diff --git a/makefile b/makefile
--- a/makefile
+++ b/makefile
@@ -106,16 +106,8 @@ pytest:
 pytest_watch:
 	pdm run ptw
 
-test_js_init:
-	npm install
-
 test_js:
-	pnpx coffee -c light9/web/*.coffee
-	pnpx mocha --compilers coffee:coffee-script/register --globals window,N3 light9/web/graph_test.coffee
-
-test_js_watch:
-	# have coffee continuously running
-	watch -c pnpx mocha --compilers coffee:coffee-script/register --globals window,N3 light9/web/graph_test.coffee --colors
+	pnpm exec vitest
 
 profile_seq:
 	echo in lib, get https://github.com/uber/pyflame.git and https://github.com/brendangregg/FlameGraph.git