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Update readme with type assertion information (#310) 

* Update readme with type assertion information

* PR updates
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Thomas Boop 2020-01-22 11:53:39 -05:00 committed by GitHub
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@ -55,3 +55,20 @@ const newIssue = await octokit.issues.create({
body: 'Hello Universe!' body: 'Hello Universe!'
}); });
``` ```
## Webhook payload typescript definitions
The npm module `@octokit/webhooks` provides type definitions for the response payloads. You can cast the payload to these types for better type information.
First, install the npm module `npm install @octokit/webhooks`
Then, assert the type based on the eventName
```ts
import * as core from '@actions/core'
import * as github from '@actions/github'
import * as Webhooks from '@octokit/webhooks'
if (github.context.eventName === 'push') {
const pushPayload = github.context.payload as Webhooks.WebhookPayloadPush
core.info(`The head commit is: ${pushPayload.head}`)
}
```