♻️ refactor: extract truncate and extractTextFromParts to utils module

Move utility functions to dedicated src/utils.ts module for better
code organization and reusability across the codebase.

Closes: warpdotdev#10

Author: xiaogaozi

src/index.ts

@@ -1,27 +1,14 @@
 import type { Plugin } from "@opencode-ai/plugin"
-import type { Event, Part, Permission } from "@opencode-ai/sdk"
+import type { Event, Permission } from "@opencode-ai/sdk"
 
 import { buildPayload } from "./payload"
 import { warpNotify } from "./notify"
+import { truncate, extractTextFromParts } from "./utils"
 import pkg from "../package.json" with { type: "json" }
 
 const PLUGIN_VERSION = pkg.version
 const NOTIFICATION_TITLE = "warp://cli-agent"
 
-export function truncate(str: string, maxLen: number): string {
-  if (str.length <= maxLen) return str
-  return str.slice(0, maxLen - 3) + "..."
-}
-
-export function extractTextFromParts(parts: Part[]): string {
-  return parts
-    .filter((p): p is Part & { type: "text"; text: string } =>
-      p.type === "text" && "text" in p && Boolean(p.text),
-    )
-    .map((p) => p.text)
-    .join(" ")
-}
-
 function sendPermissionNotification(perm: Permission, cwd: string): void {
   const sessionId = perm.sessionID
   const toolName = perm.type || "unknown"

src/utils.ts

@@ -0,0 +1,15 @@
+import type { Part } from "@opencode-ai/sdk"
+
+export function truncate(str: string, maxLen: number): string {
+  if (str.length <= maxLen) return str
+  return str.slice(0, maxLen - 3) + "..."
+}
+
+export function extractTextFromParts(parts: Part[]): string {
+  return parts
+    .filter((p): p is Part & { type: "text"; text: string } =>
+      p.type === "text" && "text" in p && Boolean(p.text),
+    )
+    .map((p) => p.text)
+    .join(" ")
+}

tests/index.test.ts

@@ -1,6 +1,6 @@
 import { describe, it } from "node:test"
 import assert from "node:assert/strict"
-import { truncate, extractTextFromParts } from "../src/index"
+import { truncate, extractTextFromParts } from "../src/utils"
 import { buildPayload } from "../src/payload"
 
 describe("truncate", () => {