Add serverArgs (#73)

src/client.ts

@@ -9,7 +9,7 @@ import { IHierarchicalOutputChannel } from './utils'
  * The client launches its own server in a child process and cleans up after itself.
  */
 export function makeClient(output: IHierarchicalOutputChannel, config: LanguageConfig): vscode.Disposable {
-  const { languageId, serverCommand } = config
+  const { languageId, serverCommand, serverArgs } = config
   if (!languageId || !serverCommand) return vscode.Disposable.from()
 
   const serverExecutable = {
@@ -18,7 +18,7 @@ export function makeClient(output: IHierarchicalOutputChannel, config: LanguageC
       cwd: vscode.workspace.workspaceFolders?.[0].uri.fsPath,
       env: process.env
     },
-    args: [],
+    args: serverArgs || [],
     transport: lsp.TransportKind.stdio
   }
 

src/config.ts

@@ -53,6 +53,11 @@ export type LanguageConfig = {
    */
   serverCommand?: string
 
+  /**
+   * A list of arguments passed to the `serverCommand`.
+   */
+  serverArgs?: string[],
+
   /**
    * A formatter shell command.
    * STDIN will be equal to the contents of the current text document,
@@ -265,6 +270,7 @@ export namespace Config {
 
         lang.languageId = lang.languageId.trim()
         lang.serverCommand = lang.serverCommand?.trim()
+        lang.serverArgs = lang.serverArgs?.map(arg => arg.trim())
         lang.formatCommand = lang.formatCommand?.trim()
         lang.onSaveCommand = lang.onSaveCommand?.trim()
         lang.apiSearchUrl = lang.apiSearchUrl?.trim()
@@ -310,6 +316,7 @@ export namespace Config {
     return {
       languageId: mask.languageId,
       serverCommand: mask.serverCommand || base.serverCommand,
+      serverArgs: mask.serverArgs || base.serverArgs,
       formatCommand: mask.formatCommand || base.formatCommand,
       apiSearchUrl: mask.apiSearchUrl || base.apiSearchUrl,
       tags: arrayMerge(mask.tags || [], base.tags || [], tag => tag.file, tagMerge),