+CLOSURE_COMPILER=node_modules/closure-compiler/lib/vendor/compiler.jar
+BASE_JS=node_modules/obvious-closure-library/closure/goog/base.js
+if [[ (! -f $CLOSURE_COMPILER) || (! -f $BASE_JS) ]]; then
+ echo "Missing compiler.jar or base.js. Try running 'npm install'." 1>&2
+ exit 1
+fi