1.0.0-alpha.1

CHANGES:

• melange: print an error message if $MELANGELIB is set to a directory that
  doesn't exist (#449)
• melange: fix bug where --bs-module-name didn't always affect generated JS
  file casing (#446)
• melange: fix bug where -o output.js didn't always write a JavaScript file
  (#454)
• melange: remove the -bs-read-cmi flag in favor of the builtin
  -intf-suffix flag, standard in OCaml
  (#458,
  #460)
• melange: return an actionable error message when no output is specified
  with -impl / -intf
  (#465,
  #466)
• melange: use Object.prototype.hasOwnProperty in the Caml_obj runtime
  (#469)
• melange: transform
  NonEscapeCharacter
  correctly in JS strings (those written using {js|string here|js})
  (#469)
• melange: define MELANGE conditional compilation variable
  (#472)
• melange: Make Pervasives exactly match the Stdlib behavior
  (#476)
• melange: fix unbound error when trying to use Printexc.exn_slot_id
  (#482)
• melange: fix codegen issue accessing a nested module path that is also
  included (#487)
• melange: preserve the correct command-line order for load path directories
  (#492)
• melange: respect the -nostdlib option; don't add stdlib / runtime to the
  load path in that case
  (#496)
• melange: build the Melange runtime / stdlib / runtime tests with the dune
  integration (#493). Thus
  melange now requires Dune 3.8.
• melange: allow shadowing sub-modules of Stdlib in user projects
  (#512)
• melange, reactjs-jsx-ppx: introduce a reactjs-jsx-ppx package, remove its
  dependency from melange
  (#517)
• melange: remove the --bs-jsx <version> flag from melc now that
  reactjs-jsx-ppx is a separate package
  (#525)
• melange: add melpp executable to preprocess #if conditionals with the
  melange parser (#539)
• mel: delete the mel package. The dune integration is now the only
  officially supported workflow for orchestrating melange builds
  (#546)
• melange: Extract melange.ppx from the melange package. This preprocessing
  step interprets extensions such as %bs.obj, %bs.raw, %bs.re, etc.
  (#534)
• melange: allow installing melange in more OCaml versions and compiler
  switches. Melange now migrates binary AST to the version it understands
  (#548)
• melange: don't run anonymous args function from
  [@@@bs.config {flags = [| ... |]}] attributes
  (#554)
• melange: add --preamble flag to add a preamble to emitted JS. An example is
  "use client"; in React Server Components, which needs to appear before
  imports (#545,
  #574)
• melange: turn off warning 20 (ignore-extra-argument) by default. This
  warning is rarely useful in Melange due to false positives when invoking
  functions defined with %bs.raw
  (#488,
  #576)

0.3.2

CHANGES:

• ppx_rescript_compat (ReScript compatibility layer): fix conversion for
  cases such as foo["bar"] = assignment
  (#441):
  • These are now correctly converted to the OCaml equivalent:
    foo##bar #= assignment
• [mel]: fix merlin generation, broken since mel was moved to its own package
  (#442)

0.3.1

CHANGES:

• Disable warning 69 (unused-field in record) for the private record
  generated by the bs.deriving attribute
  (#414)
• Disable warning 20 (ignored-extra-argument) when applying
  foo##fn arg1 arg2
  (#416):
  • in cases such as external x : < .. > Js.t = "", the typechecker doesn't
    know the arity of the function, even though Melange will emit an uncurried
    function call.
• Disable warning 61 (unboxable-type-in-prim-decl) in external declarations
  (#415):
  • Melange externals are substantially different from OCaml externals. This
    warning doesn't make sense in a JS runtime.
• melc: introduce --bs-module-name flag to specify the original file name for
  the current compilation unit
  (#413)
  • Dune's namespacing implementation generates modules such as
    lib__Original_name. Passing --bs-module-name original_name allows
    melange to issue correct import / require statements to the unmangled
    JS file names.

0.3.0

CHANGES:

• [melange] Introduce 2 explicit modes of JavaScript compilation:
  • "Batch compilation": produces .cmj and .js files at the same time (this
    is the previous behavior -- using --bs-package-output MODULE_SYSTEM:REL_PATH:JS_EXTENSION)
  • "Separate emission": produces only .cmj files with --bs-stop-after-cmj --bs-package-output REL_PATH_ONLY, and allows emitting JavaScript files
    separately, with --bs-module-type MODULE_SYSTEM -o TARGET_FILE.JS_EXTENSION
    (#384)
• [mel]: Fix mel build --watch exiting after the first change
  (#401)
• [melange]: Remove dependency on reason. Reason syntax users should install reason from their preferred package manager instead, and Melange / Dune will
  find it in $PATH (#409)
• [melange]: Remove dependency on napkin (the ReScript syntax parser). Users
  that depend on libraries written in ReScript syntax should install the mel
  package and Melange / Dune will find the rescript_syntax binary in $PATH
  (#411)

0.2.0

CHANGES:

• Initial release supporting OCaml 4.14.