Add attempt

snippets/attempt.md

@@ -0,0 +1,22 @@
+### attempt
+
+Attempts to invoke a function with the provided arguments, returning either the result or the caught error object.
+
+Use a `try... catch` block to return either the result of the function or an appropriate error.
+
+```js
+const attempt = (fn, ...args) => {
+  try {
+    return fn(args);
+  } catch (e) {
+    return e instanceof Error ? e : new Error(e);
+  }
+};
+```
+
+```js
+var elements = attempt(function(selector) {
+  return document.querySelectorAll(selector);
+}, '>_>');
+if (elements instanceof Error) elements = []; // elements = []
+```