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hsmusic-wiki - HSMusic - static wiki software cataloguing collaborative creation
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-rw-r--r--src/data/composite/things/flash-act/index.js1
-rw-r--r--src/data/composite/things/flash-act/withFlashSide.js22
2 files changed, 23 insertions, 0 deletions
diff --git a/src/data/composite/things/flash-act/index.js b/src/data/composite/things/flash-act/index.js
new file mode 100644
index 00000000..40fecd2f
--- /dev/null
+++ b/src/data/composite/things/flash-act/index.js
@@ -0,0 +1 @@
+export {default as withFlashSide} from './withFlashSide.js';
diff --git a/src/data/composite/things/flash-act/withFlashSide.js b/src/data/composite/things/flash-act/withFlashSide.js
new file mode 100644
index 00000000..64daa1fb
--- /dev/null
+++ b/src/data/composite/things/flash-act/withFlashSide.js
@@ -0,0 +1,22 @@
+// Gets the flash act's side. This will early exit if flashSideData is missing.
+// If there's no side whose list of flash acts includes this act, the output
+// dependency will be null.
+
+import {input, templateCompositeFrom} from '#composite';
+
+import {withUniqueReferencingThing} from '#composite/wiki-data';
+
+export default templateCompositeFrom({
+  annotation: `withFlashSide`,
+
+  outputs: ['#flashSide'],
+
+  steps: () => [
+    withUniqueReferencingThing({
+      data: 'flashSideData',
+      list: input.value('acts'),
+    }).outputs({
+      ['#uniqueReferencingThing']: '#flashSide',
+    }),
+  ],
+});