Initial commit

range.js

@@ -0,0 +1,51 @@
+export function *rangeGenerator(max) {
+    for (let i = 0; i < max; i++) {
+        yield i;
+    }
+}
+
+function rangeObjectPropertyNext() {
+    if (this.value < this.max) {
+        return {
+            value: this.value++
+        }
+    }
+    return {
+        done: true
+    }
+}
+
+function rangeObjectPropertyIterator() {
+    return {
+        value: 0,
+        max: this.max,
+        next: rangeObjectPropertyNext
+    };
+}
+
+export function rangeObjectProperty(max) {
+    return {
+        max,
+        [Symbol.iterator]: rangeObjectPropertyIterator
+    };
+}
+
+export function rangeClosure(max) {
+    let value = 0;
+    return {
+        [Symbol.iterator]() {
+            return {
+                next() {
+                    if (value < max) {
+                        return {
+                            value: value++
+                        };
+                    }
+                    return {
+                        done: true
+                    };
+                }
+            };
+        }
+    };
+}