feat: kwm v2 key import ui

src/util/splitN.ts

@@ -0,0 +1,20 @@
+export function splitN(str: string, sep: string, maxN: number) {
+  if (maxN <= 1) {
+    return [str];
+  }
+
+  const chunks: string[] = [];
+  const lenSep = sep.length;
+  let searchIdx = 0;
+  for (; maxN > 1; maxN--) {
+    const nextIdx = str.indexOf(sep, searchIdx);
+    if (nextIdx === -1) {
+      break;
+    }
+    chunks.push(str.slice(searchIdx, nextIdx));
+    searchIdx = nextIdx + lenSep;
+  }
+
+  chunks.push(str.slice(searchIdx));
+  return chunks;
+}