diff --git a/i7h.js b/i7h.js
new file mode 100644
index 0000000..f908e99
--- /dev/null
+++ b/i7h.js
@@ -0,0 +1,15 @@
+export const i18n = (str) => {
+  if (typeof str !== "string") {
+    throw new Error("Not string");
+  }
+
+  return str.replace(/\w+/g, ellipsis);
+};
+
+const ellipsis = (word) => {
+  if (word.length < 3) {
+    return word;
+  }
+
+  return `${word.slice(0, 1)}${word.length - 2}${word.slice(-1)}`;
+};