feat(OAuth2API): add revokeToken method

packages/core/src/api/oauth2.ts

@@ -1,5 +1,6 @@
 /* eslint-disable jsdoc/check-param-names */
 
+import { Buffer } from 'node:buffer';
 import { type RequestData, type REST, makeURLSearchParams } from '@discordjs/rest';
 import {
 	Routes,
@@ -13,6 +14,8 @@ import {
 	type RESTGetAPIOAuth2CurrentApplicationResult,
 	type RESTPostOAuth2AccessTokenURLEncodedData,
 	type RESTPostOAuth2AccessTokenResult,
+	type RESTPostOAuth2TokenRevocation,
+	type Snowflake,
 } from 'discord-api-types/v10';
 
 export class OAuth2API {
@@ -121,4 +124,24 @@ export class OAuth2API {
 			signal,
 		}) as Promise<RESTGetAPIOAuth2CurrentAuthorizationResult>;
 	}
+
+	/**
+	 * Revokes an OAuth2 token
+	 * 
+	 * @see {@link https://discord.com/developers/docs/topics/oauth2#authorization-code-grant-token-revocation-example}
+	 * @param body - The body of the token revocation request
+	 * @param options - The options for the token revocation request
+	 */
+	public async revokeToken(applicationId: Snowflake, applicationSecret: string, body: RESTPostOAuth2TokenRevocation, { signal }: Pick<RequestData, 'signal'> = {}) {
+	 return this.rest.post(Routes.oauth2TokenRevocation(), {
+	  body: makeURLSearchParams(body),
+	  passThroughBody: true,
+	  headers: {
+	   'Content-Type': 'application/x-www-form-urlencoded',
+	   'Authorization': `Basic ${Buffer.from(`${applicationId}:${applicationSecret}`).toString('base64')}`,
+	  },
+	  auth: false,
+	  signal,
+	 }) as Promise<{}>;
+	}
 }