1 files changed, 28 insertions, 0 deletions
diff --git a/src/data/things/additional-file/MidiProjectFile.js b/src/data/things/additional-file/MidiProjectFile.js
new file mode 100644
index 00000000..8e7c19ca
--- /dev/null
+++ b/src/data/things/additional-file/MidiProjectFile.js
@@ -0,0 +1,28 @@
+import {input, V} from '#composite';
+import Thing from '#thing';
+
+import {exposeConstant} from '#composite/control-flow';
+import {contributionList, soupyReverse} from '#composite/wiki-properties';
+
+import {AdditionalFile} from './AdditionalFile.js';
+
+export class MidiProjectFile extends AdditionalFile {
+  static [Thing.wikiData] = 'midiProjectFileData';
+
+  static [Thing.getPropertyDescriptors] = () => ({
+    // Update & expose
+
+    artistContribs: contributionList({
+      artistProperty: input.value('midiProjectFileArtistContributions'),
+    }),
+
+    // Expose only
+
+    isMidiProjectFile: exposeConstant(V(true)),
+  });
+
+  static [Thing.reverseSpecs] = {
+    midiProjectFileArtistContributionsBy:
+      soupyReverse.contributionsBy('midiProjectFileData', 'artistContribs'),
+  };
+}