initial public release.

src/core/region/KGMidiRegion.ts

@@ -0,0 +1,46 @@
+import { Expose, Type } from 'class-transformer';
+import { KGRegion } from './KGRegion';
+import { KGMidiNote } from '../midi/KGMidiNote';
+
+/**
+ * KGMidiRegion - Class representing a MIDI region in the DAW
+ * Contains MIDI notes and inherits position/length from KGRegion
+ */
+export class KGMidiRegion extends KGRegion {
+  @Expose()
+  protected override __type: string = 'KGMidiRegion';
+  
+  @Expose()
+  @Type(() => KGMidiNote)
+  protected notes: KGMidiNote[] = [];
+
+  constructor(id: string, trackId: string, trackIndex: number, name: string, startFromBeat: number = 0, length: number = 0) {
+    super(id, trackId, trackIndex, name, startFromBeat, length);
+    this.__type = 'KGMidiRegion';
+  }
+
+  // Getter
+  public getNotes(): KGMidiNote[] {
+    return this.notes;
+  }
+
+  // Setter
+  public setNotes(notes: KGMidiNote[]): void {
+    this.notes = notes;
+  }
+
+  // Add a single note
+  public addNote(note: KGMidiNote): void {
+    this.notes.push(note);
+  }
+
+  // Remove a note by ID
+  public removeNote(noteId: string): void {
+    this.notes = this.notes.filter(note => note.getId() !== noteId);
+  }
+
+  // Override getCurrentType to return specific subclass type
+  public override getCurrentType(): string {
+    return 'KGMidiRegion';
+  }
+}