pre-push: do not pretend that we're a Typescript project

It shows that I copy-edited this from the `setup-git-for-windows-sdk`
project, which _is_ implemented in Typescript ;-)

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

pre-push.hook

@@ -33,7 +33,7 @@ git diff --quiet dist/ ||
 die '`dist/` is dirty'
 
 base="$(git rev-list HEAD -1 -- dist/)"
-if test 0 -lt $(git rev-list --count ${base+$base..}HEAD -- \*.ts)
+if test 0 -lt $(git rev-list --count ${base+$base..}HEAD -- \*.js)
 then
     echo "Verifying that dist/ is up to date" >&2
     npm run prepare &&