1 files changed, 16 insertions, 0 deletions
diff --git a/cli/js/util.ts b/cli/js/util.ts
index 54230af1f..b046a34f4 100644
--- a/cli/js/util.ts
+++ b/cli/js/util.ts
@@ -248,3 +248,19 @@ export function commonPath(paths: string[], sep = "/"): string {
   const prefix = parts.slice(0, endOfPrefix).join(sep);
   return prefix.endsWith(sep) ? prefix : `${prefix}${sep}`;
 }
+
+/** Utility function to turn the number of bytes into a human readable
+ * unit */
+export function humanFileSize(bytes: number): string {
+  const thresh = 1000;
+  if (Math.abs(bytes) < thresh) {
+    return bytes + " B";
+  }
+  const units = ["kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
+  let u = -1;
+  do {
+    bytes /= thresh;
+    ++u;
+  } while (Math.abs(bytes) >= thresh && u < units.length - 1);
+  return `${bytes.toFixed(1)} ${units[u]}`;
+}