Rewrite hook to javascript

Author: tarmolov

.githooks/pre-commit/test

@@ -1,28 +1,9 @@
-#!/bin/bash
-#
-# * Check changed js files using jshint and jscs.
-# * Runs tests.
-#
+#!/usr/bin/env node
 
-PATCH_FILE="working-tree.patch"
-NPM_BIN="./node_modules/.bin"
+var spawn = require('child_process').spawn;
+var exec = require('child_process').execSync;
+var gitCachedFiles = exec('git diff --cached --name-only --diff-filter=ACMR').toString().trim();
 
-function cleanup {
-    exit_code=$?
-    if [ -f "$PATCH_FILE" ]; then
-        git apply "$PATCH_FILE" 2> /dev/null
-        rm "$PATCH_FILE"
-    fi
-    exit $exit_code
+if (gitCachedFiles) {
+    spawn('npm', ['test'], {stdio: 'inherit'}).on('close', process.exit.bind(process));
 }
-
-trap cleanup EXIT SIGINT SIGHUP
-
-# Cancel any changes to the working tree that are not going to be committed
-git diff > "$PATCH_FILE"
-git checkout -- .
-
-git_cached_files=$(git diff --cached --name-only --diff-filter=ACMR | grep "\.js$")
-if [ "$git_cached_files" ]; then
-    npm test --silent || exit 1
-fi