Don't fail if package.json doesn't exist

CHANGELOG.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 1.1.3
+
+* Don't fail if `package.json` doesn't exist
+
 ## 1.1.2
 
 * Add debug message

src/runner/__tests__/index.ts

@@ -187,4 +187,9 @@ describe('run', () => {
     })
     expect(status).toBe(0)
   })
+
+  it("should not throw if there's no package.json", async () => {
+    const dir = tempy.directory()
+    await index(['', getScriptPath(dir), 'pre-push'])
+  })
 })

src/runner/index.ts

@@ -17,7 +17,16 @@ export default async function run(
   getStdinFn: () => Promise<string> = getStdin // Used for mocking
 ): Promise<number> {
   const cwd = path.resolve(scriptPath.split('node_modules')[0])
-  const pkg = readPkg.sync({ cwd, normalize: false })
+  // In some cases, package.json may not exist
+  // For example, when switching to gh-page branch
+  let pkg
+  try {
+    pkg = readPkg.sync({ cwd, normalize: false })
+  } catch (err) {
+    if (err.code !== 'ENOENT') {
+      throw err
+    }
+  }
   const config = getConf(cwd)
 
   const command: string | undefined =
@@ -26,6 +35,7 @@ export default async function run(
   const oldCommand: string | undefined =
     pkg && pkg.scripts && pkg.scripts[hookName.replace('-', '')]
 
+  // Run command
   try {
     const env: IEnv = {}