1 files changed, 14 insertions, 0 deletions
diff --git a/src/chord.ts b/src/chord.ts
new file mode 100644
index 0000000..b2645e2
--- /dev/null
+++ b/src/chord.ts
@@ -0,0 +1,14 @@
+export type Options = {
+  major: boolean,
+  minor: boolean
+}
+
+export function generate({ major, minor }: Options): string {
+  let choices: string[] = []
+  if (major) choices = choices.concat(all)
+  if (minor) choices = choices.concat(all.map(chord => `${chord}m`))
+
+  return choices[Math.floor(Math.random() * choices.length)]
+}
+
+const all: string[] = [ 'C', 'D♭', 'D', 'E♭', 'E', 'F', 'G♭', 'G', 'A♭', 'A', 'B♭', 'B' ]