Upgrade prettier (kentaro-m#114)

* chore: add pre-commit tool

* fix: format codes

Author: kentaro-m

.husky/.gitignore

@@ -0,0 +1 @@
+_

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npx lint-staged

__tests__/handler.test.ts

@@ -10,7 +10,7 @@ describe('handlePullRequest', () => {
   let context: Context
 
   beforeEach(async () => {
-    context = ({
+    context = {
       eventName: '',
       workflow: '',
       action: '',
@@ -44,7 +44,7 @@ describe('handlePullRequest', () => {
       },
       sha: '',
       ref: '',
-    } as unknown) as Context
+    } as unknown as Context
   })
 
   test('responds with an error if the webhook payload is not exist', async () => {

__tests__/run.test.ts

@@ -54,7 +54,7 @@ describe.only('run', () => {
   })
 
   test('succeeds the process', async () => {
-    coreMocked.getInput.mockImplementation(name => {
+    coreMocked.getInput.mockImplementation((name) => {
       switch (name) {
         case 'repo-token':
           return 'token'