basic scheduling

repl/src/types.d.ts

@@ -0,0 +1,22 @@
+export declare interface Fraction {
+  (v: number): Fraction;
+  d: number;
+  n: number;
+  s: number;
+  sub: (f: Fraction) => Fraction;
+  sam: () => Fraction;
+}
+export declare interface TimeSpan {
+  constructor: any; //?
+  begin: Fraction;
+  end: Fraction;
+}
+export declare interface Hap<T = any> {
+  whole: TimeSpan;
+  part: TimeSpan;
+  value: T;
+  show: () => string;
+}
+export declare interface Pattern<T = any> {
+  query: (span: TimeSpan) => Hap<T>[];
+}