iter-fun - npm Package Compare versions

Comparing version 0.1.1 to 0.1.2

index.js

@@ -56,2 +56,14 @@ function addSymbolIterator(obj) {
 
+function isIterator(data) {
+  try {
+    return (
+      Symbol.iterator in data &&
+      typeof data.next === "function" &&
+      data.propertyIsEnumerable("next") === false
+    );
+  } catch {
+    return false;
+  }
+}
+
 function getIterator(data) {
@@ -75,3 +87,5 @@ const iter = data["@@iterator"];
 function getOrCreateIterator(data) {
-  if (hasSymbolIterator(data)) {
+  if (isIterator(data)) {
+    return data;
+  } else if (hasSymbolIterator(data)) {
     return data[Symbol.iterator]();
@@ -93,2 +107,3 @@ } else if (hasNext(data)) {
     addSymbolIteratorFallback,
+    isIterator,
     isArray,
@@ -95,0 +110,0 @@ hasNext,

package.json

 {
   "name": "iter-fun",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Fun with Iterables",
@@ -5,0 +5,0 @@ "main": "index.js",

README.md

@@ -19,2 +19,5 @@ # iter-fun
 
+import { isIterator } from "iter-fun";
+isIterator([1, 2, 3][Symbol.iterator]()); // true
+
 import { hasNext } from "iter-fun";
@@ -21,0 +24,0 @@ hasNext({ next: () => {...} }); // true

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Improved metrics

Total package byte prevSize

11539

increased by3.34%

Lines of code

104

increased by15.56%

Number of lines in readme file

58

increased by5.45%

No dependency changes