working

packages/core/pattern.mjs

@@ -1456,14 +1456,31 @@ export function cat(...pats) {
  * @return {Pattern}
  * @example
  * arrange(
- *   [4, "<c a f e>(3,8)"],
- *   [2, "<g a>(5,8)"]
+ *   4, "<c a f e>(3,8)",
+ *   2, "<g a>(5,8)"
  * ).note()
  */
-export function arrange(...sections) {
-  const total = sections.reduce((sum, [cycles]) => sum + cycles, 0);
-  sections = sections.map(([cycles, section]) => [cycles, section.fast(cycles)]);
-  return stepcat(...sections).slow(total);
+export function arrange(...input) {
+  let sects = [];
+  if (!Array.isArray(input[0])) {
+    if (input.length % 2 !== 0) {
+      throw new Error('Arrange needs a length paramter and a pattern')
+    }
+    for (let i = 0; i < input.length; i += 2) { 
+      let cycles = input.at(i)
+      let pattern = input.at(i + 1)
+      sects.push([cycles, pattern]);
+    }
+  } else {
+    // Handle deprecated arrange input
+    sects = input;
+  }
+  const total = sects.reduce((sum, [cycles]) => sum + cycles, 0);
+  sects = sects.map(([cycles, section]) => [cycles, section.fast(cycles)]);
+  return stepcat(...sects).slow(total);
+
+
+
 }
 
 /**
@@ -1858,9 +1875,9 @@ export const { fastGap, fastgap } = register(['fastGap', 'fastgap'], function (f
     const newWhole = !hap.whole
       ? undefined
       : new TimeSpan(
-          newPart.begin.sub(begin.sub(hap.whole.begin).div(factor)),
-          newPart.end.add(hap.whole.end.sub(end).div(factor)),
-        );
+        newPart.begin.sub(begin.sub(hap.whole.begin).div(factor)),
+        newPart.end.add(hap.whole.end.sub(end).div(factor)),
+      );
     return new Hap(newWhole, newPart, hap.value, hap.context);
   };
   return pat.withQuerySpanMaybe(qf).withHap(ef).splitQueries();