Implement brak()

packages/core/pattern.mjs

@@ -822,6 +822,16 @@ export class Pattern {
     return slowcatPrime(...pats);
   }
 
+  /**
+   * Returns a new pattern where every other cycle is played once, twice as
+   * fast, and offset in time by one quarter of a cycle. Creates a kind of 
+   * breakbeat feel.
+   * @returns Pattern
+   */
+  brak() {
+    return this.every(2, x => fastcat(x, silence)._late(0.25))
+  }
+
   rev() {
     const pat = this;
     const query = function (state) {

packages/core/test/pattern.test.mjs

@@ -277,10 +277,7 @@ describe('Pattern', function () {
       );
     });
     it('can SqueezeOut() structure', () => {
-      sameFirst(
+      sameFirst(sequence(1, [2, 3]).keepifSqueezeOut(true, true, false), sequence([1, [2, 3]], [1, [2, 3]], silence));
-        sequence(1, [2, 3]).keepifSqueezeOut(true, true, false),
-        sequence([1, [2, 3]], [1, [2, 3]], silence),
-      );
     });
   });
   describe('sub()', function () {
@@ -589,6 +586,14 @@ describe('Pattern', function () {
       );
     });
   });
+  describe('brak()', () => {
+    it('Can make something a bit breakbeaty', () => {
+      sameFirst(
+        sequence('a', 'b').brak()._fast(2),
+        sequence('a', 'b', fastcat(silence, 'a'), fastcat('b', silence))
+      )
+    });
+  });
   describe('timeCat()', function () {
     it('Can concatenate patterns with different relative durations', function () {
       assert.deepStrictEqual(