l10n missing from .vsix

1. The `l10n` folder, which contains all the translations, was not
   present anywhere in the built .vsix. The translations are required in
   order to run yaml-language-server, so I copied from
   yaml-language-server to `dist/l10n`.
2. The location of l10n was listed as `../yaml-language-server/l10n`.
   This doesn't work if yaml-language-server isn't cloned locally,
   and doesn't work when running as a .vsix, so I changed it to
   `./dist/l10n`.
3. During the CI run, npm isn't installing the latest prerelease of
   yaml-language-server. I added a step to force it to use the latest
   yaml-language-server. This is important, because the above bugs
   could have been caught earlier if we were actually testing against
   the newest yaml-language-server.

Fixes #1152

Signed-off-by: David Thompson <davthomp@redhat.com>

Author: datho7561

.github/workflows/CI.yaml

@@ -35,6 +35,10 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      # Install latest yaml-language-server
+      - name: Update yaml-language-server
+        run: npm i yaml-language-server@next
+
       # Build extension
       - name: Run build
         run: npm run build

package-lock.json

@@ -256,9 +256,10 @@
     "lint": "eslint -c .eslintrc.js --ext .ts src test",
     "test": "npm run test-compile && sh scripts/e2e.sh",
     "ui-test": "npm run test-compile && extest setup-and-run out/test/ui-test/allTestsSuite.js -c 1.76.2",
-    "vscode:prepublish": "webpack --mode production",
+    "vscode:prepublish": "webpack --mode production && npm run copy-l10n",
+    "copy-l10n": "cp -r node_modules/yaml-language-server/l10n dist/l10n",
     "watch": "webpack --mode development --watch --info-verbosity verbose",
-    "test-compile": "npm run clean && tsc -p ./ && webpack --mode development",
+    "test-compile": "npm run clean && tsc -p ./ && webpack --mode development && npm run copy-l10n",
     "run-in-chromium": "npm run compile && vscode-test-web --browserType=chromium --extensionDevelopmentPath=. ."
   },
   "devDependencies": {

package.json

@@ -113,7 +113,7 @@ export function startClient(
 ): SchemaExtensionAPI {
   const telemetryErrorHandler = new TelemetryErrorHandler(runtime.telemetry, lsName, 4);
   const outputChannel = window.createOutputChannel(lsName);
-  const l10nPath = context.asAbsolutePath('../yaml-language-server/l10n');
+  const l10nPath = context.asAbsolutePath('./dist/l10n');
   // Options to control the language client
   const clientOptions: LanguageClientOptions = {
     // Register the server for on disk and newly created YAML documents