Issues

Issues

• Each use of a value with a large inferred object or polymorphic variant type copies the whole type into the typed tree

  rescript-lang/rescript#9265 · opened on Nov 7, 2026

• Superlinear compile time for type alias chains, refs in loops, large objects, let rec groups and switches

  rescript-lang/rescript#9256 · opened on Nov 7, 2026

• @module on an @instanceOf type is silently ignored

  Bug

  rescript-lang/rescript#9239 · opened on Nov 5, 2026

• Stdlib soundness of option returning functions

  rescript-lang/rescript#9233 · opened on Nov 5, 2026
  2

• A dynamic import module M = await List fails with Unbound module type __List__ after a statement, in a callback and in other positions

  rescript-lang/rescript#9230 · opened on Nov 4, 2026

• await is rejected in a @this async function, which compiles to an async function

  rescript-lang/rescript#9229 · opened on Nov 4, 2026

• let x = e; f(x) evaluates e after the callee f

  rescript-lang/rescript#9228 · opened on Nov 4, 2026

• A local ref's value stored in a tuple or passed to a local function changes when the ref is assigned later

  rescript-lang/rescript#9227 · opened on Nov 4, 2026

• Inlining binds an argument before a read of an immutable record field

  rescript-lang/rescript#9223 · opened on Nov 4, 2026

• Dict.has evaluates the key before the dict, and a comma expression operand changes what it tests

  rescript-lang/rescript#9222 · opened on Nov 4, 2026
  1

• A polymorphic variant argument of an external is evaluated twice, or inside a generated function

  rescript-lang/rescript#9215 · opened on Nov 4, 2026

• Completion inside a list literal ignores the element type

  Bug

  rescript-lang/rescript#9212 · opened on Nov 4, 2026

• @directive is dropped on @this functions

  Bug

  rescript-lang/rescript#9197 · opened on Nov 3, 2026

• Issues from differential semantic drift analysis (b123b7c3 to c10223e8)

  rescript-lang/rescript#9186 · opened on Nov 3, 2026

• Diagnostics: inline-record mutability coercion gives no reason, and throw in finally warns about unreachable code

  Bug

  rescript-lang/rescript#9185 · opened on Nov 3, 2026

• Exception analysis does not know the Temporal fromStringOrThrow functions

  Bug

  rescript-lang/rescript#9182 · opened on Nov 3, 2026

• Create interface: doc comments are reindented, and @deprecated and doc comments on values are dropped

  Bug

  rescript-lang/rescript#9181 · opened on Nov 3, 2026

• Inlining evaluates arguments in the order the function body uses them, not left to right

  rescript-lang/rescript#9175 · opened on Nov 3, 2026

• Port selected upstream OCaml type checker improvements (post 4.06)

  rescript-lang/rescript#9130 · opened on Oct 29, 2026
  1

• Parser: an attribute or doc comment in front of a {... spread type changes how it is read

  Bug

  rescript-lang/rescript#9122 · opened on Oct 28, 2026

• Dev dependencies interacting

  rescript-lang/rescript#9089 · opened on Oct 27, 2026
  1

• Review of OCaml-derived language features

  rescript-lang/rescript#9074 · opened on Oct 27, 2026

• No completion for extensible variant constructors

  Bug

  rescript-lang/rescript#9073 · opened on Oct 27, 2026

• Hover and completion on an applied functor show the functor body's types

  Bug

  rescript-lang/rescript#9072 · opened on Oct 27, 2026

• Hover on a functor drops its parameter

  Bug

  rescript-lang/rescript#9071 · opened on Oct 27, 2026