# @octokit/webhooks > GitHub webhook events toolset for Node.js [![@latest](https://img.shields.io/npm/v/@octokit/webhooks.svg)](https://www.npmjs.com/package/@octokit/webhooks) [![Test](https://github.com/octokit/webhooks.js/workflows/Test/badge.svg)](https://github.com/octokit/webhooks.js/actions?query=workflow) - [Usage](#usage) - [Local development](#local-development) - [API](#api) - [Constructor](#constructor) - [webhooks.sign()](#webhookssign) - [webhooks.verify()](#webhooksverify) - [webhooks.verifyAndReceive()](#webhooksverifyandreceive) - [webhooks.receive()](#webhooksreceive) - [webhooks.on()](#webhookson) - [webhooks.onAny()](#webhooksonany) - [webhooks.onError()](#webhooksonerror) - [webhooks.removeListener()](#webhooksremovelistener) - [createNodeMiddleware()](#createnodemiddleware) - [Webhook events](#webhook-events) - [emitterEventNames](#emittereventnames) - [validateEventName](#validateeventname) - [TypeScript](#typescript) - [`EmitterWebhookEventName`](#emitterwebhookeventname) - [`EmitterWebhookEvent`](#emitterwebhookevent) - [License](#license) `@octokit/webhooks` helps to handle webhook events received from GitHub. [GitHub webhooks](https://docs.github.com/webhooks/) can be registered in multiple ways 1. In repository or organization settings on [github.com](https://github.com/). 2. Using the REST API for [repositories](https://docs.github.com/rest/reference/repos#webhooks) or [organizations](https://docs.github.com/rest/reference/orgs#webhooks/) 3. By [creating a GitHub App](https://docs.github.com/developers/apps/creating-a-github-app). Note that while setting a secret is optional on GitHub, it is required to be set in order to use `@octokit/webhooks`. Content Type must be set to `application/json`, `application/x-www-form-urlencoded` is not supported. ## Usage ```js // install with: npm install @octokit/webhooks import { Webhooks, createNodeMiddleware } from "@octokit/webhooks"; import { createServer } from "node:http"; const webhooks = new Webhooks({ secret: "mysecret", }); webhooks.onAny(({ id, name, payload }) => { console.log(name, "event received"); }); createServer(createNodeMiddleware(webhooks)).listen(3000); // can now receive webhook events at /api/github/webhooks ``` ## Local development You can receive webhooks on your local machine or even browser using [EventSource](https://developer.mozilla.org/en-US/docs/Web/API/EventSource) and [smee.io](https://smee.io/). Go to [smee.io](https://smee.io/) and Start a new channel. Then copy the "Webhook Proxy URL" and 1. enter it in the GitHub App’s "Webhook URL" input 2. pass it to the [EventSource](https://github.com/EventSource/eventsource) constructor, see below ```js const webhookProxyUrl = "https://smee.io/IrqK0nopGAOc847"; // replace with your own Webhook Proxy URL const source = new EventSource(webhookProxyUrl); source.onmessage = (event) => { const webhookEvent = JSON.parse(event.data); webhooks .verifyAndReceive({ id: webhookEvent["x-request-id"], name: webhookEvent["x-github-event"], signature: webhookEvent["x-hub-signature"], payload: JSON.stringify(webhookEvent.body), }) .catch(console.error); }; ``` `EventSource` is a native browser API and can be polyfilled for browsers that don’t support it. In node, you can use the [`eventsource`](https://github.com/EventSource/eventsource) package: install with `npm install eventsource`, then `import EventSource from "eventsource";)` ## API 1. [Constructor](#constructor) 1. [webhooks.sign()](#webhookssign) 1. [webhooks.verify()](#webhooksverify) 1. [webhooks.verifyAndReceive()](#webhooksverifyandreceive) 1. [webhooks.receive()](#webhooksreceive) 1. [webhooks.on()](#webhookson) 1. [webhooks.onAny()](#webhooksonany) 1. [webhooks.onError()](#webhooksonerror) 1. [webhooks.removeListener()](#webhooksremovelistener) 1. [createNodeMiddleware()](#createnodemiddleware) 1. [createWebMiddleware()](#createwebmiddleware) 1. [Webhook events](#webhook-events) 1. [emitterEventNames](#emittereventnames) 1. [validateEventName](#validateeventname) ### Constructor ```js new Webhooks({ secret /*, transform */ }); ```
secret (String) Required. Secret as configured in GitHub Settings.
transform (Function) Only relevant for webhooks.on. Transform emitted event before calling handlers. Can be asynchronous.
log object Used for internal logging. Defaults to [`console`](https://developer.mozilla.org/en-US/docs/Web/API/console) with `debug` and `info` doing nothing.
Returns the `webhooks` API. ### webhooks.sign() ```js webhooks.sign(eventPayload); ```
eventPayload (String) Required. Webhook request payload as received from GitHub
Returns a `signature` string. Throws error if `eventPayload` is not passed. The `sign` method can be imported as static method from [`@octokit/webhooks-methods`](https://github.com/octokit/webhooks-methods.js/#readme). ### webhooks.verify() ```js webhooks.verify(eventPayload, signature); ```
eventPayload (String) Required. Webhook event request payload as received from GitHub.
signature (String) Required. Signature string as calculated by webhooks.sign().
Returns `true` or `false`. Throws error if `eventPayload` or `signature` not passed. The `verify` method can be imported as static method from [`@octokit/webhooks-methods`](https://github.com/octokit/webhooks-methods.js/#readme). ### webhooks.verifyAndReceive() ```js webhooks.verifyAndReceive({ id, name, payload, signature }); ```
id String Unique webhook event request id
name String Required. Name of the event. (Event names are set as X-GitHub-Event header in the webhook event request.)
payload String Required. Webhook event request payload as received from GitHub.
signature (String) Required. Signature string as calculated by webhooks.sign().
Returns a promise. Verifies event using [webhooks.verify()](#webhooksverify), then handles the event using [webhooks.receive()](#webhooksreceive). Additionally, if verification fails, rejects the returned promise and emits an `error` event. Example ```js import { Webhooks } from "@octokit/webhooks"; const webhooks = new Webhooks({ secret: "mysecret", }); eventHandler.on("error", handleSignatureVerificationError); // put this inside your webhooks route handler eventHandler .verifyAndReceive({ id: request.headers["x-github-delivery"], name: request.headers["x-github-event"], payload: request.body, signature: request.headers["x-hub-signature-256"], }) .catch(handleErrorsFromHooks); ``` ### webhooks.receive() ```js webhooks.receive({ id, name, payload }); ```
id String Unique webhook event request id
name String Required. Name of the event. (Event names are set as X-GitHub-Event header in the webhook event request.)
payload Object Required. Webhook event request payload as received from GitHub.
Returns a promise. Runs all handlers set with [`webhooks.on()`](#webhookson) in parallel and waits for them to finish. If one of the handlers rejects or throws an error, then `webhooks.receive()` rejects. The returned error has an `.errors` property which holds an array of all errors caught from the handlers. If no errors occur, `webhooks.receive()` resolves without passing any value. The `.receive()` method belongs to the `event-handler` module which can be used [standalone](src/event-handler/). ### webhooks.on() ```js webhooks.on(eventName, handler); webhooks.on(eventNames, handler); ```
eventName String Required. Name of the event. One of GitHub's supported event names, or (if the event has an action property) the name of an event followed by its action in the form of <event>.<action>.
eventNames Array Required. Array of event names.
handler Function Required. Method to be run each time the event with the passed name is received. the handler function can be an async function, throw an error or return a Promise. The handler is called with an event object: {id, name, payload}.
The `.on()` method belongs to the `event-handler` module which can be used [standalone](src/event-handler/). ### webhooks.onAny() ```js webhooks.onAny(handler); ```
handler Function Required. Method to be run each time any event is received. the handler function can be an async function, throw an error or return a Promise. The handler is called with an event object: {id, name, payload}.
The `.onAny()` method belongs to the `event-handler` module which can be used [standalone](src/event-handler/). ### webhooks.onError() ```js webhooks.onError(handler); ``` If a webhook event handler throws an error or returns a promise that rejects, an error event is triggered. You can use this handler for logging or reporting events. The passed error object has a .event property which has all information on the event. Asynchronous `error` event handler are not blocking the `.receive()` method from completing.
handler Function Required. Method to be run each time a webhook event handler throws an error or returns a promise that rejects. The handler function can be an async function, return a Promise. The handler is called with an error object that has a .event property which has all the information on the event: {id, name, payload}.
The `.onError()` method belongs to the `event-handler` module which can be used [standalone](src/event-handler/). ### webhooks.removeListener() ```js webhooks.removeListener(eventName, handler); webhooks.removeListener(eventNames, handler); ```
eventName String Required. Name of the event. One of GitHub's supported event names, or (if the event has an action property) the name of an event followed by its action in the form of <event>.<action>, or '*' for the onAny() method or 'error' for the onError() method.
eventNames Array Required. Array of event names.
handler Function Required. Method which was previously passed to webhooks.on(). If the same handler was registered multiple times for the same event, only the most recent handler gets removed.
The `.removeListener()` method belongs to the `event-handler` module which can be used [standalone](src/event-handler/). ### createNodeMiddleware() ```js import { createServer } from "node:http"; import { Webhooks, createNodeMiddleware } from "@octokit/webhooks"; const webhooks = new Webhooks({ secret: "mysecret", }); const middleware = createNodeMiddleware(webhooks, { path: "/webhooks" }); createServer(async (req, res) => { // `middleware` returns `false` when `req` is unhandled (beyond `/webhooks`) if (await middleware(req, res)) return; res.writeHead(404); res.end(); }).listen(3000); // can now receive user authorization callbacks at POST /webhooks ``` The middleware returned from `createNodeMiddleware` can also serve as an `Express.js` middleware directly.
webhooks Webhooks instance Required.
path string Custom path to match requests against. Defaults to /api/github/webhooks.
log object Used for internal logging. Defaults to [`console`](https://developer.mozilla.org/en-US/docs/Web/API/console) with `debug` and `info` doing nothing.
### createWebMiddleware() ```js import { Webhooks, createWebMiddleware } from "@octokit/webhooks"; const webhooks = new Webhooks({ secret: "mysecret", }); const middleware = createWebMiddleware(webhooks, { path: "/webhooks" }); // Example usage in Deno Deno.serve({ port: 3000 }, middleware); ``` The middleware returned from `createWebMiddleware` can also be used in serverless environments like AWS Lambda, Cloudflare Workers, and Vercel.
webhooks Webhooks instance Required.
path string Custom path to match requests against. Defaults to /api/github/webhooks.
log object Used for internal logging. Defaults to [`console`](https://developer.mozilla.org/en-US/docs/Web/API/console) with `debug` and `info` doing nothing.
### Webhook events See the full list of [event types with example payloads](https://docs.github.com/developers/webhooks-and-events/webhook-events-and-payloads/). If there are actions for a webhook, events are emitted for both, the webhook name as well as a combination of the webhook name and the action, e.g. `installation` and `installation.created`. | Event | Actions | | ------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | [`branch_protection_configuration`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#branch_protection_configuration) | `disabled`
`enabled` | | [`branch_protection_rule`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#branch_protection_rule) | `created`
`deleted`
`edited` | | [`check_run`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#check_run) | `completed`
`created`
`requested_action`
`rerequested` | | [`check_suite`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#check_suite) | `completed`
`requested`
`rerequested` | | [`code_scanning_alert`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#code_scanning_alert) | `appeared_in_branch`
`closed_by_user`
`created`
`fixed`
`reopened`
`reopened_by_user` | | [`commit_comment`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#commit_comment) | `created` | | [`create`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#create) | | | [`custom_property`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#custom_property) | `created`
`deleted`
`promote_to_enterprise`
`updated` | | [`custom_property_values`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#custom_property_values) | `updated` | | [`delete`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#delete) | | | [`dependabot_alert`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#dependabot_alert) | `auto_dismissed`
`auto_reopened`
`created`
`dismissed`
`fixed`
`reintroduced`
`reopened` | | [`deploy_key`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#deploy_key) | `created`
`deleted` | | [`deployment`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#deployment) | `created` | | [`deployment_protection_rule`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#deployment_protection_rule) | `requested` | | [`deployment_review`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#deployment_review) | `approved`
`rejected`
`requested` | | [`deployment_status`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#deployment_status) | `created` | | [`discussion`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#discussion) | `answered`
`category_changed`
`closed`
`created`
`deleted`
`edited`
`labeled`
`locked`
`pinned`
`reopened`
`transferred`
`unanswered`
`unlabeled`
`unlocked`
`unpinned` | | [`discussion_comment`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#discussion_comment) | `created`
`deleted`
`edited` | | [`fork`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#fork) | | | [`github_app_authorization`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#github_app_authorization) | `revoked` | | [`gollum`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#gollum) | | | [`installation`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#installation) | `created`
`deleted`
`new_permissions_accepted`
`suspend`
`unsuspend` | | [`installation_repositories`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#installation_repositories) | `added`
`removed` | | [`installation_target`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#installation_target) | `renamed` | | [`issue_comment`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#issue_comment) | `created`
`deleted`
`edited` | | [`issue_dependencies`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#issue_dependencies) | `blocked_by_added`
`blocked_by_removed`
`blocking_added`
`blocking_removed` | | [`issues`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#issues) | `assigned`
`closed`
`deleted`
`demilestoned`
`edited`
`labeled`
`locked`
`milestoned`
`opened`
`pinned`
`reopened`
`transferred`
`typed`
`unassigned`
`unlabeled`
`unlocked`
`unpinned`
`untyped` | | [`label`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#label) | `created`
`deleted`
`edited` | | [`marketplace_purchase`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#marketplace_purchase) | `cancelled`
`changed`
`pending_change`
`pending_change_cancelled`
`purchased` | | [`member`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#member) | `added`
`edited`
`removed` | | [`membership`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#membership) | `added`
`removed` | | [`merge_group`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#merge_group) | `checks_requested`
`destroyed` | | [`meta`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#meta) | `deleted` | | [`milestone`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#milestone) | `closed`
`created`
`deleted`
`edited`
`opened` | | [`org_block`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#org_block) | `blocked`
`unblocked` | | [`organization`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#organization) | `deleted`
`member_added`
`member_invited`
`member_removed`
`renamed` | | [`package`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#package) | `published`
`updated` | | [`page_build`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#page_build) | | | [`personal_access_token_request`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#personal_access_token_request) | `approved`
`cancelled`
`created`
`denied` | | [`ping`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#ping) | | | [`project`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#project) | `closed`
`created`
`deleted`
`edited`
`reopened` | | [`project_card`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#project_card) | `converted`
`created`
`deleted`
`edited`
`moved` | | [`project_column`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#project_column) | `created`
`deleted`
`edited`
`moved` | | [`projects_v2`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#projects_v2) | `closed`
`created`
`deleted`
`edited`
`reopened` | | [`projects_v2_item`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#projects_v2_item) | `archived`
`converted`
`created`
`deleted`
`edited`
`reordered`
`restored` | | [`projects_v2_status_update`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#projects_v2_status_update) | `created`
`deleted`
`edited` | | [`public`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#public) | | | [`pull_request`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#pull_request) | `assigned`
`auto_merge_disabled`
`auto_merge_enabled`
`closed`
`converted_to_draft`
`demilestoned`
`dequeued`
`edited`
`enqueued`
`labeled`
`locked`
`milestoned`
`opened`
`ready_for_review`
`reopened`
`review_request_removed`
`review_requested`
`synchronize`
`unassigned`
`unlabeled`
`unlocked` | | [`pull_request_review`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#pull_request_review) | `dismissed`
`edited`
`submitted` | | [`pull_request_review_comment`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#pull_request_review_comment) | `created`
`deleted`
`edited` | | [`pull_request_review_thread`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#pull_request_review_thread) | `resolved`
`unresolved` | | [`push`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#push) | | | [`registry_package`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#registry_package) | `published`
`updated` | | [`release`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#release) | `created`
`deleted`
`edited`
`prereleased`
`published`
`released`
`unpublished` | | [`repository`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#repository) | `archived`
`created`
`deleted`
`edited`
`privatized`
`publicized`
`renamed`
`transferred`
`unarchived` | | [`repository_advisory`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#repository_advisory) | `published`
`reported` | | [`repository_dispatch`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#repository_dispatch) | `sample` | | [`repository_import`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#repository_import) | | | [`repository_ruleset`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#repository_ruleset) | `created`
`deleted`
`edited` | | [`repository_vulnerability_alert`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#repository_vulnerability_alert) | `create`
`dismiss`
`reopen`
`resolve` | | [`secret_scanning_alert`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#secret_scanning_alert) | `assigned`
`created`
`publicly_leaked`
`reopened`
`resolved`
`unassigned`
`validated` | | [`secret_scanning_alert_location`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#secret_scanning_alert_location) | `created` | | [`secret_scanning_scan`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#secret_scanning_scan) | `completed` | | [`security_advisory`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#security_advisory) | `published`
`updated`
`withdrawn` | | [`security_and_analysis`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#security_and_analysis) | | | [`sponsorship`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#sponsorship) | `cancelled`
`created`
`edited`
`pending_cancellation`
`pending_tier_change`
`tier_changed` | | [`star`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#star) | `created`
`deleted` | | [`status`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#status) | | | [`sub_issues`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#sub_issues) | `parent_issue_added`
`parent_issue_removed`
`sub_issue_added`
`sub_issue_removed` | | [`team`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#team) | `added_to_repository`
`created`
`deleted`
`edited`
`removed_from_repository` | | [`team_add`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#team_add) | | | [`watch`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#watch) | `started` | | [`workflow_dispatch`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#workflow_dispatch) | | | [`workflow_job`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#workflow_job) | `completed`
`in_progress`
`queued`
`waiting` | | [`workflow_run`](https://docs.github.com/en/webhooks/webhook-events-and-payloads#workflow_run) | `completed`
`in_progress`
`requested` | ### emitterEventNames A read only tuple containing all the possible combinations of the webhook events + actions listed above. This might be useful in GUI and input validation. ```js import { emitterEventNames } from "@octokit/webhooks"; emitterEventNames; // ["check_run", "check_run.completed", ...] ``` ### validateEventName The function `validateEventName` asserts that the provided event name is a valid event name or event/action combination. It throws an error if the event name is not valid, or '\*' or 'error' is passed. The second parameter is an optional options object that can be used to customize the behavior of the validation. You can set a `onUnknownEventName` property to `"warn"` to log a warning instead of throwing an error, and a `log` property to provide a custom logger object, which should have a `"warn"` method. You can also set `onUnknownEventName` to `"ignore"` to disable logging or throwing an error for unknown event names. ```ts import { validateEventName } from "@octokit/webhooks"; validateEventName("push"); // no error validateEventName("invalid_event"); // throws an error validateEventName("*"); // throws an error validateEventName("error"); // throws an error validateEventName("invalid_event", { onUnknownEventName: "warn" }); // logs a warning validateEventName("invalid_event", { onUnknownEventName: false, log: { warn: console.info, // instead of warning we just log it via console.info }, }); validateEventName("*", { onUnkownEventName: "ignore" }); // throws an error validateEventName("invalid_event", { onUnkownEventName: "ignore" }); // no error, no warning ``` ## TypeScript The types for the webhook payloads are sourced from [`@octokit/openapi-webhooks-types`](https://github.com/octokit/openapi-webhooks/tree/main/packages/openapi-webhooks-types), which can be used by themselves. In addition to these types, `@octokit/webhooks` exports 2 types specific to itself: Note that changes to the exported types are not considered breaking changes, as the changes will not impact production code, but only fail locally or during CI at build time. > [!IMPORTANT] > As we use [conditional exports](https://nodejs.org/api/packages.html#conditional-exports), you will need to adapt your `tsconfig.json` by setting `"moduleResolution": "node16", "module": "node16"`. > > See the TypeScript docs on [package.json "exports"](https://www.typescriptlang.org/docs/handbook/modules/reference.html#packagejson-exports).
> See this [helpful guide on transitioning to ESM](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c) from [@sindresorhus](https://github.com/sindresorhus) **⚠️ Caution ⚠️**: Webhooks Types are expected to be used with the [`strictNullChecks` option](https://www.typescriptlang.org/tsconfig#strictNullChecks) enabled in your `tsconfig`. If you don't have this option enabled, there's the possibility that you get `never` as the inferred type in some use cases. See [octokit/webhooks#395](https://github.com/octokit/webhooks/issues/395) for details. ### `EmitterWebhookEventName` A union of all possible events and event/action combinations supported by the event emitter, e.g. `"check_run" | "check_run.completed" | ... many more ... | "workflow_run.requested"`. ### `EmitterWebhookEvent` The object that is emitted by `@octokit/webhooks` as an event; made up of an `id`, `name`, and `payload` properties. An optional generic parameter can be passed to narrow the type of the `name` and `payload` properties based on event names or event/action combinations, e.g. `EmitterWebhookEvent<"check_run" | "code_scanning_alert.fixed">`. ## License [MIT](LICENSE.md)