Monorepo support (e.g. yarn workspaces)

.gitignore

@@ -26,7 +26,7 @@
 
 .bsb.lock
 lib/bs
-/node_modules
+node_modules
 test/**/*.js
 doc/tags
 
@@ -37,3 +37,8 @@ doc/tags
 !rescript-vscode/extension/server/win32/rescript-editor-support.exe
 
 rescript-vscode/extension/server/node_modules/.bin/
+
+examples/**/node_modules
+examples/**/lib
+examples/**/src/*.js
+examples/**/.merlin

CHANGELOG.md

@@ -2,7 +2,18 @@
 
 ## master
 
+** Improvements: **
+
+- Upgrade to `rescript-vscode@1.4.0` (see changes [here](https://github.com/rescript-lang/rescript-vscode/blob/1.0.4/HISTORY.md#104))
+- Add proper monorepo support (`e.g. yarn workspaces`)
+  - Detects `bsb` / `bsc` correctly for each buffer separately.
+  - Heuristic for detecting the binaries: For the current file, find the nearest `node_modules/bs-platform` folder for the binaries
+  - Adds an `augroup RescriptAutoProjectEnv` that sets the environment on every `.res` / `.resi` related read / write / new file event
+  - Will also update the environment on each `format` and `build` call to make it sync up for all non-rescript buffers
+  - On each env update, it updates the local working directory to the updated project root path as well
 - Fixes issue with long template strings breaking the syntax highlighting
+- Fixes an issue where `:RescriptBuild` would fail in non-rescript buffers due to a wrongly scoped script variable (was buffer only)
+- Add new commands `:RescriptBuildWorld` and `:RescriptCleanWorld` for cleaning / building all sources + dependencies
 
 ## 1.1.0
 

README.md

@@ -15,6 +15,7 @@
 - Filetype detection for `.res`, `.resi`
 - Basic automatic indentation
 - Includes LSP for coc-vim usage
+- Proper tooling detection for monorepo like setups (yarn workspaces)
 
 **Provided by vim-rescript commands:**
 - Formatting `.res` files w/ syntax error diagnostics in VIM quickfix
@@ -24,6 +25,12 @@
 - Building the current projec w/ build diagnostics in VIM quickfix
 - Autocompletion w/ Vim's omnicomplete
 
+**Monorepo support:**
+
+The vim-rescript plugin automatically updates its project environment on each file open separately.
+- Tested for yarn workspaces (see [./examples/monorepo-yarn-workspaces])
+- **Note for non-LSP usage:** Always make sure to switch to a `.res` file **within the project you want to compile** before running `:RescriptBuild` etc.
+
 See `:h rescript` for the detailed [helpfile](./doc/rescript.txt).
 
 ## Requirements

autoload/rescript.vim

@@ -21,18 +21,12 @@ function! s:ShowInPreview(fname, fileType, lines)
     endif
 endfunction
 
-" Inits the plugin variables, e.g. finding all the necessary binaries
-function! rescript#Init()
-  if has('macunix')
-    let b:rescript_arch = "darwin"
-  elseif has('win32')
-    let b:rescript_arch = "win32"
-  elseif has('unix')
-    let b:rescript_arch = "linux"
-  endif
-
+" Configures the project related globals based on the current buffer location
+" This is needed for supporting monorepos with multiple projects / multiple
+" bs-platform setups
+function! rescript#UpdateProjectEnv()
   " Looks for the nearest node_modules directory
-  let l:res_bin_dir = finddir('node_modules', ".;") . "/bs-platform/" . b:rescript_arch
+  let l:res_bin_dir = finddir('node_modules/bs-platform/', ".;") . s:rescript_arch
 
   "if !exists("g:rescript_compile_exe")
   let g:rescript_compile_exe = l:res_bin_dir . "/bsc.exe"
@@ -42,24 +36,41 @@ function! rescript#Init()
   let g:rescript_build_exe = l:res_bin_dir . "/bsb.exe"
   "endif
 
-  " Needed for state tracking of the formatting error state
-  let s:got_format_err = 0
-  let s:got_build_err = 0
-
-  if !exists("g:rescript_editor_support_exe")
-    let g:rescript_editor_support_exe = s:rescript_plugin_dir . "/rescript-vscode/extension/server/" . b:rescript_arch . "/rescript-editor-support.exe"
-  endif
-
-  " Not sure why, but adding a ".;" doesn't find bsconfig when
-  " the editor was started without a specific file within the project
-  let g:rescript_project_config = findfile("bsconfig.json")
+  " Note that this doesn't find bsconfig when the editor was started without a
+  " specific file within the project
+  let g:rescript_project_config = findfile("bsconfig.json", ".;")
 
   " Try to find the nearest .git folder instead
   if g:rescript_project_config == ""
     let g:rescript_project_root = finddir(".git/..", expand('%:p:h').';')
   else
     let g:rescript_project_root = fnamemodify(g:rescript_project_config, ":p:h")
   endif
+
+  " Make sure that our local working directory is in the rescript_project_root
+  exe "lcd " . g:rescript_project_root
+endfunction
+
+" Inits the plugin variables, e.g. finding all the plugin related binaries
+" and initialising some internal state for UI (error window etc.)
+function! rescript#Init()
+  if has('macunix')
+    let s:rescript_arch = "darwin"
+  elseif has('win32')
+    let s:rescript_arch = "win32"
+  elseif has('unix')
+    let s:rescript_arch = "linux"
+  endif
+
+  " Needed for state tracking of the formatting error state
+  let s:got_format_err = 0
+  let s:got_build_err = 0
+
+  if !exists("g:rescript_editor_support_exe")
+    let g:rescript_editor_support_exe = s:rescript_plugin_dir . "/rescript-vscode/extension/server/" . s:rescript_arch . "/rescript-editor-support.exe"
+  endif
+
+  call rescript#UpdateProjectEnv()
 endfunction
 
 function! s:DeleteLines(start, end) abort
@@ -79,6 +90,7 @@ function! rescript#GetRescriptVscodeVersion()
 endfunction
 
 function! rescript#DetectVersion()
+  call rescript#UpdateProjectEnv()
   let l:command = g:rescript_compile_exe . " -version"
 
   silent let l:output = system(l:command)
@@ -96,6 +108,8 @@ function! rescript#DetectVersion()
 endfunction
 
 function! rescript#Format()
+  call rescript#UpdateProjectEnv()
+
   let l:ext = expand("%:e")
 
   if matchstr(l:ext, 'resi\?') == ""
@@ -376,8 +390,15 @@ function! rescript#Complete(findstart, base)
   return l:ret
 endfunction
 
-function! rescript#BuildProject()
-  let out = system(g:rescript_build_exe)
+function! rescript#BuildProject(...)
+  call rescript#UpdateProjectEnv()
+
+  let l:cmd = g:rescript_build_exe
+  if a:0 ==? 1
+    let l:cmd = g:rescript_build_exe . " " . a:1
+  endif
+
+  let out = system(l:cmd)
 
   " We don't rely too heavily on exit codes. If there's a compiler.log,
   " then there is either an error or a warning, so we rely on the existence

doc/rescript.txt

@@ -118,7 +118,16 @@ COMMANDS                                                    *rescript-commands*
     after writing your new .res file, otherwise the compiler will not compile.
 
 *:RescriptBuild*
-    Builds your current project with g:rescript_build_exe
+    Builds your current project with g:rescript_build_exe (without -make-world
+    flag)
+
+*:RescriptBuildWorld*
+    Builds your current project with g:rescript_build_exe (with -make-world).
+    This is useful for building your ReScript dependencies as well.
+
+*:RescriptCleanWorld*
+    Cleans all project files + all ReScript dependencies. This is useful for
+    fixing stale caches (e.g. when upgrading ReScript versions). 
 
 *:RescriptTypeHint*
     Uses the g:rescript_editor_support_exe executable to extract

examples/basic/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "basic",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "bs-platform": "8.4.2",
+    "reason-react": "0.9.1"
+  }
+}

examples/basic/src/Button.res

@@ -0,0 +1,6 @@
+@react.component
+let make = () => {
+  <div className="text-white bg-red">
+    {React.string("Click me")}
+  </div>
+}