[test] Visual Studio Code extension build.

#64

.github/workflows/test.yml

@@ -81,3 +81,11 @@ jobs:
       - run: make -j4 test-error FUT_HOST=java
       - run: rm test/bin/*/error.txt
       - run: make -j4 test-error FUT_HOST=node
+  vscode:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/setup-node@main
+      - uses: actions/checkout@main
+      - run: make FUT_HOST=node
+      - run: make -C editors/vscode src/fucheck.js FUT_HOST=node
+      - run: cd editors/vscode && npm i && npx @vscode/vsce package

.travis.yml

@@ -61,3 +61,10 @@ jobs:
       - make -j5 test-error FUT_HOST=cs
       - rm test/bin/*/error.txt
       - make -j5 test-error FUT_HOST=node
+  - name: vscode
+    install:
+      - nvm install --lts
+    script:
+      - make FUT_HOST=node
+      - make -C editors/vscode src/fucheck.js FUT_HOST=node
+      - cd editors/vscode && npm i && npx @vscode/vsce package

editors/vscode/Makefile

@@ -7,7 +7,11 @@ fusion-$(VERSION).vsix: package.json fu-logo.png fu-file.svg language-configurat
 	vsce package
 
 src/fucheck.js: ../../Lexer.fu ../../AST.fu ../../Parser.fu ../../Sema.fu ../../SymbolReferenceVisitor.fu
+ifeq ($(FUT_HOST),node)
+	node ../../fut.js -o $@ $^
+else
 	fut -o $@ $^
+endif
 
 node_modules: package.json
 	npm i --no-package-lock