🎉 Migrate to use yarn.

frontend/scripts/build-and-run-tests.sh

@@ -3,6 +3,6 @@ source ~/.bashrc
 
 set -ex;
 
-npm ci
+yarn install
 clojure -Adev tools.clj build:tests
 node ./target/tests/main

frontend/scripts/build-app.sh

@@ -5,7 +5,7 @@ set -ex
 
 TAG=`git log -n 1 --pretty=format:%H -- ./`
 
-npm ci
+yarn install
 
 export NODE_ENV=production;