Add createBoundary.browser.ts

Author: octet-stream

lib/util/createBoundary.browser.ts

@@ -0,0 +1,14 @@
+/**
+ * Generates a boundary string of given length.
+ */
+function createBoundary(length: number): string {
+  const octets = new Uint8Array(length)
+
+  crypto.getRandomValues(octets)
+
+  return [...octets]
+    .map<string>(octet => octet.toString(16).padStart(2, "0"))
+    .join("")
+}
+
+export default createBoundary