create util package

1 files changed, 16 insertions, 0 deletions

diff --git a/util/util.go b/util/util.go
new file mode 100644
index 0000000..0365331
--- /dev/null
+++ b/util/util.go
@@ -0,0 +1,16 @@
+package util
+
+import (
+	"fmt"
+	"os"
+)
+
+func Eprintf(format string, a ...any) {
+	Logf(format, a...)
+	os.Exit(1)
+}
+
+func Logf(format string, a ...any) {
+	msg := fmt.Sprintf(format, a...)
+	fmt.Fprintf(os.Stderr, "%s\n", msg)
+}