ugate · January 2, 2019 21:34 · Jan 2, 2019
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,24 @@
+  /**
+   * Contitional directive that evaluates each template literal expression for
+   * [truthiness](https://developer.mozilla.org/en-US/docs/Glossary/Truthy). Each expression that evaluates to a _truthy_
+   * value will include the string following the expression in the return value. Any string preceding the first expression
+   * will be included in the result.
+   * @example
+   * truthy`${ it.myValue === 123 }
+   *    <div>
+   *      This will be included in the result when <code>myValue === 123</code>
+   *    </div>
+   * `
+   * @param {String[]} strs The string passed into template literal tag
+   * @param  {String[]} exps The expressions passed into template literal tag
+   * @returns {String} The conditional result
+   */
+  function truthy(strs, ...exps) {
+    var rtn = '';
+    if (exps[0]) {
+      for (let i = 0, sln = strs.length, eln = exps.length, ln = Math.max(sln, eln); i < ln; i++) {
+        rtn += `${strs[i] ? strs[i] : ''}${exps[i] && i !== 0 ? exps[i] : ''}`;
+      }
+    }
+    return rtn;
+  }
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