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Chat: Update typing indicator API documentation #2473

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@splindsay-92 splindsay-92 commented Mar 12, 2025

Description

Updating the typing portion of the docs to reflect the move from presence to ephemeral messaging.

For more context, please see [CHADR-093]

Checklist

Typing is no longer presence-based, the docs have been updated to reflect changes in logic to support this.
- Also added details about the new `change` property in typing events and updated the timeout behavior with `start()` calls and grace periods.
- `typing.get()` is also now synchronous.
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@ably-ci ably-ci temporarily deployed to ably-docs-chat-update-t-q6bfiy March 12, 2025 11:15 Inactive
@splindsay-92 splindsay-92 marked this pull request as ready for review March 14, 2025 14:11
@splindsay-92 splindsay-92 force-pushed the chat/update-typing-docs branch from 04fbca8 to 1eaf703 Compare March 14, 2025 14:33
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@AndyTWF AndyTWF left a comment

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Can you create an integration branch and point this branch at that, thanks :)

@@ -100,7 +107,7 @@ blang[javascript,kotlin].
```[javascript]
// Initial subscription
const { unsubscribe } = room.typing.subscribe((event) => {
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Shall we pop a type hint in here, for explicitness?

```

```[swift]
let currentlyTypingClientIds = try await room.typing.get()
let currentlyTypingClientIds = try room.typing.get()
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Can we leave this one as-is for now, the Swift team can change as they see fit :)


Consequently, if you want to keep the typing indicator active, you should call `start()` with each key press to ensure a new typing event is emitted after the timeout has expired.

For a client receiving typing events, the typing indicator they have received will remain active for the duration of the timeout, plus a predefined grace period of 2000ms. If a new typing event is received for the same user before the grace period has expired, the typing indicator will be reset to the full duration of the timeout. For example, if the timeout is 15000ms, the typing indicator will remain active for 12000ms.
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Should this say "if the timeout is 10000ms"?

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Worth a comment re giving developers the flexibility to balance the number of messages and the responsiveness?

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Sure, will add that in!

There is a timeout associated with start events. A stop event will be automatically emitted after it expires if one isn't received before the timeout. The length of this timeout is customizable using the @timeoutMs@ parameter that can be configured in the @RoomOptions@ that you set when you "create a room":/docs/chat/rooms#create. The default is 10000ms.
There is a timeout associated with start events. On first calling `start()`, this timer is set, subsequent calls to `start()` before the timer expires will result in a no-op. The length of this timeout is customizable using the @heartbeatThrottleMs@ parameter that can be configured in the @RoomOptions@ that you set when you "create a room":/docs/chat/rooms#create. The default is 10000ms.

Consequently, if you want to keep the typing indicator active, you should call `start()` with each key press to ensure a new typing event is emitted after the timeout has expired.
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We could add a line here about how you might achieve it in AI/bot settings?

@AndyTWF AndyTWF changed the base branch from main to integration/chat-single-channel March 17, 2025 15:20
@splindsay-92 splindsay-92 requested a review from AndyTWF March 17, 2025 18:45
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Only a small recommendation. But other than that all good! 👍

@splindsay-92 splindsay-92 requested a review from AndyTWF March 20, 2025 16:56
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4 participants