api.helix.channels.startChannelCommercial should be a POST and the method is not defined in the request

[MikeMayer]

Hey there-

The helix API startChannelCommercial won't work because the method is defaulting to GET. It [should be a POST].(https://dev.twitch.tv/docs/api/reference#start-commercial). I've also temporarily modified my local copy of the library to include the method parameter in this call.

As seen here: https://github.com/d-fischer/twitch/blob/7721e45cfce2498dc93ac5b914a25c6e9bbf261e/packages/twitch/src/API/Helix/Channel/HelixChannelApi.ts#L90

At the time of issue creation

async startChannelCommercial(broadcaster: UserIdResolvable, length: CommercialLength): Promise<void> {
		await this._client.callApi({
			type: TwitchApiCallType.Helix,
			url: 'channels/commercial',
			scope: 'channel:edit:commercial',
			jsonBody: {
				broadcaster_id: extractUserId(broadcaster),
				length: length
			}
		});
	}

We can easily resolve this by just including the method parameter as well as POST.

Fix

async startChannelCommercial(broadcaster: UserIdResolvable, length: CommercialLength): Promise<void> {
		await this._client.callApi({
			type: TwitchApiCallType.Helix,
			url: 'channels/commercial',
                        method: 'POST',
			scope: 'channel:edit:commercial',
			jsonBody: {
				broadcaster_id: extractUserId(broadcaster),
				length: length
			}
		});
	}

[d-fischer]

Fixed in 0fee74d but forgot the "closes" statement. Also released with 4.4.12. Thanks for reporting!