feat(app): add cli version flag

packages/app/src/main.test.ts

@@ -0,0 +1,34 @@
+import { expect, test } from "bun:test";
+import { parseArgs, runTermDrawAppCli } from "./main";
+
+test("parseArgs accepts --version and -v", () => {
+  expect(parseArgs(["--version"])).toEqual({
+    fenced: false,
+    help: false,
+    version: true,
+  });
+
+  expect(parseArgs(["-v"])).toEqual({
+    fenced: false,
+    help: false,
+    version: true,
+  });
+});
+
+test("runTermDrawAppCli prints the current version", async () => {
+  const stdoutWrites: string[] = [];
+  const originalWrite = process.stdout.write.bind(process.stdout);
+
+  process.stdout.write = ((chunk: string | Uint8Array) => {
+    stdoutWrites.push(typeof chunk === "string" ? chunk : Buffer.from(chunk).toString("utf8"));
+    return true;
+  }) as typeof process.stdout.write;
+
+  try {
+    await runTermDrawAppCli(["--version"]);
+  } finally {
+    process.stdout.write = originalWrite;
+  }
+
+  expect(stdoutWrites.join("")).toBe("0.3.4\n");
+});

packages/app/src/main.tsx

@@ -1,17 +1,20 @@
 import { createCliRenderer } from "@opentui/core";
 import { createRoot } from "@opentui/react";
 import { buildHelpText, formatSavedOutput, TermDrawApp } from "@termdraw/opentui";
+import packageJson from "../package.json";
 
 export interface CliOptions {
   outputPath?: string;
   fenced: boolean;
   help: boolean;
+  version?: boolean;
 }
 
 export function parseArgs(argv: string[]): CliOptions {
   const options: CliOptions = {
     fenced: false,
     help: false,
+    version: false,
   };
 
   for (let i = 0; i < argv.length; i += 1) {
@@ -22,6 +25,11 @@ export function parseArgs(argv: string[]): CliOptions {
       continue;
     }
 
+    if (arg === "-v" || arg === "--version") {
+      options.version = true;
+      continue;
+    }
+
     if (arg === "--fenced") {
       options.fenced = true;
       continue;
@@ -60,6 +68,11 @@ export async function runTermDrawAppCli(argv = Bun.argv.slice(2)): Promise<void>
     return;
   }
 
+  if (options.version) {
+    process.stdout.write(`${packageJson.version}\n`);
+    return;
+  }
+
   const renderer = await createCliRenderer({
     exitOnCtrlC: false,
     useMouse: true,