How to ACK a command without responding?

[isiah-lloyd]

If you don't respond to an slash command interaction, Discord will show the user that the command failed. In the Discord docs, they state that there is a PONG interaction callback type. [https://discord.com/developers/docs/interactions/receiving-and-responding#interaction-response-object-interaction-callback-type]. Could this be implemented so we can use commands without having to use .reply()?

[almostSouji]

There is no "acknowledge without action" (anymore). If the user interacts with a bot (by pressing a button, using a dropdown, etc.) they generally expect something to happen, be that an update of the message the button is on, or an (ephemeral) reply.

The PONG interaction callback is for PING payloads that discord sends to interaction-only webhook applications. This is detailed in the documentation for this type of receiving interactions.: https://discord.com/developers/docs/interactions/receiving-and-responding#receiving-an-interaction

These steps are only necessary for webhook-based Interactions. It is not required for receiving them over the gateway.

Your endpoint must be prepared to ACK a PING message
Your endpoint must be set up to properly handle signature headers--more on that in Security and Authorization

Discord.js only supports receiving interactions through gateway events (which is mutually exclusive with the above-mentioned webhook callbacks).