Ensure package can run via npx

Author: cezaraugusto

cli.test.ts

@@ -0,0 +1,80 @@
+import { describe, afterEach, test, expect, vi } from 'vitest';
+import cli from './src/cli.js';
+
+const originalArgv = process.argv;
+
+function setArgv(args: string[]) {
+  process.argv = ['node', 'go-git-it', ...args];
+}
+
+describe('cli', () => {
+  afterEach(() => {
+    process.argv = originalArgv;
+    vi.restoreAllMocks();
+  });
+
+  test('prints help and exits with code 0', () => {
+    setArgv([]);
+
+    const exitMock = vi
+      .spyOn(process, 'exit')
+      .mockImplementation(((code?: number) => {
+        throw new Error(`process.exit:${code ?? 0}`);
+      }) as never);
+    const logMock = vi.spyOn(console, 'log').mockImplementation(() => {});
+
+    expect(() => cli(async () => {})).toThrow('process.exit:0');
+    expect(exitMock).toHaveBeenCalledWith(0);
+    expect(logMock).toHaveBeenCalled();
+  });
+
+  test('rejects invalid argument counts', () => {
+    setArgv(['one', 'two', 'three']);
+
+    const exitMock = vi
+      .spyOn(process, 'exit')
+      .mockImplementation(((code?: number) => {
+        throw new Error(`process.exit:${code ?? 0}`);
+      }) as never);
+    const errorMock = vi.spyOn(console, 'error').mockImplementation(() => {});
+
+    expect(() => cli(async () => {})).toThrow('process.exit:1');
+    expect(exitMock).toHaveBeenCalledWith(1);
+    expect(errorMock).toHaveBeenCalled();
+  });
+
+  test('invokes goGitIt with provided arguments', async () => {
+    setArgv(['https://github.com/owner/repo', './out']);
+
+    const exitMock = vi.spyOn(process, 'exit');
+    const goGitIt = vi.fn().mockResolvedValue(undefined);
+
+    cli(goGitIt);
+    await Promise.resolve();
+
+    expect(goGitIt).toHaveBeenCalledWith(
+      'https://github.com/owner/repo',
+      './out',
+    );
+    expect(exitMock).not.toHaveBeenCalled();
+  });
+
+  test('prints error and exits on failure', async () => {
+    setArgv(['https://github.com/owner/repo']);
+
+    const exitMock = vi
+      .spyOn(process, 'exit')
+      .mockImplementation((() => undefined) as never);
+    const errorMock = vi.spyOn(console, 'error').mockImplementation(() => {});
+
+    const goGitIt = vi.fn().mockRejectedValue(new Error('boom'));
+
+    cli(goGitIt);
+    await new Promise<void>((resolve) => {
+      setImmediate(resolve);
+    });
+
+    expect(exitMock).toHaveBeenCalledWith(1);
+    expect(errorMock).toHaveBeenCalled();
+  });
+});

package.json

@@ -16,7 +16,7 @@
     }
   },
   "bin": {
-    "go-git-it": "./dist/index.cjs"
+    "go-git-it": "./dist/index.js"
   },
   "main": "./dist/index.cjs",
   "types": "./dist/index.d.ts",