added a test and updated the error message

uuid/v1.ts

@@ -137,7 +137,7 @@ export function generate(
   }
 
   if (node.length < 6) {
-    throw new Error("Uuid node needs to have at least 6 numbers");
+    throw new Error("Can't create a uuid with a node of less than 6 numbers");
   }
 
   _lastMSecs = msecs;

uuid/v1_test.ts

@@ -59,6 +59,24 @@ Deno.test("generate() can fill the UUID into a buffer", () => {
   assertEquals(buf, uuid);
 });
 
+Deno.test("generate() throws when node is passed with less than 6 numbers", () => {
+  const buf: number[] = [];
+  const v1options = {
+    node: [0x01, 0x23, 0x45, 0x67, 0x89],
+    clockseq: 0x1234,
+    msecs: new Date("2011-11-01").getTime(),
+    nsecs: 5678,
+  };
+
+  assertThrows(
+    () => {
+      generate(v1options, buf, 0);
+    },
+    Error,
+    "Can't create a uuid with a node of less than 6 numbers",
+  );
+});
+
 Deno.test("generate() throws when create more than 10M uuids/sec", () => {
   assertThrows(
     () => {