refactor: move formatSize to shared utility

Assisted-by: OpenCode (Claude Sonnet 4)

Author: cgwalters

packages/opencode/src/cli/cmd/uninstall.ts

@@ -3,6 +3,7 @@ import { UI } from "../ui"
 import * as prompts from "@clack/prompts"
 import { Installation } from "../../installation"
 import { Global } from "../../global"
+import { formatSize } from "../../util/format"
 import { $ } from "bun"
 import fs from "fs/promises"
 import path from "path"
@@ -341,13 +342,6 @@ async function getDirectorySize(dir: string): Promise<number> {
   return total
 }
 
-function formatSize(bytes: number): string {
-  if (bytes < 1024) return `${bytes} B`
-  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`
-  if (bytes < 1024 * 1024 * 1024) return `${(bytes / (1024 * 1024)).toFixed(1)} MB`
-  return `${(bytes / (1024 * 1024 * 1024)).toFixed(1)} GB`
-}
-
 function shortenPath(p: string): string {
   const home = os.homedir()
   if (p.startsWith(home)) {

packages/opencode/src/util/format.ts

@@ -1,3 +1,10 @@
+export function formatSize(bytes: number): string {
+  if (bytes < 1024) return `${bytes} B`
+  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`
+  if (bytes < 1024 * 1024 * 1024) return `${(bytes / (1024 * 1024)).toFixed(1)} MB`
+  return `${(bytes / (1024 * 1024 * 1024)).toFixed(1)} GB`
+}
+
 export function formatDuration(secs: number) {
   if (secs <= 0) return ""
   if (secs < 60) return `${secs}s`