keeping track of return types mid-sort

src/routes/quick/+page.svelte

@@ -40,6 +40,22 @@
 	/** @type {Job[]} */
 	let queue = [];
 
+	/** Response type for the quicksort algorithm */
+	class Response {
+		/**
+		 * @param {boolean} done
+		 * @param {number|null} index
+		 * @param {number|null} start
+		 * @param {number|null} end
+		 */
+		constructor(done, index, start, end) {
+			this.done = done;
+			this.index = index;
+			this.start = start;
+			this.end = end;
+		}
+	}
+
 	/** Represent a call to the quicksort algorithm. */
 	class Job {
 		/**
@@ -56,6 +72,10 @@
 			this.index = start;
 			this.compr = start;
 		}
+
+		/**
+		 * @returns {Response|void}
+		 */
 		step() {
 			if (this.start >= this.end - 1 || this.start < 0) return new Response(true, null, null, null);
 
@@ -64,6 +84,8 @@
 					this.array[this.end - 1],
 					this.array[this.index]
 				];
+
+				return new Response(false, this.index, this.start, this.end);
 			}
 
 			if (this.array[this.compr] <= this.pivot) {