Use Symbol.iterator and spread syntax

tshemsedinov · tshemsedinov · commit bc7b612e1bc7 · 2018-06-17T02:44:45.000+03:00
Refs: https://github.com/HowProgrammingWorks/Dictionary/issues/10
diff --git a/JavaScript/c-iterator.js b/JavaScript/c-iterator.js
@@ -0,0 +1,21 @@
+'use strict';
+
+const text = (s = '', o = {
+  line: a => (s +=  '\n' + a, o),
+  [Symbol.iterator]: () => ({
+    next() {
+      const res = { value: s, done: this.finished };
+      this.finished = true;
+      return res;
+    }
+  })
+}) => o;
+
+// Usage
+
+const txt = text('line1')
+  .line('line2')
+  .line('line3')
+  .line('line4');
+
+console.log(...txt);
