Use local tmp directory (#3821)

tools/make-nodejs.sh

@@ -6,10 +6,12 @@ set -e
 
 DES=dist/build/uBlock0.nodejs
 
+TMPDIR=tmp
+mkdir -p $TMPDIR
+
 # Save existing npm dependencies if present so that we do not have to fetch
 # them all again
 if [ -d "$DES/node_modules" ]; then
-    TMPDIR=`mktemp -d`
     mv "$DES/node_modules" "$TMPDIR/node_modules"
 fi
 
@@ -81,7 +83,6 @@ cd -
 # Restore saved npm dependencies
 if [ -d "$TMPDIR/node_modules" ]; then
     mv "$TMPDIR/node_modules" "$DES/node_modules"
-    rmdir "$TMPDIR"
 fi
 
 echo "*** uBlock0.nodejs: Package done."