feat: add "ping" event

index.json

@@ -6288,5 +6288,35 @@
         }
       }
     ]
+  },
+  {
+    "name": "ping",
+    "actions": [],
+    "example": [
+      {
+        "event": "ping",
+        "payload": {
+          "zen": "Design for failure.",
+          "hook_id": 123,
+          "hook": {
+            "type": "App",
+            "id": 123,
+            "name": "web",
+            "active": true,
+            "events": [
+              "pull_request"
+            ],
+            "config": {
+              "content_type": "json",
+              "insecure_ssl": "0",
+              "url": "https://my-app.com/webhook"
+            },
+            "updated_at": "2018-12-11T21:18:31Z",
+            "created_at": "2018-12-11T21:18:31Z",
+            "app_id": 456
+          }
+        }
+      }
+    ]
   }
 ]

lib/check-or-update-webhooks.js

@@ -5,6 +5,7 @@ const { diff, diffString } = require('json-diff')
 
 const createPrOnChange = require('./create-pr-on-change')
 const getHtml = require('./get-html')
+const getPingWebhook = require('./get-ping-webhook')
 const getSections = require('./get-sections')
 const toWebhook = require('./section-to-webhook')
 
@@ -18,6 +19,8 @@ async function checkOrUpdateWebhooks ({ cached, checkOnly }) {
   const sections = await getSections(state, html)
   const wekhooks = sections.map(toWebhook.bind(null, state)).filter(Boolean)
 
+  wekhooks.push(getPingWebhook())
+
   const currentWebhooks = require('../index.json')
 
   if (!diff(currentWebhooks, wekhooks)) {

lib/get-ping-webhook.js

@@ -0,0 +1,34 @@
+module.exports = getPingWebhook
+
+/**
+ * The "ping" webhook is currently not listed on https://developer.github.com/v3/activity/events/types
+ * @see https://github.com/octokit/webhooks/issues/3
+ */
+function getPingWebhook () {
+  return {
+    name: 'ping',
+    actions: [],
+    example: [{
+      event: 'ping',
+      payload: {
+        zen: 'Design for failure.',
+        hook_id: 123,
+        hook: {
+          type: 'App',
+          id: 123,
+          name: 'web',
+          active: true,
+          events: ['pull_request'],
+          config: {
+            content_type: 'json',
+            insecure_ssl: '0',
+            url: 'https://my-app.com/webhook'
+          },
+          updated_at: '2018-12-11T21:18:31Z',
+          created_at: '2018-12-11T21:18:31Z',
+          app_id: 456
+        }
+      }
+    }]
+  }
+}