jason810496 commented on code in PR #74069:
URL: https://github.com/apache/airflow/pull/74069#discussion_r4164086613
##########
airflow-core/docs/authoring-and-scheduling/language-sdks/typescript.rst:
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@@ -359,6 +359,34 @@ there. Set it once on the Dag and each task inherits it:
``queue`` on a task wins over the Dag's. See
:ref:`typescript-sdk/coordinator-config` for the
``queue_to_coordinator`` entry that sends that queue to the coordinator.
+Conditional branching
+~~~~~~~~~~~~~~~~~~~~~
+
+``dag.if`` takes a handler that returns a boolean, and names the task each
outcome runs:
+
+.. code-block:: typescript
+
+ async function hasRows({ rows }: { rows: number }): Promise<boolean> {
+ return rows > 0;
+ }
+
+ const gate = dag.if(hasRows)({ rows: extracted });
Review Comment:
Would it be possible to make the interface like:
```ts
dag.if(fn, opts...).then()
```
So that the following shape can work
```ts
dag.If(hasRows, { rows: extracted })).then(...)
// or explicitly set the task_id
dag.If(hasRows, "has_rows", { rows: extracted })).then(...)
```
Not sure would this be more straightforward?
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