[new release] melange and mel (0.3.0) #22459
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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`
([melange-re/melange#384](melange-re/melange#384))
- [mel]: Fix `mel build --watch` exiting after the first change
([melange-re/melange#401](melange-re/melange#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 `$PATH` ([melange-re/melange#409](melange-re/melange#409))
- [melange]: Remove dependency on `napkin` (the ReScript syntax parser). Users
that depend on libraries written in ReScript syntax should install the `mel`
package and Melange / Dune will find the `rescript_syntax` binary in `$PATH`
([melange-re/melange#411](melange-re/melange#411))
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Toolchain to produce JS from Reason/OCaml
CHANGES:
.cmjand.jsfiles at the same time (thisis the previous behavior -- using
--bs-package-output MODULE_SYSTEM:REL_PATH:JS_EXTENSION).cmjfiles with--bs-stop-after-cmj --bs-package-output REL_PATH_ONLY, and allows emitting JavaScript filesseparately, with
--bs-module-type MODULE_SYSTEM -o TARGET_FILE.JS_EXTENSION(melange-re/melange#384)
mel build --watchexiting after the first change(melange-re/melange#401)
reason. Reason syntax users should installreasonfrom their preferred package manager instead, and Melange / Dune willfind it in
$PATH(melange-re/melange#409)napkin(the ReScript syntax parser). Usersthat depend on libraries written in ReScript syntax should install the
melpackage and Melange / Dune will find the
rescript_syntaxbinary in$PATH(melange-re/melange#411)