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node_modules/ramda/es/scan.js

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+import _curry3 from "./internal/_curry3.js";
+/**
+ * Scan is similar to [`reduce`](#reduce), but returns a list of successively
+ * reduced values from the left
+ *
+ * @func
+ * @memberOf R
+ * @since v0.10.0
+ * @category List
+ * @sig ((a, b) -> a) -> a -> [b] -> [a]
+ * @param {Function} fn The iterator function. Receives two values, the accumulator and the
+ *        current element from the array
+ * @param {*} acc The accumulator value.
+ * @param {Array} list The list to iterate over.
+ * @return {Array} A list of all intermediately reduced values.
+ * @see R.reduce, R.mapAccum
+ * @example
+ *
+ *      const numbers = [1, 2, 3, 4];
+ *      const factorials = R.scan(R.multiply, 1, numbers); //=> [1, 1, 2, 6, 24]
+ * @symb R.scan(f, a, [b, c]) = [a, f(a, b), f(f(a, b), c)]
+ */
+
+var scan =
+/*#__PURE__*/
+_curry3(function scan(fn, acc, list) {
+  var idx = 0;
+  var len = list.length;
+  var result = [acc];
+
+  while (idx < len) {
+    acc = fn(acc, list[idx]);
+    result[idx + 1] = acc;
+    idx += 1;
+  }
+
+  return result;
+});
+
+export default scan;