime with rewatch and add rewatch tests to the compiler repo. rescript-lang/rescript#7422

:nail_care: Polish

• In type errors, recommend stdlib over Belt functions for converting between float/int/string. rescript-lang/rescript#7453
• Remove unused type Jsx.ref. rescript-lang/rescript#7459
• Add @notUndefined attribute to all relevant abstract types in Stdlib. rescript-lang/rescript#7464
• Editor: Add pipe completions from current module. rescript-lang/rescript#7471

• e6f400b Use --tolerate-republish flag on publishing
• 58b96e1 Fix publishConfig.access of the @rescript/std package.
• 0e0dfe3 update rclone actions - point to main
• a7bf15c May need --s3-no-check-bucket option for R2 sync.
• 266bf27 update rclone actions
• d4b8a6c fix rclone remote endpoint
• 902702c update rclone actions (#7491)
• 1e90c1f Prepare for 12.0.0-alpha.13 release (#7490)
• 32cedc0 Add slot prop to JsxDOM.domProps (#7487)
• 4836f3c Disable OPAM cache for now (#7489)
• Additional commits viewable in compare view

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