Bundle CLI for npm global install compatibility (fixes #3)

Node refuses to type-strip .ts files under node_modules/, so
`pty` failed after `npm install -g`. The CLI entry point is now
bundled to a single bin/cli.js via esbuild during prepublishOnly.

The testing and TUI exports remain .ts — consumers' toolchains
handle those.

Author: myobie

.gitignore

@@ -1,2 +1,3 @@
 node_modules/
+bin/cli.js
 result

bin/pty

@@ -1,10 +1,16 @@
 #!/usr/bin/env node
+import { existsSync } from 'node:fs';
 import { spawnSync } from 'node:child_process';
 import { fileURLToPath } from 'node:url';
 import { dirname, join } from 'node:path';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
-const cli = join(__dirname, '..', 'src', 'cli.ts');
+const cli = join(__dirname, 'cli.js');
+
+if (!existsSync(cli)) {
+  console.error('bin/cli.js not found. Run: npm run build');
+  process.exit(1);
+}
 
 const result = spawnSync(process.execPath, [cli, ...process.argv.slice(2)], {
   stdio: 'inherit',

flake.nix

@@ -29,16 +29,19 @@
 
             # Generated from package-lock.json.
             # Regenerate with: nix run nixpkgs#prefetch-npm-deps -- package-lock.json
-            npmDepsHash = "sha256-rl5s8czRezWu0Fri4xWoMUkazBQfVXfuUf9hvBGw3Qw=";
+            npmDepsHash = "sha256-ZE3elAZKDLlig0Pe6KrGvLO8xlmF+9WqYHl3v0KFfXs=";
 
             # node-pty has native code that needs these at build time
             nativeBuildInputs = with pkgs; [ python3 pkg-config ];
             buildInputs = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isDarwin [
               pkgs.apple-sdk_15
             ];
 
-            # No compile step — Node runs TypeScript directly via type stripping.
-            dontNpmBuild = true;
+            buildPhase = ''
+              runHook preBuild
+              npm run build
+              runHook postBuild
+            '';
 
             # Install outside of node_modules so Node's TypeScript stripping works.
             # (Node refuses to strip types for files under node_modules/)